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Molecular Design to Improve the Performance of Donor–π Acceptor Near‐IR Organic Dye‐Sensitized Solar Cells
Author(s) -
Hao Yan,
Yang Xichuan,
Zhou Meizhen,
Cong Jiayan,
Wang Xiuna,
Hagfeldt Anders,
Sun Licheng
Publication year - 2011
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201100350
Subject(s) - acceptor , organic solar cell , electron acceptor , photochemistry , chemistry , materials science , nanotechnology , organic chemistry , physics , polymer , condensed matter physics
Near‐dye experience: Long, flexible carbon chains in the lateral anchoring groups of the donor part of a donor–π acceptor organic dye increase the power conversion efficiency dramatically. This performance enhancement can be ascribed to the prevention of the formation of molecular aggregates on the semiconductor nanoparticles, resulting in a lower recombination rate between transported electrons and I 3 − ions. A cell based on the new dye, HY113, gives a maximum IPCE value of 93 % at 660 nm.