Academic literature on the topic 'Photo-induced charge'
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Journal articles on the topic "Photo-induced charge"
Hashimoto, Hiroshi, Hiroaki Matsueda, Hitoshi Seo, and Sumio Ishihara. "Photo-Induced Dynamics in Charge-Frustrated Systems." Journal of the Physical Society of Japan 83, no. 12 (December 15, 2014): 123703. http://dx.doi.org/10.7566/jpsj.83.123703.
Full textRomero, Angel H., Ivan E. Romero, Oscar E. Piro, Gustavo A. Echeverría, Lourdes A. Gotopo, Matías N. Moller, Gonzalo A. Rodríguez, et al. "Photo-Induced Partially Aromatized Intramolecular Charge Transfer." Journal of Physical Chemistry B 125, no. 32 (August 6, 2021): 9268–85. http://dx.doi.org/10.1021/acs.jpcb.1c03747.
Full textHe, Dong-Qing, Hong-Cheng Liu, Qi Wang, Qian Yu, Jin-Ying Liu, Yun-Peng Qu, and Xiao-Chen Zhang. "Photo-Induced Charge Transfer on Pt/Bi2WO6 Composite Photocatalysts." Journal of Nanoscience and Nanotechnology 20, no. 3 (March 1, 2020): 1838–44. http://dx.doi.org/10.1166/jnn.2020.17153.
Full textPiet, Jacob J., John M. Warman, and Harry L. Anderson. "Photo-induced charge separation on conjugated porphyrin chains." Chemical Physics Letters 266, no. 1-2 (February 1997): 70–74. http://dx.doi.org/10.1016/s0009-2614(96)01498-4.
Full textSun, Hai, and Morton Z. Hoffman. "Photo-induced charge separation by ruthenium (II) photosensitizers." Journal of Chemical Sciences 105, no. 6 (October 1993): 487–94. http://dx.doi.org/10.1007/bf03040820.
Full textLuo, Simon, William White, Joseph M. Cardon, and Shane Ardo. "Clarification of mechanisms of protonic photovoltaic action initiated by photoexcitation of strong photoacids covalently bound to hydrated Nafion cation-exchange membranes wetted by aqueous electrolytes." Energy & Environmental Science 14, no. 9 (2021): 4961–78. http://dx.doi.org/10.1039/d1ee00482d.
Full textWatanabe, M., M. Miyahara, and K. Tanaka. "Photo-induced changes in charge-ordered state of Ti4O7." Journal of Physics: Conference Series 148 (February 1, 2009): 012017. http://dx.doi.org/10.1088/1742-6596/148/1/012017.
Full textKantor-Uriel, Nirit, Partha Roy, Keti Lerman, Chaim N. Sukenik, and Hagai Cohen. "Dark and photo-induced charge transport across molecular spacers." Journal of Vacuum Science & Technology B 36, no. 4 (July 2018): 04H104. http://dx.doi.org/10.1116/1.5037219.
Full textKamioka, Hayato, Masahiro Hirano, and Hideo Hosono. "Photo-induced charge state conversion of Eu2+ in Ca2ZnSi2O7." Journal of Applied Physics 106, no. 5 (September 2009): 053105. http://dx.doi.org/10.1063/1.3213360.
Full textSatoh, Kenta, and Sumio Ishihara. "Photo-induced phase transition in charge ordered perovskite manganites." Journal of Magnetism and Magnetic Materials 310, no. 2 (March 2007): 798–800. http://dx.doi.org/10.1016/j.jmmm.2006.10.199.
Full textDissertations / Theses on the topic "Photo-induced charge"
Benjamin, Daniel. "Thermal transport and photo-induced charge transport in graphene." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42746.
Full textCook, Steffan. "Photo-induced charge generation and recombination in conjugated polymer methanofullerene blend films." Thesis, Imperial College London, 2006. https://spectradspace.lib.imperial.ac.uk:8443/dspace/handle/10042/9.
Full textAlbero, Sancho Josep. "Photo-induced charge transfer reactions in quantum dot based solar cells." Doctoral thesis, Universitat Rovira i Virgili, 2012. http://hdl.handle.net/10803/81717.
Full textThe fundamental processes of the charge transfer reactions between titania dioxide mesoporous films and quantum dots, in blend films of the semiconductor polymer P3HT and CdSe quantum dots and in complete devices fabricated with the polymer PDPCTBT and CdSe quantum dots in working conditions have been studied in this doctoral thesis. The obtained results allow the fabrication of photovoltaic devices with a deeper and wider knowledge of the recombination processes that limit the device efficiency. Therefore, it is demonstrated the possibility of fabrication of quantum dot based solar cells with efficiencies similar or higher than the organic photovoltaic devices.
Chavez, Cervantes Mariana [Verfasser], and Isabella [Akademischer Betreuer] Gierz. "Photo-Carrier Dynamics and Photo-Induced Melting of Charge Density Waves in Indium Wires / Mariana Chavez Cervantes ; Betreuer: Isabella Gierz." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2020. http://d-nb.info/1212585143/34.
Full textVargas, Hernandez Jesus. "Structural and Morphological modification of TiO2 doped metal ions and investigation of photo-induced charge transfer processes." Thesis, Le Mans, 2017. http://www.theses.fr/2017LEMA1018/document.
Full textThe thesis work is focused on the synthesis methods of titanium dioxide nanostructures and their physico-chemical studies in order to point out the correlations between the morphology, metal doping, structural features with the photocatalytic efficiency. The great interest on TiO2 nanomaterials deals with new sources of energy or in the environment preservation through the photocatalytic properties. However, the main limitations is due to the wide band gap (~3.2 eV) of the anatase polymorph. Thus, a major objective for improvement of the performance of TiO2 nanomaterials is to increase theirphotoactivity by shifting the onset of the electron-hole pairs creation from UV to the visible range. Moreover, it was found that using onedimensional (1-D) TiO2 (nanotubes) improved the charge collection by 1D nanostructures which consequently minimizes the recombination and prolongate the electron lifetimes. The first part of this work is focused on the synthesis of TiO2 nanopowders doped with metallic ions (Ag, Cu, Eu) prepared by Solgel. Even with different doping elements which apparently can adopt the same valence state (2+) such as (Cu2+, Ag2+,Eu2+), different behaviors were demonstrated for the effective incorporation of these ions in the host structure of TiO2. The discrepancy between ionic radii of the different used elements modulates the ratio of the substitutional doping. This is indeed achieved for Cu2+ but in less extent for Ag2+ while Europium ions form segregated phase as Eu2Ti2O7. The experiments on the degradation of methylene blue (MB)dyes have shown slight improvement with Ag-doped samples. The reason was tentatively attributed to the Ag clusters which were indeed demonstrated through their plasmon optical band. The second part of the work concerns thin films of TiO2 doped (Cu, Ag, and Eu) which were elaborated by spin coating and dip coating. The optimal parameters were obtained to achieve crystalline films but presenting mesoporous organisation which also depends on the doping process. Photocatalysis investigations were also realized and the efficiency of the films compared as function of the doping elements.The third part of the thesis is related to the morphological modification from nanoparticles to nanotubes by using the hydrothermal method with controlled pressure. An experimental design based on Taguchi Method was employed for the determination of the optimal parameters. TiO2 nanotubes increase the surface area in comparison with TiO2nanoparticles. TiO2 nanotubes were tested for the methylene blue degradation and show a higher photocatalytic efficiency than TiO2 nanopowders and TIO2 doped with Ag
Green, Travis Christopher. "Photo-induced charge carrier dynamics and self-organization in semiconductor and metallic nanocrystals : in between the bulk and individual molecules." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/30480.
Full textMenting, Raoul. "Light-induced energy and charge transfer processes in artificial photosynthetic systems." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2013. http://dx.doi.org/10.18452/16656.
Full textThe main objective of the present thesis was to conduct investigations of photo-induced electron transfer (ET) and excitation energy transfer (EET) processes in model compounds that are considered potentially appropriate for use in artificial photosynthesis. Two approaches have been used to construct the artificial photosynthetic systems, namely covalent and supramolecular approach. In both systems similar optically active molecules have been employed, particularly silicon-based phthalocyanines (SiPc). A comparative study between the covalently-linked and self-assembled systems had been conducted. For these purposes, thorough spectroscopic measurements in the UV/Vis range had been performed on these conjugates. A combination of steady-state and time-resolved experiments allowed an identification and quantification of the photo-induced ET and EET processes. In the first part of the work several covalently bound triads and a pentad bearing a central SiPc unit were studied. In all systems highly efficient ET and EET processes take place. It was found that the solvent exerts great influence on the photophysical properties of the systems. The lifetime of the charge-separated state varied from 1.7 ns (toluene) down to 30 ps (DMF). In the second part of the thesis, for the first time the formation of ternary supramolecular complexes consisting of a beta-cyclodextrin (CD), a conjugated subphthalocyanine (SubPc), a porphyrin (Por) and a series of SiPcs substituted axially with two CDs via different spacers was shown. These components are held in water by host-guest interactions and the formation of these host-guest complexes was found to be very efficient. Upon excitation of the SubPc-part of the complex sequential ET and EET processes from SubPc to SiPc take place. The Por dye acts as a transfer bridge enabling these processes. The probability of ET is controlled by the linker between CD and SiPc. Charge recombination to the ground state occurs within 1.7 ns.
Haupt, Kerstin Anna. "Phase transitions in transition metal dichalcogenides studied by femtosecond electron diffraction." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85608.
Full textENGLISH ABSTRACT: Low-dimensional materials are known to undergo phase transitions to differently or- dered states, when cooled to lower temperatures. These phases often show a periodic modulation of the charge density (called a charge density wave – CDW) coupled with a periodic perturbation of the crystal lattice (called a periodic lattice distortion – PLD). Although many experiments have been performed and much has been learnt about CDW phases in low-dimensional materials, the reasons for their existence are still not fully understood yet. Many processes, involving either strong electron–electron or electron–lattice coupling, have been observed which all might play a role in explaining the formation of different phases under different conditions. With the availability of femtosecond lasers it has become possible to study materials under highly nonequilibrium conditions. By suddenly introducing a known amount of energy into the system, the equilibrium state is disturbed and the subsequent relax- ation processes are then observed on timescales of structural and electronic responses. These experiments can deliver valuable information about the complex interactions between the different constituents of condensed matter, which would be inaccessible under equilibrium conditions. We use time resolved electron diffraction to investigate the behaviour of a CDW system perturbed by a short laser pulse. From the observed changes in the diffraction patterns we can directly deduce changes in the lattice structure of our sample. A femtosecond electron diffraction setup was developed at the Laser Research In- stitute in Stellenbosch, South Africa. Short laser pulses produce photo electrons which are accelerated to an energy of 30 keV. Despite space charge broadening effects, elec- tron pulses shorter than 500 fs at sample position can be achieved. Technical details of this system and its characterisation as well as sample preparation techniques and analysis methods are described in detail in this work. Measurements on two members of the quasi-two-dimensional transition metal di- chalcogenides, namely 4Hb-TaSe2 and 1T-TaS2, are shown and discussed. Both show fast (subpicosecond) changes due to the suppression of the PLD and a rapid heating of the lattice. When the induced temperature rise heats the sample above a phase tran- sition temperature, a complete transformation into the new phase was observed. For 4Hb-TaSe2 we found that the recovery to the original state is significantly slower if the PLD was completely suppressed compared to only disturbing it. On 1T-TaS2 we could not only study the suppression of the original phase but also the formation of the higher energetic CDW phase. Long (100 ps) time constants were found for the tran- sition between the two phases. These suggest the presence of an energy barrier which has to be overcome in order to change the CDW phase. Pinning of the CDW by de- fects in the crystal structure result in such an energy barrier and consequently lead to a phase of domain growth which is considerably slower than pure electron or lattice dynamics.
AFRIKAANSE OPSOMMING: Dit is bekend dat lae-dimensionele materie fase oorgange ondergaan na anders ge- ori¨enteerde toestande wanneer afgekoel word tot laer temperature. Hierdie fases toon dikwels ’n periodiese modulasie van die elektron digtheid (genoem ’n “charge density wave” – CDW), tesame met ’n periodiese effek op die kristalrooster (genoem ’n “peri- odic lattice distortion” – PLD). Alhoewel baie eksperimente al uitgevoer is en al baie geleer is oor hierdie CDW fase, is die redes vir hul bestaan nog steeds nie ten volle verstaan nie. Baie prosesse, wat of sterk elektron–elektron of elektron–fonon interaksie toon, is al waargeneem en kan ’n rol speel in die verduideliking van die vorming van die verskillende fases onder verskillende omstandighede. Met die beskikbaarheid van femtosekonde lasers is dit nou moontlik om materie onder hoogs nie-ewewig voorwaardes te bestudeer. Deur skielik ’n bekende hoeveel- heid energie in die stelsel in te voer, word die ewewigstaat versteur en word die daar- opvolgende ontspanning prosesse waargeneem op die tydskaal van atomies struktu- rele en elektroniese bewiging. Hierdie eksperimente kan waardevolle inligting lewer oor die komplekse interaksies tussen die verskillende atomiese komponente van ge- kondenseerde materie, wat ontoeganklik sou wees onder ewewig voorwaardes. Ons gebruik elektrondiffraksie met tyd resolusie van onder ’n pikosekonde om die gedrag van ’n CDW stelsel te ondersoek nadat dit versteur is deur ’n kort laser puls. Van die waargenome veranderinge in die diffraksie patrone kan ons direk aflei watse veranderinge die kristalstruktuur van ons monster ondergaan. ’n Femtosekonde elektronendiffraksie opstelling is ontwikkel by die Lasernavors- ingsinstituut in Stellenbosch, Suid-Afrika. Kort laser pulse produseer foto-elektrone wat dan na ’n energie van 30 keV versnel word. Ten spyte van Coulomb afstoting ef- fekte, kan elektron pulse korter as 500 fs by die monster posisie bereik word. Tegniese besonderhede van hierdie opstelling, tegnieke van die voorbereiding van monsters asook analise metodes word volledig in hierdie tesis beskryf. Metings op twee voorbeelde van kwasi-tweedimensionele semi-metale, naamlik 4Hb-TaSe2 en 1T-TaS2, word gewys en bespreek. Beide wys ’n vinnige (subpikosekon- de) verandering as gevolg van die versteuring van die PLD en ’n vinnige verhitting van die kristalrooster. Wanneer die ge¨ınduseerde temperatuur bo die fase oorgang tempe- ratuur styg, is ’n volledige transformasie na die nuwe fase waargeneem. Vir 4Hb-TaSe2 het ons gevind dat die herstelling na die oorspronklike toestand aansienlik stadiger is as die PLD heeltemal viernietig is in vergelyking met as die PLD net versteur is. Met 1T-TaS2 kon ons nie net alleenlik die vernietiging van die oorspronklike fase sien nie, maar ook die vorming van ’n ho¨er energie CDW fase. Lang (100 ps) tydkonstante is gevind vir die oorgang tussen die twee fases. Hierdie dui op die teenwoordigheid van ’n energie-versperring wat eers oorkom moet word om die CDW fase voledig te ver- ander. Vaspenning van die CDW deur defekte in die kristalstruktuur veroorsaak so’n energie versperring en gevolglik lei dit tot ’n fase van groeiende CDW gebiede wat heelwat stadiger as pure elektron of kritalrooster dinamika is.
Chi, San-Hui. "Third-order nonlinear optical properties of conjugated polymers and blends." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31664.
Full textCommittee Chair: Perry, Joseph; Committee Member: Bunz, Uwe; Committee Member: Lyon, Andrew; Committee Member: Marder, Seth; Committee Member: Trebino, Rick. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Marshall, Ariel S. "Nonlinear optical characterization of organic polymers and small molecules and their application towards optical power limiting." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52334.
Full textBooks on the topic "Photo-induced charge"
Nolte, David D., and N. M. Haegel. Photo-Induced Space Charge Effects in Semiconductors: Electro-Optics, Photoconductivity, and the Photorefractive Effect : Symposium Held April 29-May (Materials Research Society symposium proceedings). Materials Research Society, 1992.
Find full textPhoto-induced space charge effects in semiconductors: Electro-optics, photoconductivity, and the photorefractive effect : symposium held April 29-May 1, 1992, San Francisco, California, U.S.A. Pittsburgh, Pa: Materials Research Society, 1992.
Find full textBook chapters on the topic "Photo-induced charge"
Dinse, K. P., M. Plüschau, G. Kroll, and H. van Willigen. "FT-ESR Investigation of Photo-Induced Charge Transfer in the ZnTeraphenylporhyrin/Duroquinone System." In 25th Congress Ampere on Magnetic Resonance and Related Phenomena, 604. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-76072-3_318.
Full textLi, Tong, Cherylyn Lee, and H. K. Hall. "The role of tetramethylene diradicals in photo-induced “charge-transfer” cycloadditions and copolymerization." In Synthesis/Mechanism/Polymer Drugs, 1–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/3-540-52834-2_1.
Full textWu, Xin-Ping, and Donald G. Truhlar. "Photo-induced Charge Separation and Photoredox Catalysis in Cerium-Based Metal–Organic Frameworks." In ACS Symposium Series, 309–26. Washington, DC: American Chemical Society, 2019. http://dx.doi.org/10.1021/bk-2019-1331.ch014.
Full textYanagisawa, Osami, Mitsuru Izumi, Wei-Zhi Hu, Kai-Hua Huang, Kenji Nakanishi, and Hideo Nojima. "Photo-Induced Effect on the Charge-Ordered State with Canted Antiferromagnetic Spin Order in Pr0.65Ca0.35MnO3." In Nano-Crystalline and Thin Film Magnetic Oxides, 263–68. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4493-3_20.
Full textIwai, S., S. Tanaka, K. Fujinuma, H. Kishida, H. Okamoto, and Y. Tokura. "Coherent valence fluctuation in photo-induced neutral-ionic transition of an one-dimensional charge transfer complex." In Ultrafast Phenomena XIII, 546–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-59319-2_170.
Full textKolobov, Alexander V., and Junji Tominaga. "Photo-Induced Change of the Phase State." In Chalcogenides, 123–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28705-3_6.
Full textde Freitas, L. F. "Photo-induced charge transfer." In Antimicrobial Photodynamic Inactivation and Antitumor Photodynamic Therapy with Fullerenes. IOP Publishing, 2016. http://dx.doi.org/10.1088/978-1-6817-4247-2ch4.
Full textGundlach, L. "Chemical Functionalization and Photo-Induced Charge Transport." In Encyclopedia of Interfacial Chemistry, 573–81. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-409547-2.13193-2.
Full text"Low Band-Gap Materials for Solar Cells." In Materials for Solar Cell Technologies I, 176–235. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901090-7.
Full text"Reaction Mechanism of Vinyl Polymerization with Amine in Redox and Photo-Induced Charge-Transfer Initiation Systems." In Handbook of Engineering Polymeric Materials, 241–56. CRC Press, 1997. http://dx.doi.org/10.1201/9781482292183-22.
Full textConference papers on the topic "Photo-induced charge"
Fausti, D., R. Tobey, N. Dean, S. Pyon, T. Takayama, H. Takagi, and A. Cavalleri. "Photo-induced Superconductivity in Charge Ordered LESCO (La1.8−xEr0.2SrxCuO4, x=0.125)." In International Conference on Ultrafast Phenomena. Washington, D.C.: OSA, 2010. http://dx.doi.org/10.1364/up.2010.mg4.
Full textHohkawa, Kohji, Chinami Kaneshiro, Keishin Koh, Kazumi Nishimuru, and Naoteru Shigekawa. "Study on Photo-induced Acoustic Charge Transport Effect in GaN Film." In 2005 IEEE MTT-S International Microwave Symposium. IEEE, 2005. http://dx.doi.org/10.1109/mtt67880.2005.9387930.
Full textKnorr, S., A. Grupp, M. Mehring, G. Grube, and F. Effenberger. "Photo-induced charge-transfer processes in fullerene-containing dyad and triad molecules." In ELECTRONIC PROPERTIES OF NOVEL MATERIALS--SCIENCE AND TECHNOLOGY OF MOLECULAR NANOSTRUCTURES. ASCE, 1999. http://dx.doi.org/10.1063/1.59776.
Full textDiikov, Alexei L. "Role of charge transfer states on photo-induced second-harmonic generation efficiency in glasses." In Second Iberoamerican Meeting on Optics, edited by Daniel Malacara-Hernandez, Sofia E. Acosta-Ortiz, Ramon Rodriguez-Vera, Zacarias Malacara, and Arquimedes A. Morales. SPIE, 1996. http://dx.doi.org/10.1117/12.231014.
Full textAllanche, T., V. Goiffon, S. Rizzolo, P. Paillet, O. Duhamel, A. Chabane, C. Muller, et al. "Analysis of X-Ray Photo-Charge Induced Speckles in a Radiation Hardened CMOS Image Sensor." In 2017 17th European Conference on Radiation and Its Effects on Components and Systems (RADECS). IEEE, 2017. http://dx.doi.org/10.1109/radecs.2017.8696152.
Full textAnderson, Dana Z. "Efficient Second-Harmonic Generation In Glass Fibers: The Possible Role Of Photo-Induced Charge Redistributiont." In 33rd Annual Techincal Symposium, edited by Howard R. Schlossberg and Raymond V. Wick. SPIE, 1990. http://dx.doi.org/10.1117/12.962157.
Full textTaur, Vidya S., Rajesh A. Joshi, and Ramphal Sharma. "Ag induced photo-generated charge trapping in nanostructured CdS/Cu2S thin film for photovoltaic applications." In SOLID STATE PHYSICS: Proceedings of the 56th DAE Solid State Physics Symposium 2011. AIP, 2012. http://dx.doi.org/10.1063/1.4710371.
Full textKroeze, Jessica E., Tom J. Savenije, and John M. Warman. "Photo-induced charge separation in TiO 2 /porphyrin bilayers studied by time-resolved microwave conductivity." In International Symposium on Optical Science and Technology, edited by Zakya H. Kafafi. SPIE, 2003. http://dx.doi.org/10.1117/12.452424.
Full textIwai, S., S. Tanaka, K. Fujinuma, H. Kishida, H. Okamoto, and Y. Tokura. "Coherent valence fluctuation in photo-induced neutral-ionic transition of an one-dimensional charge transfer complex." In International Conference on Ultrafast Phenomena. Washington, D.C.: OSA, 2002. http://dx.doi.org/10.1364/up.2002.me18.
Full textNITTA, Hitoshi, Masato SUZUKI, and Takeshi IIDA. "MULTISTABLE NATURES AND PHOTO-INDUCED CHARGE-SEPARATION IN HOLE-DOPED STATES OF STRONGLY COUPLED ELECTRON-PHONON SYSTEMS." In Proceedings of 2000 International Conference. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812811387_0080.
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