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Realization of Large‐Scale Polymer Solar Cells Using Ultrasonic Spray Technique Via Solvent Engineering (Solar RRL 7∕2018)
Author(s) -
Cheng Jiang,
Hu Rong,
Meng Xiang,
Li Ying,
Yan Xingwu,
Yang Xin,
Liao Xiaoqing,
Li Lu,
Pei Qibing,
Chong Kok Boon
Publication year - 2018
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.201870184
Subject(s) - materials science , realization (probability) , solar cell , solvent , polymer , energy conversion efficiency , ultrasonic sensor , process engineering , optoelectronics , chemical engineering , nanotechnology , composite material , chemistry , organic chemistry , engineering , acoustics , physics , statistics , mathematics
Reliability and reproducibility remain as main challenges in the realization of large‐scale polymer solar cells. In article no. 1800064 , Jiang Cheng, Lu Li and co‐workers demonstrate a smart method to prototyping high yield and largescale PTB7:PC 71 BM solar cells using ultrasonic spray coating. Marangoni‐effect related coffee‐rings and pin holes are successfully overcome via tuning the drying processes. The formation of PTB7‐enriched surface, confirmed in solvent engineering, led to an improved PTB7:PC 71 BM blend film, and the influence on the device characteristic performance was systematically studied. The power conversion efficiency of the device is improved to 8.23%, and the preparation of a large‐scale active area solar cell of 18 cm 2 with a maximum power output of 74.8 mW is demonstrated promising for industrial applications.