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Organic photovoltaic cells with copper (Ⅱ) tetra-methyl substituted phthalocyanine

Xu Zongxiang ¹ ^* Roy V A L ²

文摘	Efficient heterojunction organic photovoltaic (OPV) cells are fabricated based on copper tetra-methyl phthalocyanine (CuMePc) as donor and fullerene (C_(60)) as acceptor. The power conversion efficiency of CuMePc/C_(60) OPV cell (2.52%) is increased by 88% compared with that of the non-peripheral substituted copper phthalocyanine (CuPc)/C60 OPV cell (1.34%). The introduction of methyl substituent leads to stronger π–π interaction of CuMePc (~ 3.5 A) than that of CuPc (~ 3.8 A). The efficiency improvement is attributed to the enhanced carrier mobility of CuMePc thin film (1.1×10~(-3) cm~2/V·s) and better film morphology by introducing methyl groups into the periphery of CuPc molecule.
来源	Chinese Physics. B ,2013,22(12):128505-1-128505-4 【核心库】
关键词	organic photovoltaic cell ; copper (Ⅱ) tetra-methyl substituted phthalocyanine ; π–π stacking ; GIXRD
地址	1. Department of Chemistry, South University of Science and Technology of China, Shenzhen, 518055 2. Center of Super Diamond and Advanced Films (COSDAF), Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, Kowloon
语种	英文
文献类型	研究性论文
ISSN	1674-1056
学科	物理学
基金	Project supported by the Special Funds for the Development of Strategic Emerging Industries in Shenzhen City, China ; Start-up Funding of the South University of Science and Technology of China ; the Strategic Research Grant of the City University of Hong Kong
文献收藏号	CSCD:5017293

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