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Indexed by:期刊论文

Date of Publication:2010-08-23

Journal:APPLIED PHYSICS LETTERS

Included Journals:SCIE、EI

Volume:97

Issue:8

ISSN No.:0003-6951

Key Words:anodes; organic compounds; solar cells; work function

Abstract:CuI is used to control the molecular orientation of copper phthalocyanine (CuPc) and modify the anodes in organic solar cells based on CuPc/C(60). By introducing a CuI buffer between indium tin oxide and CuPc, the power conversion efficiency is significantly enhanced by a factor of similar to 70%. Because of the strong interactions between the CuI and CuPc, the stacking orientation of CuPc molecules is changed, resulting in a similar to 65% increase in absorption coefficient, a larger carrier mobility and a smoother film surface. The anode work function is raised by the formation of a dipole layer. (C) 2010 American Institute of Physics. [doi:10.1063/1.3483159]