Controlling the morphology of the active layer by using additives and its effect on bulk hetero-junction solar cell performance

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• 作者：Viet Hau Thanh Pham ; Nguyen Tam Nguyen Truong…
• 关键词：Organic Solar Cells ; Bulk Hetero ; junction ; 1 ; 2 ; Ethanedithiol ; 1 ; 8 ; Octanedithiol ; Additives
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：33
• 期：2
• 页码：678-682
• 全文大小：1,278 KB
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• 作者单位：Viet Hau Thanh Pham (1)
  Nguyen Tam Nguyen Truong (1)
  Thanh Kieu Trinh (1)
  Sang Hoon Lee (1)
  Chinho Park (1)
  
  1. School of Chemical Engineering, Yeungnam University, 280, Daehak-ro, Gyeongsan, 712-749, Korea
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Industrial Chemistry and Chemical Engineering
  Catalysis
  Materials Science
  Biotechnology
  
• 出版者：Springer New York
• ISSN：1975-7220

文摘

-Improvement of the surface roughness and power conversion efficiency (PCE) of bulk hetero-junction (BHJ) solar cells was made by the addition of organic additives for the cells based on a low energy-gap polymer, poly [2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b'] dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT), as an electron donor and [6,6]-phenyl C61 butyric acid methyl ester (PC61BM) as the electron acceptor. The PCPDTBT: PC61BM active layers were prepared by spin-coating process from four different organic solvents: pure chlorobenzene, chlorobenzene with 2.5 vol% 1,2-ethanedithiol (EDT) additive, chlorobenzene with 2.5 vol% 1,8-octanedithiol (ODT) additive, and chlorobenzene with a combination of 2.5 vol% EDT and 2.5 vol% ODT additives. The smoothest surface of the active layer, which was observed by AFM, was obtained in the case of PCPDTBT:PC61BM prepared with a combination of EDT and ODT additives in chlorobenzene, and a maximum PCE of 3.5% was achieved. Keywords Organic Solar Cells Bulk Hetero-junction 1,2-Ethanedithiol 1,8-Octanedithiol Additives