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How High Local Charge Carrier Mobility and an Energy Cascade in a Three‐Phase Bulk Heterojunction Enable >90% Quantum Efficiency
Author(s) -
Burke Timothy M.,
McGehee Michael D.
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201304241
Subject(s) - charge (physics) , charge carrier , cascade , materials science , heterojunction , work (physics) , kinetic energy , electron mobility , engineering physics , optoelectronics , chemical physics , physics , chemistry , quantum mechanics , chromatography
Charge generation in champion organic solar cells is highly efficient in spite of low bulk charge‐carrier mobilities and short geminate‐pair lifetimes. In this work, kinetic Monte Carlo simulations are used to understand efficient charge generation in terms of experimentally measured high local charge‐carrier mobilities and energy cascades due to molecular mixing.