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Journal articles on the topic 'Non-fullerene acceptor (NFA)'

Author: Grafiati

Published: 2 November 2024

Last updated: 31 July 2025

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1

Jiang, Yuanyuan, and Xiaozhang Zhu. "High-Performance Ternary Organic Solar Cells Enabled by Synergizing Fullerene and Non-fullerene Acceptors." Organic Materials 03, no. 02 (2021): 254–76. http://dx.doi.org/10.1055/a-1472-3989.

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With the development of the non-fullerene acceptors (NFAs), the use of ternary organic photovoltaic devices based on a fullerene acceptor and a NFA is now widespread, and the merits of both acceptor types can be fully utilized. However, the effective approach of enhancing device performance is adjusting the charge dynamics and the thin-film morphology of the active layer via introducing the second acceptor, which would significantly impact the open-circuit voltage, the short-circuit current, and the fill factor, thus strongly affecting device efficiency. The functions of the second acceptor in

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2

Im, Chan, Sang-Woong Kang, Jeong-Yoon Choi, and Jongdeok An. "Comparing Donor- and Acceptor-Originated Exciton Dynamics in Non-Fullerene Acceptor Blend Polymeric Systems." Polymers 13, no. 11 (2021): 1770. http://dx.doi.org/10.3390/polym13111770.

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Non-fullerene type acceptors (NFA) have gained attention owing to their spectral extension that enables efficient solar energy capturing. For instance, the solely NFA-mediated absorbing region contributes to the photovoltaic power conversion efficiency (PCE) as high as ~30%, in the case of the solar cells comprised of fluorinated materials, PBDB-T-2F and ITIC-4F. This implies that NFAs must be able to serve as electron donors, even though they are conventionally assigned as electron acceptors. Therefore, the pathways of NFA-originated excitons need to be explored by the spectrally resolved pho

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3

Hasenburg, Franziska H., Kun-Han Lin, Bas van der Zee, Paul W. M. Blom, Denis Andrienko, and Gert-Jan A. H. Wetzelaer. "Ambipolar charge transport in a non-fullerene acceptor." APL Materials 11, no. 2 (2023): 021105. http://dx.doi.org/10.1063/5.0137073.

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Charge transport is one of the key factors in the operation of organic solar cells. Here, we investigate the electron and hole transport in the non-fullerene acceptor (NFA) IT-4F, by a combination of space-charge-limited current measurements and multiscale molecular simulations. The electron and hole mobilities are fairly balanced, amounting to 2.9 × 10−4 cm2 V−1 s−1 for electrons and 2.0 × 10−5 cm2 V−1 s−1 for holes. Orientational ordering and electronic couplings facilitate a better charge-percolating network for electrons than for holes, while ambipolarity itself is due to sufficiently high

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4

Yang, Qing, Xuan Liu, Shuwen Yu, et al. "Hydroxylated non-fullerene acceptor for highly efficient inverted perovskite solar cells." Energy & Environmental Science 14, no. 12 (2021): 6536–45. http://dx.doi.org/10.1039/d1ee02248b.

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A hydroxylated non-fullerene acceptor (NFA) is developed to modify the interface between the perovskite and the electron transport layer in inverted perovskite solar cells (i-PSCs), achieving a record PCE of 22.09% among reported i-PSCs employing NFAs.

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5

Zhang, Jie, Yunjie Xiang, and Shaohui Zheng. "From Y6 to BTPT-4F: a theoretical insight into the influence of the individual change of fused-ring skeleton length or side alkyl chains on molecular arrangements and electron mobility." New Journal of Chemistry 45, no. 27 (2021): 12247–59. http://dx.doi.org/10.1039/d1nj01515j.

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6

Datt, Ram, Harrison Ka Hin Lee, Michael Spence, Matthew Carnie, and Wing Chung Tsoi. "High performance non-fullerene organic photovoltaics under implant light illumination region." Applied Physics Letters 122, no. 14 (2023): 143906. http://dx.doi.org/10.1063/5.0144861.

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Implantable biomedical electronics, such as pacemakers, drug pumps, cochlear implants, cardioverter-defibrillators, and neurological stimulators, help humans to overcome various diseases. Currently, the power supply for these devices relies on small-size batteries, and replacement of the battery is required after running for a period of time. Recharging the battery could be a way to prolong the replacement cycle. Organic photovoltaics (OPVs) are a class of emerging photovoltaics, which are now becoming more practical with recently developed device and material engineering. The absorption of OP

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7

Grant, Trevor M., Chloé Dindault, Nicole A. Rice, Sufal Swaraj, and Benoît H. Lessard. "Synthetically facile organic solar cells with >4% efficiency using P3HT and a silicon phthalocyanine non-fullerene acceptor." Materials Advances 2, no. 8 (2021): 2594–99. http://dx.doi.org/10.1039/d1ma00165e.

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We demonstrate organic photovoltaic devices with extremely low synthetic complexity by pairing poly(3-hexithiophene) (P3HT) with a novel non-fullerene acceptor (NFA) bis(tri-n-propylsilyl oxide) silicon phthalocyanine ((3PS)<sub>2</sub>-SiPc).

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8

Lu, Qiuchen, Ming Qiu, Meiyu Zhao, Zhuo Li, and Yuanzuo Li. "Modification of NFA-Conjugated Bridges with Symmetric Structures for High-Efficiency Non-Fullerene PSCs." Polymers 11, no. 6 (2019): 958. http://dx.doi.org/10.3390/polym11060958.

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As electron acceptors, non-fullerene molecules can overcome the shortcomings of fullerenes and their derivatives (such as high cost, poor co-solubility, and weak light absorption). The photoelectric properties of two potential non-fullerene polymer solar cells (PSCs) PBDB-T:IF-TN (PB:IF) and PBDB-T:IDT-TN (PB:IDT) are studied by density functional theory (DFT) and time-dependent DFT (TD-DFT). Based on the optimized structure of the ground state, the effects of the electron donor (D) and electron acceptor (A) (D/A) interfaces PBDB-T/IF-TN (PB/IF) and PBDB-T/IDT-TN (PB/IDT) are studied by a quan

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9

Li, Yang, Wei Huang, Dejiang Zhao, et al. "Recent Progress in Organic Solar Cells: A Review on Materials from Acceptor to Donor." Molecules 27, no. 6 (2022): 1800. http://dx.doi.org/10.3390/molecules27061800.

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In the last few decades, organic solar cells (OSCs) have drawn broad interest owing to their advantages such as being low cost, flexible, semitransparent, non-toxic, and ideal for roll-to-roll large-scale processing. Significant advances have been made in the field of OSCs containing high-performance active layer materials, electrodes, and interlayers, as well as novel device structures. Particularly, the innovation of active layer materials, including novel acceptors and donors, has contributed significantly to the power conversion efficiency (PCE) improvement in OSCs. In this review, high-pe

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10

Yang, Chenyi, Shaoqing Zhang, Junzhen Ren, et al. "Molecular design of a non-fullerene acceptor enables a P3HT-based organic solar cell with 9.46% efficiency." Energy & Environmental Science 13, no. 9 (2020): 2864–69. http://dx.doi.org/10.1039/d0ee01763a.

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11

Mumyatov, Alexander V., and Pavel A. Troshin. "A Review on Fullerene Derivatives with Reduced Electron Affinity as Acceptor Materials for Organic Solar Cells." Energies 16, no. 4 (2023): 1924. http://dx.doi.org/10.3390/en16041924.

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Organic solar cells (OSCs) represent a promising emerging photovoltaic technology offering such benefits as light weight, mechanical flexibility, semitransparency, environmental friendliness and aesthetic design of solar panels. Furthermore, organic solar cells can be produced using scalable and high-throughput solution-based printing and coating technologies, which are expected to lead to very low product costs. Fullerene derivatives have been used as acceptor materials in virtually all efficient organic solar cells for more than two decades, following the demonstration of the first proof-of-

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12

G., Guijarro Fernando, María Privado, S. Shyam Shankar, et al. "All-Small-Molecule Ternary Organic Solar Cell with 16.35% Efficiency Enabled by Chlorinated Terminal Units." Solar RRL 8 (July 27, 2024): 2400420. https://doi.org/10.5281/zenodo.14936176.

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The molecules include a vinyl-CPDT oligomer with three units, with end-caps made up of indanedione groups and containing four H, four Cl, and four F substituents. The purpose of the study is to investigate how the halogen substituent affects the photovoltaic characteristics of binary devices made with the non-fullerene acceptor (NFA) TOCR2 as the acceptor. Having the halogen in the device enhances its effectiveness, and FG5, which has 4-Cl substituents in the end groups, shows the highest efficiency among all devices with a PCE of 14.39%. Incredibly, the ternary device that is created in

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13

Chico-Beltrán, Nestor Juan Pablo, Jaime Gustavo Rodríguez-Zavala, Zuriel Natanael Cisneros-García, and Alessandro Romo-Gutiérrez. "Study of the frontier molecular orbitals of an acceptor molecule system: BTP-4F-T2C8, BTP-4F-T2EH, and BTP-4F-T3EH." Journal of Bioengineering and Biomedicine Research 8, no. 2 (2024): 35–44. http://dx.doi.org/10.70632/jbbr.8.2.2024.35-44.

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Non-Fullerene-Acceptors (NFA’s) are a type of acceptor molecules widely used for the manufacture of organic solar cells (OSC). Due to its benefits and advantages over its Fullerene-Acceptors (FA) counterparts, these have become the point of interest in the field of organic photovoltaic technology. In the present theoretical study, electron structure calculations were performed on the frontier molecular orbitals (FMO) of a system of acceptor molecules used in the synthesis of organic solar cells called: BTP-4F-T2C8, BTP-4F-T2EH and BTP-4F-T3EH. The results demonstrate a good trend and approach

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14

Meyer, Edson L., Sindisiwe Jakalase, Azile Nqombolo, Nicholas Rono, and Mojeed A. Agoro. "The Numerical Simulation of a Non-Fullerene Thin-Film Organic Solar Cell with Cu2FeSnS4 (CFTS) Kesterite as a Hole Transport Layer Using SCAPS-1D." Coatings 15, no. 3 (2025): 266. https://doi.org/10.3390/coatings15030266.

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Global warming and environmental pollution due to the overuse and exploitation of fossil fuels are the main issues affecting humans’ well-being. Solar energy is considered to be one of the most promising candidates for providing human society with a clean and sustainable energy supply. Thin-film organic solar cells (TFOSCs) use organic semiconductors as light-absorbing layer materials. TFOSCs have attracted wide research interest due to several advantages, such as easy fabrication, affordability, light weight, and environmental friendliness. Over the years, TFOSCs have been dominated by donor–

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15

Lee, Dongchan, Do Hui Kim, Chang-Mok Oh, et al. "Investigation of Hole-Transfer Dynamics through Simple EL De-Convolution in Non-Fullerene Organic Solar Cells." Polymers 15, no. 20 (2023): 4042. http://dx.doi.org/10.3390/polym15204042.

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In conventional fullerene-based organic photovoltaics (OPVs), in which the excited electrons from the donor are transferred to the acceptor, the electron charge transfer state (eECT) that electrons pass through has a great influence on the device’s performance. In a bulk-heterojunction (BHJ) system based on a low bandgap non-fullerene acceptor (NFA), however, a hole charge transfer state (hECT) from the acceptor to the donor has a greater influence on the device’s performance. The accurate determination of hECT is essential for achieving further enhancement in the performance of non-fullerene

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16

Shehzad, Rao Aqil, Javed Iqbal, Muhammad Usman Khan, et al. "Designing of benzothiazole based non-fullerene acceptor (NFA) molecules for highly efficient organic solar cells." Computational and Theoretical Chemistry 1181 (July 2020): 112833. http://dx.doi.org/10.1016/j.comptc.2020.112833.

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17

Saeki, Akinori. "(Invited) Charge Dynamics in Polymer: Non-Fullerene Solar Cell Studied Using Microwave Conductivity." ECS Meeting Abstracts MA2025-01, no. 16 (2025): 1199. https://doi.org/10.1149/ma2025-01161199mtgabs.

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The quadrupole moment of a non-fullerene acceptor (NFA) generated by the constituent electron donor (D) and acceptor (A) units is a significant factor that affects the charge separation (CS) and charge recombination (CR) processes in organic photovoltaics (OPVs). However, its impact on p-type polymer domains remains unclear. In this study, we synthesized p-type molecules ADA and DAD, which are components of the benchmark PM6 polymer (D: benzodithiophene and A: dioxobenzodithiophene). Planar heterojunction (PHJ) films, a model of bulk heterojunction, were prepared using ADA, DAD, and PM6 as the

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18

Oh, Sora, Chang Eun Song, Taeho Lee, et al. "Enhanced efficiency and stability of PTB7-Th-based multi-non-fullerene solar cells enabled by the working mechanism of the coexisting alloy-like structure and energy transfer model." Journal of Materials Chemistry A 7, no. 38 (2019): 22044–53. http://dx.doi.org/10.1039/c9ta07919j.

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A simple-structured nonfullerene acceptor (NFA), T2-ORH, consisting of a bithiophene core and octyl-substituted rhodanine ends is utilized as the third component in ternary-blend solar cells with PTB7-Th and EH-IDTBR as host materials.

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19

Wang, Zhenye, Di Zhang, Lvpeng Yang, et al. "Mechanically robust and stretchable organic solar cells plasticized by small-molecule acceptors." Science 387, no. 6732 (2025): 381–87. https://doi.org/10.1126/science.adp9709.

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Emerging wearable devices would benefit from integrating ductile photovoltaic light-harvesting power sources. In this work, we report a small-molecule acceptor (SMA), also known as a non–fullerene acceptor (NFA), designed for stretchable organic solar cell ( s -OSC) blends with large mechanical compliance and performance. Blends of the organosilane-functionalized SMA BTP-Si4 with the polymer donor PNTB6-Cl achieved a power conversion efficiency (PCE) of >16% and ultimate strain (ε u ) of >95%. Typical SMAs suppress OSC blend ductility, but the addition of BTP-Si4 enhances it. Although BT

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20

Alle, Ronald, Stephanie Rüth, Kevin Schuller, and Klaus Meerholz. "Unveilling the Mystery of Long-Term Stability of Non-Fullerene Acceptors in Organic Solar Cells – an Electrochemical Study." ECS Meeting Abstracts MA2025-01, no. 33 (2025): 1655. https://doi.org/10.1149/ma2025-01331655mtgabs.

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During recent years, organic solar cells composed of different donor-acceptor-type polymers and so-called “non-fullerene acceptors (NFA)” have exceeded the 20% hurdle. However, still questions remain regarding their long-term stability, in particular the degradation processes involved. There is a contradiction, that the electrochemical performance of NFAs yielding the most stable solar cells (e.g. Y6 and derivatives) show completely irreversible reduction in cyclic voltammetry. Another mystery is that energy levels reported in the literature, differ substantially (several 100s of meV), dependi

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21

Xiang, Yunjie, Chunlin Xu, and Shaohui Zheng. "Increasing Charge Carrier Mobility through Modifications of Terminal Groups of Y6: A Theoretical Study." International Journal of Molecular Sciences 24, no. 10 (2023): 8610. http://dx.doi.org/10.3390/ijms24108610.

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The applications of non-fullerene acceptor Y6 with a new type of A1-DA2D-A1 framework and its derivatives have increased the power conversion efficiency (PCE) of organic solar cells (OSCs) up to 19%. Researchers have made various modifications of the donor unit, central/terminal acceptor unit, and side alkyl chains of Y6 to study the influences on the photovoltaic properties of OSCs based on them. However, up to now, the effect of changes of terminal acceptor parts of Y6 on the photovoltaic properties is not very clear. In the present work, we have designed four new acceptors—Y6-NO2, Y6-IN, Y6

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22

Lee, Dongchan, and Shinuk Cho. "Impact of Solvent-Induced Morphological Changes on Hole Transfer Dynamic during Charge Separation Process." ECS Meeting Abstracts MA2024-02, no. 63 (2024): 4953. https://doi.org/10.1149/ma2024-02634953mtgabs.

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Despite a clear elucidation that the change in PM6:Y6 morphology with different solvents affects photovoltaic performance, the charge dynamics during the charge separation process resulting from these morphological changes have not been extensively studied. However, studies on mobility and photocurrent have shown that holes play a crucial role in charge generation and separation. In the conventional fullerene-based organic photovoltaics (OPVs), in which the excited electrons from the donor are transferred to the acceptor, an electron charge transfer state (eECT) that electrons pass through has

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23

Zhang, Shimiao, Dong Hwan Son, Rahmatia Fitri Binti Nasrun, Sabrina Aufar Salma, Hongsuk Suh, and Joo Hyun Kim. "Medium Bandgap Polymers for Efficient Non-Fullerene Polymer Solar Cells—An In-Depth Study of Structural Diversity of Polymer Structure." International Journal of Molecular Sciences 24, no. 1 (2022): 522. http://dx.doi.org/10.3390/ijms24010522.

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A series of medium bandgap polymer donors, named poly(1-(5-(4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo [1,2-b:4,5-b′]dithiophen-2-yl)thiophen-2-yl)-5-((4,5-dihexylthiophen-2-yl)methylene)-3-(thiophen-2-yl)-4H-cyclopenta[c]thiophene-4,6(5H)-dione) (IND-T-BDTF), poly(1-(5-(4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo [1,2-b:4,5-b′]dithiophen-2-yl)-4-hexylthiophen-2-yl)-5-((4,5-dihexylthiophen-2-yl)methylene)-3-(4-hexylthiophen-2-yl)-4H-cyclopenta[c]thiophene-4,6(5H)-dione (IND-HT-BDTF), and poly(1-(5-(4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo [1,2-b:4,5-b′]dithiophen

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24

Saeki, Akinori. "(Invited) Dynamic Relaxation of Charge Carrier Mobilities in Organic Photovoltaics." ECS Meeting Abstracts MA2024-01, no. 13 (2024): 1047. http://dx.doi.org/10.1149/ma2024-01131047mtgabs.

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A non-fullerene small molecular acceptor (NFA) is a prominent molecule that shows moderate electron mobility and a narrow bandgap complementary to middle-bandgap p-type conjugated polymers, which leads to great improvement in the performance of organic photovoltaic (OPV) cells. However, little is known about the relaxation of charge carriers, which is key to efficient charge transport. Herein, we report simultaneous time-of-flight (TOF) and time-resolved microwave conductivity (TRMC) measurements[1] employing benzodithiophene-based polymer (PBDB-T):soluble C70-fullerere (PCBM) and PBDB-T:NFA (

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25

Jahandar, Muhammad, Jinhee Heo, Soyeon Kim, and Dong Chan Lim. "Efficient Cathode Interfacial Layer for Low-Light/Indoor Non-Fullerene Organic Photovoltaics." Nanoenergy Advances 3, no. 2 (2023): 155–69. http://dx.doi.org/10.3390/nanoenergyadv3020009.

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Indoor organic photovoltaics (IOPVs) have attained considerable research attention as a power source for a low-power consumption self-sustainable electronic device for Internet of Things (IoT) applications. This study aims to develop an efficient cathode interfacial layer (CIL) based on a polyethyleneimine (PEIE) derivative, processed at room temperature, for the advancement of non-fullerene acceptor (NFA)-based IOPVs. Using a simple chemical reaction between polyethyleneimine and cobalt (II) chloride, we developed a 3D network-structured CIL. Through quaternary ammonium salts and chelating, m

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Ham, Gayoung, Damin Lee, Changwoo Park, and Hyojung Cha. "Charge Carrier Dynamics in Non-Fullerene Acceptor-Based Organic Solar Cells: Investigating the Influence of Processing Additives Using Transient Absorption Spectroscopy." Materials 16, no. 16 (2023): 5712. http://dx.doi.org/10.3390/ma16165712.

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In this study, we present a comprehensive investigation into the charge generation mechanism in bulk-heterojunction organic solar cells employing non-fullerene acceptors (NFAs) both with and without the presence of processing additives. While photovoltaic devices based on Y6 or BTP-eC9 have shown remarkable power conversion efficiencies, the underlying charge generation mechanism in polymer:NFA blends remains poorly understood. To shed light on this, we employ transient absorption (TA) spectroscopy to elucidate the charge transfer pathway within a blend of the donor polymer PM6 and NFAs. Inter

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Wang, Xin, Zongtao Wang, Mingwei Li, et al. "A New Dibenzoquinoxalineimide-Based Wide-Bandgap Polymer Donor for Polymer Solar Cells." Polymers 14, no. 17 (2022): 3590. http://dx.doi.org/10.3390/polym14173590.

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The molecular design of a wide-bandgap polymer donor is critical to achieve high-performance organic photovoltaic devices. Herein, a new dibenzo-fused quinoxalineimide (BPQI) is successfully synthesized as an electron-deficient building block to construct donor–acceptor (D–A)-type polymers, namely P(BPQI-BDT) and P(BPQI-BDTT), using benzodithiophene and its derivative, which bears different side chains, as the copolymerization units. These two polymers are used as a donor, and the narrow bandgap (2,20-((2Z,20Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo [3,4-e]thi

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Ramírez Como, Magaly, Luis Resendiz, Osbel Almora Rodríguez, and Lluis F. Marsal. "(Invited) Non-Fullerene Acceptor in Organic Solar Cells Toward Improving Performance as Indoor Light Energy Harvester." ECS Meeting Abstracts MA2024-01, no. 31 (2024): 1530. http://dx.doi.org/10.1149/ma2024-01311530mtgabs.

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Research in organic solar cells aims to develop new materials that improve efficiency. The inception of emerging non-fullerene acceptors (NFAs) by replacing the fullerene counterpart in organic solar cells (OSCs) has pushed the bulk-heterojunction based photovoltaics to achieve efficiencies around 18% [1-6]. In order to produce efficient OSCs, it is required to have donor and acceptor materials with matching absorption bands in the Vis-NIR range, high charge-carrier mobility, and a small energy offset to minimize voltage losses. Mainly, the development of Y7 NFA molecule has improved power con

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Saeki, Akinori. "(Invited) Machine Learning and Fast Experimental Screening-Assisted Development of Organic Solar Cell." ECS Meeting Abstracts MA2023-01, no. 14 (2023): 1349. http://dx.doi.org/10.1149/ma2023-01141349mtgabs.

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Non-fullerene, a small molecular electron acceptor, has substantially improved the power conversion efficiency of organic photovoltaics (OPVs).[1] However, the large structural freedom of π-conjugated polymers and molecules makes it difficult to be explored with limited resources. Machine learning, which is based on the rapidly growing artificial intelligence technology, is a high-throughput method to accelerate the speed of material design and process optimization; however, it suffers from limitations in terms of prediction accuracy, interpretability, data collection, and available data (part

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Imahori, Hiroshi. "Non-Fullerene Acceptors for Organic Photovoltaics." ECS Meeting Abstracts MA2023-01, no. 14 (2023): 1345. http://dx.doi.org/10.1149/ma2023-01141345mtgabs.

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Non-fullerene acceptors (NFA) have attracted much attention in organic photovoltaics because of their excellent light-harvesting property and facile tuning of HOMO-LUMO levels. In particular, ITIC and Y6 type NFAs have exhibited very high power conversion efficiency exceeding 15%. In this talk I will give an overview of our initiatives on NFAs. [1] T. Umeyama, K. Igarashi, D. Sasada, Y. Tamai, K. Ishida, T. Koganezawa, S. Ohtani, K. Tanaka, H. Ohkita, H. Imahori, Chem. Sci., 11, 3250-3257 (2020). [2] T. Umeyama, K. Igarashi, D. Sasada, K. Ishida,T. Koganezawa, S. Ohtani, K. Tanaka, H. Imahori,

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Kim, Minjun, Seung Un Ryu, Sang Ah Park, Yong-Jin Pu, and Taiho Park. "Designs and understanding of small molecule-based non-fullerene acceptors for realizing commercially viable organic photovoltaics." Chemical Science 12, no. 42 (2021): 14004–23. http://dx.doi.org/10.1039/d1sc03908c.

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32

Lee, Youngwan, Telugu Bhim Raju, Hyerim Yeom, et al. "Alkyl Chain Engineering of Low Bandgap Non-Fullerene Acceptors for High-Performance Organic Solar Cells: Branched vs. Linear Alkyl Side Chains." Polymers 14, no. 18 (2022): 3812. http://dx.doi.org/10.3390/polym14183812.

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In this work, we report the synthesis and photovoltaic properties of IEBICO-4F, IEHICO-4F, IOICO-4F, and IDICO-4F non-fullerene acceptors (NFAs) bearing different types of alkyl chains (2-ehtylhexyl (EH), 2-ethylbutyl (EB), n-octyl (O), and n-decyl (D), respectively). These NFAs are based on the central indacenodithiophene (IDT) donor core and the same terminal group of 2-(5,6-difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (IC-2F), albeit with different side chains appended to the thiophene bridge unit. Although the side chains induced negligible differences between the NFAs in te

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Cao, Mingwei, Lei Wang, Huan-huan Gao, Hao Jiang, and Hai Yang Song. "Intrinsic Influence of Selenium Substitution in Thiophene and Benzo-2,1,3-thiadiazole on Electronic Structure, Excited States and Photovoltaic Performances Evaluated by Theoretical Calculation." New Journal of Chemistry, 2022. http://dx.doi.org/10.1039/d2nj04490k.

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In organic solar cells (OSCs), non-fullerene acceptors (NFAs) are of great significance than the traditional fullerene-based acceptor molecules. Based on the milestone NFA Y6, five new A-D-A'-D-A type NFAs by...

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34

Biswas, Swarup, Yongju Lee, Hyojeong Choi, and Hyeok Kim. "Recent Developments in Non-Fullerene-Acceptor-Based Indoor Organic Solar Cells." Journal of Physics: Materials, October 10, 2023. http://dx.doi.org/10.1088/2515-7639/ad01df.

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Abstract For over a decade, donor-acceptor blends composed of organic donors and fullerene acceptors dominated indoor organic solar cells (IOSCs). Numerous researchers have invested time to conduct extensive studies on developing new donor acceptor materials, interlayers, minimizing energy losses, and enhancing the open-circuit voltage (VOC) through device and material engineering, and optimizing device architectures to achieve highly efficient, environmentally stable, and commercially acceptable IOSCs. Through such efforts, the maximum power conversion efficiencies (PCEs) of IOSCs have surpas

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Lee, Wonho, Dongmin Lee, Yongchan Jang, et al. "Impacts of Metal Oxide Diffusion and Materials Design on Thermal Stabilities of Non-Fullerene Polymer Solar Cells." Journal of Materials Chemistry A, 2023. http://dx.doi.org/10.1039/d2ta07390k.

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Non-fullerene acceptor-based polymer solar cells (NFA-PSCs) can exhibit high morphological stabilities under thermal stress, often resulting in the fabrication of thermally stable NFA-PSCs. Here, our stability study with systematic steps...

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Khatua, Rudranarayan, Bibhas Das, and Anirban Mondal. "Rational Design of Non-Fullerene Acceptors via Side-Chain and Terminal Group Engineering: A Computational Study." Physical Chemistry Chemical Physics, 2023. http://dx.doi.org/10.1039/d2cp05958d.

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We investigated the optoelectronic and photovoltaic properties of three types of acceptor-donor-acceptor-based non-fullerene acceptor (NFA) molecules for organic solar cell (OSC) applications. Density functional theory and its time-dependent variant were...

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Ji, Yiwen, Lingxia Xu, Xinyu Mu, Wenjing Wang, and Kun Gao. "Photoinduced intra- and inter-molecular charge transfer dynamics in organic small molecules with intra-molecular push-pull electronic structure." Journal of Materials Chemistry C, 2022. http://dx.doi.org/10.1039/d2tc01534j.

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As electron acceptor materials, organic small molecules with intra-molecular push-pull electronic structure have been widely used in high-efficient organic solar cells (OSCs), usually referred to as non-fullerene acceptor (NFA) molecules....

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Chen, Kaixuan, Huan Wei, Ping-An Chen, et al. "Band-like transport in non-fullerene acceptor semiconductor Y6." Frontiers of Optoelectronics 15, no. 1 (2022). http://dx.doi.org/10.1007/s12200-022-00019-2.

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AbstractThe recently reported non-fullerene acceptor (NFA) Y6 has been extensively investigated for high-performance organic solar cells. However, its charge transport property and physics have not been fully studied. In this work, we acquired a deeper understanding of the charge transport in Y6 by fabricating and characterizing thin-film transistors (TFTs), and found that the electron mobility of Y6 is over 0.3–0.4 cm2/(V⋅s) in top-gate bottom-contact devices, which is at least one order of magnitude higher than that of another well-known NFA ITIC. More importantly, we observed band-like tran

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Sharma, Anirudh, Julien Gorenflot, Han Xu, et al. "Elucidating the Role of Heterojunction in Pristine Non-Fullerene Acceptor Organic Solar Cells." Energy & Environmental Science, 2025. https://doi.org/10.1039/d5ee02324f.

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Non-fullerene acceptors (NFAs) are rapidly transforming organic solar cell (OSC) performance and stability, yet the operational principles of pristine NFA devices remain underexplored. Here, we reveal that interfacial energetics, rather...

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Xu, Lei, Sunsun Li, Wenchao Zhao, et al. "The Role of Solution Aggregation Property towards High‐Efficiency Non‐Fullerene Organic Photovoltaic Cells." Advanced Materials, April 26, 2024. http://dx.doi.org/10.1002/adma.202403476.

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AbstractIn organic photovoltaic cells, the solution‐aggregation effect (SAE) is long considered a critical factor in achieving high power‐conversion efficiencies for polymer donor (PD)/non‐fullerene acceptor (NFA) blend systems. However, the underlying mechanism has yet to be fully understood. Herein, based on an extensive study of blends consisting of the representative 2D‐benzodithiophene‐based PDs and acceptor‐donor‐acceptor‐type NFAs, we demonstrate that SAE shows a strong correlation with the aggregation kinetics during solidification, and the aggregation competition between PD and NFA de

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Padula, Daniele, Alessandro Landi, and Giacomo Prampolini. "Assessing alkyl side chain effects on electron transport properties of Y6–derived non–fullerene acceptors." Energy Advances, 2023. http://dx.doi.org/10.1039/d3ya00149k.

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Recent non-fullerene acceptor (NFA) advancements have propelled organic photovoltaics efficiency to ≈ 20% in single junction solar cells, thanks to the introduction of the very promising L8-R series, obtained by...

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Pranav, Manasi, Atul Shukla, David Moser, et al. "On the critical competition between singlet exciton decay and free charge generation in non-fullerene-based organic solar cells with low energetic offset." Energy & Environmental Science, 2024. http://dx.doi.org/10.1039/d4ee01409j.

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Reducing voltage losses while maintaining high photocurrents is the holy grail of current research on non-fullerene acceptor (NFA) based organic solar cell. Recent focus lies in understanding the manifold fundamental...

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Suthar, Rakesh, T. Abhijith, and Supravat Karak. "Machine-Learning-Guided Prediction of Photovoltaic Performance for Non-fullerene Organic Solar Cells using Novel Molecular and Structural Descriptors." Journal of Materials Chemistry A, 2023. http://dx.doi.org/10.1039/d3ta04603f.

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Recent development of novel conjugated polymer donor and non-fullerene acceptor (NFA) materials with promising properties have led to an unprecedented rise in the power conversion efficiency (PCE) of organic solar...

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Li, Wencheng, Zhijun Cao, Xingyu Xie, Yingping Zou, and Shaohui Zheng. "Asymmetric alkoxy side chain engineering on A-DA'D-A non-fullerene acceptors：An effective strategy to enhance crystallinity and electron mobility." Physical Chemistry Chemical Physics, 2025. https://doi.org/10.1039/d5cp01396h.

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Introducing alkoxy side chain (ASC) to high performance non-fullerene acceptor (NFA) is a simple but effective strategy to enhance device efficiency. However, the intrinsic mechanism is still an open question,...

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Peng, Jing, Lijiao Ma, Huixue Li, et al. "A Comprehensive Study on the Halogenation Effect of Non-Fullerene Acceptors for Photovoltaic Application." Materials Chemistry Frontiers, 2024. http://dx.doi.org/10.1039/d4qm00648h.

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In this study, four non-fullerene acceptor (NFA) materials, namely ITC9-4F, ITC9-4Cl, ITC9-4Br, and ITC9-4I, were designed and synthesized by introducing 4F, 4Cl, 4Br, and 4I substituents within their end groups,...

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Manikandan, Suraj, and Jens Wenzel Andreasen. "Integration of Photovoltaic Organic Materials into mm-Wave Technologies: Towards Self-Powered Phase Shifters." Journal of Materials Chemistry C, 2024. http://dx.doi.org/10.1039/d4tc02828g.

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This paper introduces a Ka-band phase shifter that leverages a blend of the donor polymer PM6 and non-fullerene acceptor (NFA) Y7 organic materials. The design integrates a coplanar waveguide (CPW)...

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Hadmojo, Wisnu, Qiao He, Muntaser Almansoori, et al. "Stable and Efficient Organic Solar Cells Featuring an Ultra-thin and Transparent Solution-Deposited MoO3 Hole Extraction Layer." Journal of Materials Chemistry A, 2025. https://doi.org/10.1039/d5ta03360h.

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The development of non-fullerene acceptor (NFA) based organic solar cells (OSCs) featuring self-assembled monolayers (SAMs) as the transparent hole extraction layers (HELs) has led to power conversion efficiency (PCE) values...

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Giannini, Samuele, Jesús Cerdá, Giacomo Prampolini, Fabrizio Santoro, and David Beljonne. "Dissecting the nature and dynamics of electronic excitations in a solid-state aggregate of a representative non-fullerene acceptor." Journal of Materials Chemistry C, 2024. http://dx.doi.org/10.1039/d4tc01716a.

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Understanding electronic excitations and their dynamics in non-fullerene acceptor (NFA) materials is crucial for improving the efficiency of opto-electronic devices. In this study, we use a Frenkel-exciton Hamiltonian, which couples...

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Tang, Yabing, Hong Zheng, Xiaobo Zhou, Zheng Tang, Wei Ma, and Han Yan. "N-Dopants Optimize the Utilization of Spontaneously Formed Photocharges in Organic Solar Cells." Energy & Environmental Science, 2023. http://dx.doi.org/10.1039/d2ee03612f.

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The non-fullerene acceptor (NFA) not only brings rapid efficiency progress to organic solar cell (OSC), but also arouses scientific interest in re-evaluating the photocharge generation route via spontaneous or heterojunction-assisted...

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Panagiotopoulos, Apostolos, George Kakavelakis, Kyriakos Almpanidis, Leslie Askew, Dimitar Kutsarov, and S. Ravi P. Silva. "Highly efficient organic solar cells enabled by ultraviolet-ozone treated molybdenum oxide hole transport layers." Journal of Materials Chemistry A, 2025. https://doi.org/10.1039/d4ta07795d.

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The application of ultraviolet ozone (UV-Ozone) treatment of thermally evaporated molybdenum oxide (MoOx) as a hole transport layer (HTL) in non-fullerene acceptor (NFA)-organic solar cells (OSCs) has markedly improved the...

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