標題: Fine Tuning of HOMO Energy Levels for Low-Band-Gap Photovoltaic Copolymers Containing Cyclopentadithienopyrrole and Bithiazole Units
作者: Patra, Dhananjaya
Sahu, Duryodhan
Padhy, Harihara
Kekuda, Dhananjay
Chu, Chih-Wei
Wei, Kung-Hwa
Lin, Hong-Cheu
材料科學與工程學系
光電工程學系
Department of Materials Science and Engineering
Department of Photonics
關鍵字: bithiazoles;conjugated polymers;dithienopyrroles;low bandgaps;synthesis
公開日期: 15-九月-2011
摘要: Five conjugated LBG polymers P1-P5 consisting of a DTP unit as an electron donor and various bithiazole units as electron acceptors are designed and synthesized for photovoltaic applications. The effects of the electron-deficient bithiazole derivatives on the thermal, optical, electrochemical, and photovoltaic properties are investigated. The molecular structures are confirmed and characterized. The resulting polymers have high thermal stabilities and broad absorption bands with low optical bandgaps. The hole and electron mobilities are calculated. PSC devices are fabricated utilizing the polymers as electron donors and PCBM as an electron acceptor. The PSC device with an active layer of P4:PCBM (1:1 by weight) exhibits the best power-conversion efficiency.
URI: http://dx.doi.org/10.1002/macp.201100164
http://hdl.handle.net/11536/19115
ISSN: 1022-1352
DOI: 10.1002/macp.201100164
期刊: MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume: 212
Issue: 18
起始頁: 1960
結束頁: 1970
顯示於類別:期刊論文


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