Synthesis and Characterization of a Narrow-Bandgap Polymer Containing Alternating Cyclopentadithiophene and Diketo-Pyrrolo-Pyrrole Units for Solar Cell Applications

Title:	Synthesis and Characterization of a Narrow-Bandgap Polymer Containing Alternating Cyclopentadithiophene and Diketo-Pyrrolo-Pyrrole Units for Solar Cell Applications
Authors:	Chen, Guan-Yu Chiang, Chien-Ming Kekuda, Dhananjay Lan, Shang-Che Chu, Chih-Wei Wei, Kung-Hwa 材料科學與工程學系光電工程學系 Department of Materials Science and Engineering Department of Photonics
Keywords:	conjugated polymers;copolymerization;diketo-pyrrolo-pyrrole;heteroatom-containing polymers;solar cell
Issue Date:	1-Apr-2010
Abstract:	We have synthesized a narrow-bandgap conjugated polymer (PCTDPP) containing alternating cyclopentadithiophene (CT) and diketo-pyrrolo-pyrrole (DPP) units by Suzuki coupling. This PCTDPP exhibits a low band gap of 1.31 eV and a broad absorption band from 350 to 1000 nm, which allows it to absorb more available photons from sunlight. A bulk hetero-junction polymer solar cell incorporating PCTDPP and C(70) at a blend ratio of 1:3 exhibited a high short-circuit current of 10.87 mA/cm(2) and a power conversion efficiency of 2.27%. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 1669-1675,2010
URI:	http://dx.doi.org/10.1002/pola.23931 http://hdl.handle.net/11536/5558
ISSN:	0887-624X
DOI:	10.1002/pola.23931
Journal:	JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume:	48
Issue:	7
Begin Page:	1669
End Page:	1675
Appears in Collections:	Articles

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