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11 November 2016 Charge-recombination processes in organic solar cells: the impact of charge-transfer states (Conference Presentation)
Veaceslav Coropceanu
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Proceedings Volume 9923, Physical Chemistry of Interfaces and Nanomaterials XV; 992306 (2016) https://doi.org/10.1117/12.2237668
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States
Abstract
We study the role of electron-vibration coupling, electronic polarization, molecular packing, system size and electron delocalization on the nature of the charge-transfer states in model donor-acceptor systems. The morphologies we consider range from a bilayer with flat interface to a bilayer with rough interface and bulk heterojunctions with coarse and fine intercalated domains of donor and acceptor molecules. The implications of the charge-transfer states, active material morphology, density of states and charge carrier concentration on non-geminate recombination kinetics is investigated by means of a three-dimensional reaction-diffusion lattice model with the charge carrier hopping rate described by the Miller-Abrahams formalism.
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Veaceslav Coropceanu "Charge-recombination processes in organic solar cells: the impact of charge-transfer states (Conference Presentation)", Proc. SPIE 9923, Physical Chemistry of Interfaces and Nanomaterials XV, 992306 (11 November 2016); https://doi.org/10.1117/12.2237668
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KEYWORDS
Interfaces
3D modeling
Organic photovoltaics
Solar cells
Systems modeling
Heterojunctions
Molecular electronics
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