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Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab (ATOMS)
Research Interests
  • Optoelectronic materials synthesis/organic electronics, functionalization of carbonaceous solids, advanced materials chemistry, macromolecular chemistry

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Photovoltaic performance of bifunctional low band gap conjugated copolymer

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Title
Photovoltaic performance of bifunctional low band gap conjugated copolymer
Author
Yun, Myoung HeeLee, JunghoonCho, ShinukYang, ChangdukKim, Jin Young
Keywords
Ambipolar; Bifunctional; Bifunctional materials; Bulk heterojunction; Charge balances; Conjugated copolymers; Low band gap; Photovoltaic performance; Solar cell performance
Issue Date
201203
Publisher
ELSEVIER SCIENCE BV
Citation
CURRENT APPLIED PHYSICS, v.12, no.2, pp.531 - 533
Abstract
We have investigated the bifunctional properties using ambipolar low band gap conjugated copolymer in organic bulk-heterojunction (BHJ) solar cells. Ambipolar copolymer, poly[3,6-dithien-2-yl-2,5-di(2-decyltetradecanyl)-pyrrolo[3,4-c]pyrrole-1,4-dione-5',5 ''-diyl-alt-benzo-2,1,3-thiadiazol-4,7-diyl] (PDT-DPP-alt-BTZ), successfully works as the bifunctional material acting as both donor or acceptor. However, because of fast recombination nature and broken charge balance of hole and electron, solar cell performances were significantly limited. The results indicate that having distinct role of each component might be better for the high performance BHJ solar cells rather than bifunctional property based on good charge transport properties of both hole and electrons.
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DOI
http://dx.doi.org/10.1016/j.cap.2011.08.015
ISSN
1567-1739
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