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Aggregation of ZnO Nanocrystallites for High Conversion Efficiency in Dye‐Sensitized Solar Cells
Author(s) -
Zhang Qifeng,
Chou Tammy P.,
Russo Bryan,
Jenekhe Samson A.,
Cao Guozhong
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200704919
Subject(s) - dye sensitized solar cell , crystallite , energy conversion efficiency , materials science , light scattering , solar cell , chemical engineering , scattering , optoelectronics , nanotechnology , chemistry , optics , metallurgy , electrolyte , engineering , physics , electrode
Here comes the sun : A conversion efficiency as high as 5.4 % has been achieved on dye‐sensitized ZnO solar cells with photoelectrode films consisting of polydisperse aggregates, compared to 2.4 % for the films with only nanosized crystallites. The aggregation of nanocrystallites with a broad size distribution is effective in enhancing the light‐harvesting efficiency by inducing light scattering within the photoelectrode films.