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Dissertations / Theses on the topic 'Cathodes hybrides'

Author: Grafiati

Published: 11 January 2025

Last updated: 31 July 2025

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1

Adjez, Yanis. "Stimulation of Electrocatalytic Reduction of Nitrate by Immobilized Ionic Liquids." Electronic Thesis or Diss., Sorbonne université, 2024. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2024SORUS337.pdf.

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La pollution de l'eau par les nitrates représente un défi environnemental majeur et constitue l'une des dix violations les plus courantes de la qualité de l'eau dans le monde. Ce défi offre une opportunité pour l'économie circulaire, car l'électrolyse des nitrates a été proposée comme une méthode durable pour la valorisation des effluents contaminés par les nitrates grâce à la production décentralisée et simultanée d'ammoniac (un produit chimique de base). En particulier, la réduction électrochimique des nitrates (REN) est une stratégie prometteuse et durable pour résoudre le problème critique

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2

Moraw, Franz Christian. "Hybrid PEM fuel cell : redox cathode approach." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/7720.

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The proton exchange membrane fuel cell (PEMFC) is considered to be a promising power device with a broad range of applications. However, there are still a number of challenges especially concerning performance, cost, and reliability of these systems. The redox flow battery utilizes fundamentally simpler chemistry, but has limitations in terms of membranes/materials used in system construction and in terms of redox regeneration requirements. The hybridization of a PEMFC anode with a redox flow battery cathode, replacing the limiting oxygen electrode, leads to both advantages and compromises in

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3

Osiecki, Tomasz, Colin Gerstenberger, Holger Seidlitz, Alexander Hackert, and Lothar Kroll. "Behavior of Cathodic dip Paint Coated Fiber Reinforced Polymer/Metal Hybrids." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-175536.

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Increasing mechanical, economic and environmental requirements lead to multi material designs, wherein different classes of materials and manufacturing processes are merged to realize lightweight components with a high level of functional integration. Particularly in automotive industry the use of corresponding technologies will rise in the near future, as they can provide a significant contribution to weight reduction, energy conservation and therefore to the protection of natural resources. Especially the use of continuous fiber reinforced polymers (FRP) with thermoplastic matrices offers ad

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4

Gustavsson, Lars-Erik. "Hollow Cathode Deposition of Thin Films." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Universitetsbiblioteket [distributör], 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6925.

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5

Söderström, Daniel. "Modelling and Applications of the Hollow Cathode Plasma." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8747.

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This thesis presents experimental and modelling research on atmospheric pressure hollow cathodes and hollow electrodes. Experiments with the hybrid hollow electrode activated discharge (H-HEAD), which is a combination of a hollow cathode and a microwave plasma source, is presented. The experiments show that this source is able to produce long plasma columns in air and nitrogen at atmospheric pressure and at very low gas flow rates. Measurements of the vibrational temperature of the nitrogen molecules are also presented in this thesis. The vibrational temperature is an indication of the electro

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6

Ezzedine, Mariam. "Fabrication of hierarchical hybrid nanostructured electrodes based on nanoparticles decorated carbon nanotubes for Li-Ion batteries." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX105/document.

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Cette thèse est consacrée à la fabrication ascendante (bottom-up) de matériaux nanostructurés hybrides hiérarchisés à base de nanotubes de carbone alignés verticalement (VACNTs) décorés par des nanoparticules (NPs). En fonction de leur utilisation comme cathode ou anode, des nanoparticules de soufre (S) ou silicium (Si) ont été déposées. En raison de leur structure unique et de leurs propriétés électroniques, les VACNTs agissent comme une matrice de support et un excellent collecteur de courant, améliorant ainsi les voies de transport électroniques et ioniques. La nanostructuration et le conta

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7

Holmes, Steven. "An investigation into the practical and theoretical aspects of hybrid cathodic protection." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/12280.

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Galvanic anode technology has in recent years come to the fore as a cost-effective method of successfully mitigating the corrosion of reinforcing steel in concrete structures. Developments in the field of cathodic protection have included the introduction of a novel Hybrid anode system, which uses the same sacrificial anode to pass a short-term impressed current before being connected to the steel directly to provide a long-term galvanic current. Galvanic and hybrid technologies are often seen as less powerful solutions in the treatment of reinforcement corrosion, and the test methodologies wh

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8

Myalo, Zolani. "Graphenised Lithium Iron Phosphate and Lithium Manganese Silicate Hybrid Cathode Systems for Lithium-Ion Batteries." University of the Western Cape, 2017. http://hdl.handle.net/11394/6036.

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Magister Scientiae - MSc (Chemistry)<br>This research was based on the development and characterization of graphenised lithium iron phosphate-lithium manganese silicate (LiFePO4-Li2MnSiO4) hybrid cathode materials for use in Li-ion batteries. Although previous studies have mainly focused on the use of a single cathode material, recent works have shown that a combination of two or more cathode materials provides better performances compared to a single cathode material. The LiFePO4- Li2MnSiO4 hybrid cathode material is composed of LiFePO4 and Li2MnSiO4. The Li2MnSiO4 contributes its high

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9

El, jouad Zouhair. "Réalisation et caractérisation des cellules photovoltaïques organiques." Thesis, Angers, 2016. http://www.theses.fr/2016ANGE0022/document.

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Cette thèse s’insère dans un projet d’élaboration et de caractérisation des cellules photovoltaïques organiques classiques et inverses, plus précisément il s’agit d’améliorer les performances des cellules via des couches tampons anodiques et cathodiques originales. Nous avons commencé d’améliorer les couches tampons cathodiques avec différents donneurs d’électrons: phtalocyanine de cuivre CuPc, subphtalocyanine SubPc et dérivés de thiophène organiques. Dans le premier cas de donneur d’électrons (CuPc), nous avons mis en évidence l’effet d’une fine couche d’un composé de césium, utilisée comme

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10

Vickers, Simon. "Particle in cell and hybrid simulations of the Z double-post-hole convolute cathode plasma evolution and dynamics." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/17874.

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The Z-accelerator at Sandia National Laboratories (SNL), is a high-current pulsed power machine used to drive a range of high energy density physics (HEDP) experiments [1]. To achieve peak currents of >20MA, in a rise time of ~100ns, the current is split over four levels of transmission line, before being added in parallel in a double-post-hole convolute (DPHC) and delivered to the load through a single inner magnetically insulated transmission line (MITL). The electric field on the cathode electrode, >107Vm-1, drives the desorption and ionisation of neutral contaminants to form a plasma from

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11

Kuhakan, J., M. Medhisuwakul, and L. D. Yu. "Filtered Cathodic Vacuum Arc Deposition of Porous and Nanostructured Carbon and Hybrid C-Mo Thin Films for Fuel Cell Membranes." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34867.

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In our proton exchange membrane (PEM) fuel cells, the electrolyte is a catalyst platinum (Pt) coated nafion membrane. In order to increase the electrochemically active catalyst area to enhance the cell performance but without sacrificing the electrical conductivity of the membrane, carbon thin films were deposited onto the membrane by using the filtered cathodic vacuum arc deposition (FCVAD) technique. With varying the deposition conditions, it was possible to form porous carbon films and nanoisland and nanorod structure surface which increased the catalyst area when a higher He working g

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12

Bouharras, Fatima Ezzahra. "Développement de nanocomposites BaTiO3 @ polymères fluorés pour les matériaux diélectriques et comme liant de cathode dans les batteries lithium Core shell structured Poly(Vinylidene Fluoride) -grafted- BaTiO3 nanocomposites prepared via Reversible Addition-fragmentation chain transfer (RAFT) polymerization of VDF for high energy storage capacitors Recent Progress on Core-Shell Structured BaTiO3/Fluorinated Polymers Nanocomposites for High Energy Storage: Synthesis, Dielectric properties and Applications." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2020. http://www.theses.fr/2020ENCM0002.

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Les matériaux nanocomposites présentent des propriétés physico-chimiques uniques qui ne peuvent être obtenues en utilisant un seul composant. Ainsi, l'amélioration des propriétés de ces matériaux a suscité un intérêt majeur dans différents domaines. Les matériaux nanocomposites diélectriques à haute densité d'énergie présentent des performances prometteuses pour les applications de stockage d'énergie. Des efforts importants ont été menés pour combiner la constante diélectrique élevée de la céramique avec la flexibilité et la facilité de mise en œuvre des polymères. Ainsi, cette thèse porte sur

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13

Zubets, Uladzislau. "Cátodos frios de filmes híbridos grafeno/nanodiamante obtidos por CVD com modulação temporal." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/16937.

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Mestrado em Engenharia Física<br>Os objetivos principais deste trabalho são a produção de nanoestruturas híbridas de carbono compostas por grafeno e agregados de diamante nanocristalino, bem como a sua caracterização estrutural, morfológica e como cátodos frios. Estas estruturas híbridas poderão ter um interesse tecnológico muito elevado uma vez que reúnem no mesmo material estruturas de carbono com propriedades físicas muito distintas. Entre as várias aplicações possíveis destes híbridos destaca-se a sua utilização na fabricação de dispositivos baseados na emissão de eletrões por efeito de c

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14

Gutierrez, Quentin. "Nouvelle technologie de lampe fluorescente à colonne positive hybride, initiée à la cathode par plasma à onde de surface, et émetteurs UV moléculaires S2 et N2/O2 en remplacement du mercure. Caractérisation des performances d'éclairage des prototypes de lampes avec luminophores dédiés." Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALI055.

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Le travail de cette thèse, financé l’ANR-20-CE05-0012 ADELINE, porte sur l’élaboration d’unenouvelle génération de lampes fluorescentes exemptes de Hg et Ga. Elle s’appuie sur l’émission UV + Visibled’une décharge moléculaire à basse pression et sur la conversion subséquente dans le domaine du Visible par desluminophores adaptés au spectre d’émission de la décharge. L’utilisation d’émetteurs moléculaires, généralementréactifs à haute température, exige le remplacement de la cathode chaude telle qu’utilisée dans les lampesfluorescentes Ar-Hg. L’originalité de ce travail consiste dans sa substit

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15

Chou, Shu-Wei, and 周舒韡. "Electrodeposition of metal sulfides as cathode material for hybrid supercapacitors." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/62673718443724602942.

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博士<br>大同大學<br>化學工程學系(所)<br>103<br>In recent years, nanostructure metal sulfides have been widely employed as electrode materials in hybrid supercapacitors (SCs) due to their high specific capacity and excellent electrochemical stability. Generally, the metal sulfides are usually prepared by using chemical method, such as chemical precipitation and hydrothermal methods. However, the metal sulfide powders still need polymer binder, conducting agent and high pressure coating on the conductive substrate, which could contribute extra contact resistances. In the chapter 3 of this thesis, metal sulfi

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16

Chih-Yi, Lee, and 李志毅. "Thermal hazard study of cathode materials mixed with hybrid organic carbonates." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/j3a2nx.

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碩士<br>國立聯合大學<br>環境與安全衛生工程學系碩士班<br>104<br>Lithium-ion battery becomes the most important energy supplier with the rapid development of the portable electric and electronic products. However overheating, fire and explosion accidents occurred from time to time owing to battery thermal runaway. One of the possible reasons is the exothermic reaction between the lithiated cathode materials and electrolytes. In this study thermal curves of eight lithiated cathode materials reacted with different electrolytes that are commonly used in lithium-ion battery are performed in a Mettler TA-4000 System coup

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17

(8070293), Zhimin Qi. "MANGANESE-BASED THIN FILM CATHODES FOR ADVANCED LITHIUM ION BATTERY." Thesis, 2021.

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<p>Lithium ion batteries have been regarded as one of the most promising and intriguing energy storage devices in modern society since 1990s. A lithium ion battery contains three main components, cathode, anode, and electrolyte, and the performance of battery depends on each component and the compatibility between them. Electrolyte acts as a lithium ions conduction medium and two electrodes contribute mainly to the electrochemical performance. Generally, cathode is the limiting factor in terms of capacity and cell potential, which attracts significant research interests in this field.Different

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18

Wen, Wei-Te. "Hybrid Organic / Inorganic Solar Cells Based On Electrodeposited ZnO Nanowire Arrays on ITO and AZO Cathodes." Thesis, 2012. http://hdl.handle.net/1807/35519.

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ZnO nanowire arrays (NWAs) and Al-doped ZnO (AZO) cathodes were applied in hybrid organic / inorganic solar cells for lower-cost solar energy. Parameters for the electrodeposition of ZnO NWAs and the fabrication of NWA-free baseline devices were systematically optimized using ITO as the cathodes. High efficiencies of up to 5.4% were achieved. Incorporation of the ZnO NWAs into the baseline devices significantly reduced their efficiencies due to possible shorting in the active layer. Devices fabricated using AZO cathodes were characterized. The AZO-based devices achieved efficiencies of up to ~

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19

Hsu, Hao, and 徐顥. "High efficient FEOLED with an Ag nanoparticle-carbon nanotube hybrid film as cathode." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/ve8epm.

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碩士<br>義守大學<br>電子工程學系<br>102<br>In this study, we deposit Ag nanoparticles (Ag NPs)-doped carbon nanotube (CNT) suspension on metal by spray technique to produce a high current density carbon nanotube field emission electron source substrate. Field emission organic light-emitting diodes (FEOLEDs) are fabricated by combining the CNT field emission electron source with organic light-emitting diodes (OLEDs), which demonstrate a higher luminous efficiency than OLEDs. The study of a CNT field emission electron source substrate is to enhance the field emission characteristics. First, Cu, Ag or Al i

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20

Loganathan and 駱那登. "Development of microplasma devices with hybrid diamond cathode for high stability UV emission sources." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/81306331375667992834.

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碩士<br>國立清華大學<br>工程與系統科學系<br>104<br>Abstract This thesis describes the development of microplasma devices architecture by hybrid diamond as cathode. These microplasma devices are suitable for UV emission sources and corresponding applications. The cathode boundary layer (CBL) discharge device structure has been implemented in this study, which consist of 2 mm cylindrical cavity in the centre of anode. Here, two types of devices were fabricated, such as two electrode and novel three electrode devices. These devices were tested with Ar (10 %) + N2 (90 %) gas used as discharge medium for generati

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21

Santos, Nuno Miguel Franco dos. "Filmes CVD de híbridos de nanocarbono para dispositivos microelectrónicos e biomédicos." Doctoral thesis, 2018. http://hdl.handle.net/10773/27727.

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The simultaneous synthesis of nanocarbon allotropes is a challenging issue. In this work, chemical vapor deposition (CVD) is demonstrated to be a successful strategy to obtain hybrid functional thin films, which are employed in prototypes in the fields of microelectronics and biomedicine. Three types of nanocarbon hybrids are explored: intimate mixtures of nanocrystalline diamond (NCD) and carbon nanotubes (CNTs) (NCD-CNTs), NCD and graphene (GDHs), and NCD and nanographite in platelet-like morphology (DGNPs or DNPs) are obtained by microwave-plasma CVD (MPCVD) in rapid and singlestep procedu

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22

Sasmoko and 柯莫. "Analysis of Proton Conducting Solid Oxide Fuel Cell Hybrid Systems with Anode and Cathode Recycling." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/e24ug8.

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碩士<br>國立中央大學<br>機械工程學系<br>104<br>p‒SOFC is an appropriate fuel cell type to be applied in the power generating system. p‒SOFC is combined with MGT and CHP to utilize the hydrogen and oxygen unreacted from the stack. Some parameters are fixed by using Matlab / Simulink such as 50 cells, membrane area of 0.1 m2. Furthermore, three cases, cases 1, 2, and 3, are analyzed, and the best case, case 2, is installed with anode and cathode recycling, to increase system performance. Some parameters are varied to be analyzed such as fuel utilization, steam to fuel, air stoichiometry, and fuel stoichiometr

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23

Peng, Si Han, and 彭思翰. "Syntheses and characterization of Co3O4/graphene composite materials and their applications as activated materials on air cathodes in hybrid electrolyte lithium-air batteries." Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107CGU05063036%22.&searchmode=basic.

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24

"Analyzing the Performance of Lithium-Ion Batteries for Plug-In Hybrid Electric Vehicles and Second-Life Applications." Master's thesis, 2017. http://hdl.handle.net/2286/R.I.45026.

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abstract: The automotive industry is committed to moving towards sustainable modes of transportation through electrified vehicles to improve the fuel economy with a reduced carbon footprint. In this context, battery-operated hybrid, plug-in hybrid and all-electric vehicles (EVs) are becoming commercially viable throughout the world. Lithium-ion (Li-ion) batteries with various active materials, electrolytes, and separators are currently being used for electric vehicle applications. Specifically, lithium-ion batteries with Lithium Iron Phosphate (LiFePO4 - LFP) and Lithium Nickel Manganese Cobal

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25

Kurniawan, Rizmahardian Ashari, and 古杉力. "HYBRID BIOFUEL CELL BASED ON CARBON NANOTUBE COVALENTLY ATTACHED LACCASE CATHODE AND POLYANILINE-COATED CARBON NANOTUBE-SUPPORTED Pt BIMETALLIC ANODE." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/29771436293702804680.

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碩士<br>國立中央大學<br>化學學系<br>101<br>Economic and environmental requirements have motivated research in energy generation. Here, hybrid biofuel cell have been developed to meet the need. The cathode composed of laccase immobilized on CNT (CNT-Laccase), while the anode is Pt bimetallic alloy deposited on polyaniline-coated carbon nanotube (PANICNT). CNT-Laccase was characterized by Fourier Transform Infrared (FTIR) Spectrophotometry, Surface Electron Microscopy (SEM) and Thermogravimetric Analysis (TGA). CNT-Laccase FTIR spectra showed that the structure contain several functional groups, such as hyd

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26

HSIAO, YU-CHEN, and 蕭煜丞. "Highly-Efficient and Long-Term Stable Perovskite Solar Cells with a Novel Cross-Linkable N-Doped Hybrid Cathode Interfacial Layer." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/8snpeu.

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碩士<br>逢甲大學<br>材料科學與工程學系<br>106<br>Hybrid organic−inorganic halide perovskite solar cells (PeSCs) are currently at the forefront of emerging photovoltaic technologies due to their potential for providing cost-effective highly efficient solar energy conversion. The interfacial layers play an important role in determining the efficiency and stability of PeSCs. In this work, a solution-processed cross-linkable hybrid composite film composed of N,Ndimethyl-N-octadecyl(3-aminopropyl)-trimethoxysilyl chloride silane (DMOAP)-doped [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) is demonstrated as

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