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Markus Koppe, Hans-Joachim Egelhaaf, Gilles Dennler, Markus C. Scharber, Christoph J. Brabec, Pavel Schilinsky and Claudia N. Hoth Near IR Sensitization of Organic Bulk Heterojunction Solar Cells: Towards Optimization of the Spectral Response of Organic Solar Cells Advanced Functional Materials 20

Version of Record online: 14 DEC 2009 | DOI: 10.1002/adfm.200901473

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The spectroscopic response of a P3HT/PCBM-based bulk-heterojunction solar cell is extended into the near infrared region of the spectrum by adding the low bandgap polymer poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b´]-dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCPDTBT) to the blend. The dominant photoinduced charge transfer mechanisms are studied.

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