Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 27, Pages 10465-10469Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta02042a
Keywords
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Funding
- China Natural Science Foundation [21120102036, 91233201, 21276044]
- National Basic Research Program of China [2014CB239402]
- Swedish Energy Agency
- K&A Wallenberg Foundation
- State Key Laboratory of Fine Chemicals [KF0805]
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A D-pi-A type small molecule POZ4 and a A-pi-D-pi-A type small molecule POZ6, in which phenoxazine was used as the central building block and dicyanovinyl was employed as the electron-withdrawing end-group, have been designed and synthesized. Compared with D-pi-A type donor material POZ4, the donor material POZ6 with A-pi-D-pi-A configuration shows much wider response to solar light. An efficiency of 5.60% was obtained for the POZ6: PC71BM based solar cells, and the device fabricated with POZ6:PC71BM (1 : 1) showed a much better balanced hole and electron mobility of 2.24 x 10(-4) cm(2) V-1 s(-1) and 3.17 x 10(-4) cm(2) V-1 s(-1), respectively.
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