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Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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Syntheses and Properties of Copolymers with N-Alkyl-2,2 '-bithiophene-3,3 '-dicarboximide Unit for Polymer Solar Cells

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Title
Syntheses and Properties of Copolymers with N-Alkyl-2,2 '-bithiophene-3,3 '-dicarboximide Unit for Polymer Solar Cells
Author
Kim, JuaeKim, Shin HyunKim, TaehyoShim, Joo YoungPark, DongkyungKim, JinwooKim, IlKim, Jin YoungSuh, Hongsuk
Issue Date
2015-09
Publisher
KOREAN CHEMICAL SOC
Citation
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.36, no.9, pp.2238 - 2246
Abstract
We report new random copolymers using the electron-deficient unit N-alkyl-2,2'-bithiophene-3,3'-dicarboximide (BTI) for organic solar cells. For absorption over a broader range of the solar spectrum, push-pull types of conjugated polymers PBTIBDT-3, PBTIBDT-5, and PBTIBDT-7, containing 4,8-bis(2-octyldodecyloxy) benzo[1,2-b; 3,4-b'] dithiophene (BDT) as electron-pushing unit and BTI as electron-pulling unit, were synthesized. The polymers were synthesized by coupling electron-pushing and electron-pulling units by Stille polymerization with Pd(0) catalyst. The incorporation of more BTI units induced more red shift of the absorption spectra of the polymer thin films. The device comprising PBTIBDT-5 and PC71BM (1:1) showed V-OC = 0.76 V, J(SC) = 3.28 mA/cm(2), and fill factor (FF) = 0.51, giving a power conversion efficiency of 1.26%
URI
https://scholarworks.unist.ac.kr/handle/201301/17346
URL
http://onlinelibrary.wiley.com/doi/10.1002/bkcs.10435/abstract
DOI
10.1002/bkcs.10435
ISSN
1229-5949
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