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Small‐Molecule Solar Cells with Fill Factors up to 0.75 via a Layer‐by‐Layer Solution Process
Author(s) -
Lin Yuze,
Ma Lanchao,
Li Yongfang,
Liu Yunqi,
Zhu Daoben,
Zhan Xiaowei
Publication year - 2014
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201300626
Subject(s) - materials science , energy conversion efficiency , fullerene , layer (electronics) , molecule , solution process , chemical engineering , active layer , layer by layer , organic solar cell , small molecule , optoelectronics , nanotechnology , composite material , organic chemistry , chemistry , polymer , biochemistry , engineering , thin film transistor
An oligothiophene‐based molecule (BDT‐3T‐CA) using a molecular engineering approach is applied to solution‐processed layer‐by‐layer solar cells. The solar cells based on BDT‐3T‐CA/PC 61 BM (a fullerene derivative) exhibit power conversion efficiency (PCE) values as high as 4.16% and fill factor (FF) values up to 0.75. The FF of 0.75 is the highest value reported for solution processed small molecule solar cells.