The effect of processing solvent dependent film aggregation on the photovoltaic performance of squaraine:PC71BM bulk heterojunction solar cells |
| |
| Affiliation: | 1. Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, Yanchang Road 149, Shanghai, 200072, China;2. Department of Organic Device Engineering, Graduate School of Engineering, Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan;3. Flat Panel Display, Apple Inc, Cupertino, CA 95014, United States;1. Group for Nano-Photonics Convergence Technology, Korea Institute of Industrial Technology, Gwangju, 61012, South Korea;2. Division of Microelectronics and Display Technology, Wonkwang University, Iksan, 54538, South Korea;1. Department of Chemistry, South University of Science and Technology of China, Shen Zhen, Guangdong, 518000, PR China;2. Department of Physics and Materials Science, City University of Hong Kong, Hong Kong Special Administrative Region;1. State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun, 130033, People''s Republic of China;2. University of Chinese Academy of Sciences, Beijing, 100039, People''s Republic of China;3. Center of Super-Diamond and Advanced Films (COSDAF), Department of Physics and Materials Sciences, City University of Hong Kong, Hong Kong Special Administrative Region;1. National Engineering Lab for TFT-LCD Materials and Technologies, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China;2. Guangdong Aglaia Optoelectronic Materials Co., Ltd., Shunde, Foshan, Guangdong, People’s Republic of China;1. School of Chemical Engineering and Materials Science, Chung-Ang University, 221 Heukseok-dong, Dongjak-gu, Seoul 156-756, Republic of Korea;2. Institute for Rare Metals & Division of Advanced Materials Engineering, Kongju National University, Cheonan, Chungnam 330-717, Republic of Korea;3. Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Republic of Korea |
| |
| Abstract: | In this work, we systemically investigated the processing solvent-dependent aggregation behavior of a squaraine dye, 2,4-bis4-(N,N-dibutylamino)-2,6- dihydroxyphenyl] squaraine (DBSQ), in a DBSQ: 6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) blend film, as well as the aggregation effect on the photovoltaic performance of DBSQ:PC71BM bulk heterojunctions (BHJs). Our finding shows that the aggregation behavior of DBSQ dye in the blend film can be controlled via the proper selection of the processing solvents. For a J-aggregate (head-to-tail molecule alignment) DBSQ:PC71BM active layer based BHJ cells, a power conversion efficiency (PCE) of over 5% can be obtained, which is 75% higher than that of the H-aggregate (parallel molecule packing) active layer based BHJ cells. Our results indicate that the processing solvent controlled J-aggregation formation shall be considered as effective approach to tune the optical and electrical properties of thin films for high-performance BHJ solar cells. |
| |
| Keywords: | Organic solar cell Squaraine dye Film aggregation Photovoltaic performance Processing solvent |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
