Efficient inverted organic solar cells without an electron selective layer

Jen Chun Wang, Cheng Yueh Lu, Jui Lin Hsu, Ming Kun Lee, Yun Ru Hong, Tsong Pyng Perng, Sheng Fu Horng*, Hsin-Fei Meng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Inverted organic solar cells which required no electron selective layer were fabricated and their power conversion efficiency was found to improve irreversibly from 1.46% to 4.10% with post-processing light soaking for 2 hours. X-Ray photoelectron spectroscopy characterization revealed further segregation in surface composition at the interface and was found to explain the current density-voltage measurements. In addition, the light soaked devices were found to exhibit extended lifetime as compared to conventional devices. Since no electron selective layer was required, light soaking may be considered as a cost-effective method to achieve efficient inverted organic solar cells.

Original languageEnglish
Pages (from-to)5723-5728
Number of pages6
JournalJournal of Materials Chemistry
Issue number15
StatePublished - 21 Apr 2011

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