Efficiency enhancement of organic photovoltaic devices using a Sm:Al compound electrode

Bin Bin Yang, Dan Dan Zhang*, Shuit Tong Lee, Yan Qing Li, Jian Xin Tang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

An effective cathode consisting of samarium (Sm) doped aluminum (Al) layer and a pure Al layer is reported for application in organic photovoltaic cells (OPVs). Standard copper phthalocyanine (CuPc)/C60 OPVs using this bilayer cathode show dramatically increased short-circuit current density and power conversion efficiency, which are 64% increased by employing a appropriate ratio of 1:3 of Sm:Al layer as compared with that of control devices with pure Al cathode. The photoelectric properties reveal that the improved efficiency is mainly related to the balance of the enhanced electron collection ability and the optimized optical reflection of a Sm doped Al layer.

Original languageEnglish
Article number073301
JournalApplied Physics Letters
Volume102
Issue number7
DOIs
StatePublished - 18 Feb 2013
Externally publishedYes

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