Journal
ORGANIC ELECTRONICS
Volume 14, Issue 6, Pages 1510-1515Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2013.03.018
Keywords
Polymer solar cells; Diketopyrrolopyrrole; Bulk heterojunction; Donor-acceptor
Funding
- Major Program for cultivation of the National Natural Science Foundation of China [91233112]
- National Natural Science Foundation of China [21172187, 51273168, 20102139]
- Innovation Group and Xiangtan Joint Project of Hunan Natural Science Foundation [12JJ7002, 12JJ8001]
- Scientific Research Fund of Hunan Provincial Education Department [10A119, 11CY023, 12B123]
- Hunan Postgraduate Science Foundation for Innovation, Hunan province college students study and innovation experimental program [CX2011B263]
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A new donor-acceptor-donor ternary copolymer PTh-BDT-2DTDPP was synthesized and characterized, in which two diketopyrrolopyrrole units were simultaneously incorporated into the side and main chains. Its thermal, photophysical and electrochemical properties, as well as morphology in a blending film were investigated. The bulk heterojunction polymer solar cells were made with a configuration of ITO/PEDOT:PSS/PTh-BDT-2DTDPP:PC61BM/LiF/Al. A maximum power conversion efficiency of 4.36% with a high open-circuit voltage of 0.78 V, a short-circuit current of 10.47 mA cm (2) and a fill factor of 53.0% was achieved in the cells under the illumination of AM 1.5, 100mWcm (2). (C) 2013 Elsevier B. V. All rights reserved.
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