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- Title
Optimization of Polymer Solar Cells Based on the Conjugated Copolymer of Poly(phenylenevinylene- alt-4,7-diphenyl-2,1,3-benzothiadiazole) (PP-DBT).
- Authors
Liu, Leijing; Pei, Jianing; Wen, Shanpeng; Li, Jiyang; Yao, Bin; Tian, Wenjing
- Abstract
Polymer solar cells based on poly(phenylenevinylene- alt-4,7-diphenyl-2,1,3-benzothiadiazole) (PP-DBT):[6,6]-phenyl C71 butyric acid methyl-ester (PC71BM) blend films are optimized. The results show that the solar cell has a better performance at a 1:4 blend ratio than at 1:1, 1:2, 1:3, and 1:5 blend ratios, due to the higher hole mobility of active layer and the optimized morphology. The device prepared from chlorobenzene (CB) has a higher power conversion efficiency (PCE) than the devices prepared from chloroform and o-dichlorobenzene, because the former has a much higher short-circuit current density ( Jsc) resulting from the morphology with proper phase separation. The solar cell modified with two layers of ZnO nanocrystals achieves the best performance with an open-circuit voltage of 0.9 V, a Jsc of 7.46 mW cm−2, fill factor (FF) of 0.50, and PCE of 3.36%.
- Subjects
SOLAR cell efficiency; CONJUGATED polymers synthesis; CHLOROFORM spectra; DICHLOROBENZENE; NANOCRYSTAL synthesis; CURRENT density (Electromagnetism)
- Publication
Macromolecular Chemistry & Physics, 2013, Vol 214, Issue 16, p1836
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201300291