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

Xu, Z.-X. and Roy, V.A.L. (2013) Organic photovoltaic cells with copper (II) tetra-methyl substituted phthalocyanine. Chinese Physics B, 22(12), 128505. (doi: 10.1088/1674-1056/22/12/128505)

Abstract

Efficient heterojunction organic photovoltaic (OPV) cells are fabricated based on copper tetra-methyl phthalocyanine (CuMePc) as donor and fullerene (C60) as acceptor. The power conversion efficiency of CuMePc/C60 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 Å) than that of CuPc (~ 3.8 Å). The efficiency improvement is attributed to the enhanced carrier mobility of CuMePc thin film (1.1 × 10−3 cm2/Vcenterdots) and better film morphology by introducing methyl groups into the periphery of CuPc molecule.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Vellaisamy, Professor Roy
• Authors: Xu, Z.-X., and Roy, V.A.L.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Chinese Physics B
• Publisher: IOP Publishing
• ISSN: 1674-1056