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Polymers 2014, 6(2), 382-407; doi:10.3390/polym6020382

Development of Polymer Acceptors for Organic Photovoltaic Cells

Department of Chemistry, Kyonggi University, San 94-6, Iui-dong, Yeongtong-gu, Suwon-si, Gyeonggi 443-760, Korea
* Author to whom correspondence should be addressed.
Received: 15 January 2014 / Revised: 6 February 2014 / Accepted: 7 February 2014 / Published: 10 February 2014
(This article belongs to the Special Issue Semiconducting Polymers for Organic Electronic Devices)
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This review provides a current status report of the various n-type polymer acceptors for use as active materials in organic photovoltaic cells (OPVs). The polymer acceptors are divided into four categories. The first section of this review focuses on rylene diimide-based polymers, including perylene diimide, naphthalene diimide, and dithienocoronene diimide-based polymers. The high electron mobility and good stability of rylene diimides make them suitable for use as polymer acceptors in OPVs. The second section deals with fluorene and benzothiadiazole-based polymers such as poly(9,9’-dioctylfluorene-co-benzothiadiazole), and the ensuing section focuses on the cyano-substituted polymer acceptors. Cyano-poly(phenylenevinylene) and poly(3-cyano-4-hexylthiophene) have been used as acceptors in OPVs and exhibit high electron affinity arising from the electron-withdrawing cyano groups in the vinylene group of poly(phenylenevinylene) or the thiophene ring of polythiophene. Lastly, a number of other electron-deficient groups such as thiazole, diketopyrrolopyrrole, and oxadiazole have also been introduced onto polymer backbones to induce n-type characteristics in the polymer. Since the first report on all-polymer solar cells in 1995, the best power conversion efficiency obtained with these devices to date has been 3.45%. The overall trend in the development of n-type polymer acceptors is presented in this review.
Keywords: polymer acceptors; organic photovoltaic cells; all-polymer solar cells polymer acceptors; organic photovoltaic cells; all-polymer solar cells
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Kim, Y.; Lim, E. Development of Polymer Acceptors for Organic Photovoltaic Cells. Polymers 2014, 6, 382-407.

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