Solution-processable polymer solar cells from a poly(3-hexylthiophene)/[6, 6]-phenyl C61 -butyric acidmethyl ester concentration graded bilayers

Dong Hwan Wang, Hang Ken Lee, Dae Geun Choi, Jong Hyeok Park, O. Ok Park

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Abstract

Polymer photovoltaic (PV) device prepared with a vertical phase separation has intensified the research on the effectiveness of the concentration graded active layer. In this paper, a polymer PV device with a poly(3-hexylthiophene)/ [6,6]-phenyl C61 -butyric acidmethyl ester (P3HT/PCBM) bilayers active film with a concentration gradient has been fabricated via solution process. The concentration variation has been confirmed by the Auger spectroscopy. The devices showed an enhanced photocurrent density and power conversion efficiency compared to those of the bulk heterojunction PV prepared under the same fabrication condition.

Original languageEnglish
Article number043505
JournalApplied Physics Letters
Volume95
Issue number4
DOIs
Publication statusPublished - 2009 Aug 11

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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