Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2010-08-23

Journal: APPLIED PHYSICS LETTERS

Included Journals: EI、SCIE

Volume: 97

Issue: 8

ISSN: 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]