Broadband charge transfer dynamics in P3HT:PCBM blended film

Sheng Hsiung Chang, Chien Hung Chiang, Hsin Ming Cheng, Chao Yi Tai, Chun Guey Wu

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


Broadband exciton dynamics in P3HT:PCBM blended film was observed by the femtosecond time-resolved photoluminescence sum-frequency technique. Onsager-Braun theory is applied to analyze the distribution of charge transfer radius at different energy levels. In our evaluation, the optimal diameter of P3HT fiber is about 14.3 nm for achieving the best exciton dissociation in P3HT:PCBM blended films. This technique can be readily used in the optimization of high-efficiency organic photovoltaics.

Original languageEnglish
Pages (from-to)5342-5345
Number of pages4
JournalOptics Letters
Issue number24
StatePublished - 15 Dec 2013


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