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Bulk Heterojunction Solar Cells with Large Open‐Circuit Voltage: Electron Transfer with Small Donor‐Acceptor Energy Offset
Author(s) -
Gong Xiong,
Tong Minghong,
Brunetti Fulvio G.,
Seo Junghwa,
Sun Yanming,
Moses Daniel,
Wudl Fred,
Heeger Alan J.
Publication year - 2011
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.201003768
Subject(s) - materials science , open circuit voltage , heterojunction , polymer solar cell , hybrid solar cell , optoelectronics , band offset , band gap , solar cell , acceptor , polymer , organic solar cell , electron , electron acceptor , voltage , photochemistry , condensed matter physics , valence band , chemistry , physics , composite material , quantum mechanics
Photoinduced electron transfer is observed in polymer bulk heterojunction solar cells with very small interfacial energy offset. The results imply that open circuit voltage values close to the band gap of the semiconducting polymer should be possible for polymer bulk heterojunction solar cells just as for inorganic solar cells.