Effect of molecular weight on the properties and organic solar cell device performance of a donor–acceptor conjugated polymer
Literature Information
Publication Date
2015-02-04
DOI
10.1039/C4PY01631A
Impact Factor
5.582
Authors
Zeyun Xiao, Kuan Sun, Jegadesan Subbiah, Tianshi Qin, Shirong Lu, Balaji Purushothaman, David J. Jones, Wallace W. H. Wong
View Original
Abstract
Donor–acceptor conjugated polymers with 2-(2-ethylhexyl)-3-hexyl thienyl substituted benzo[1,2-b:4,5-b′]dithiophene (BDT) as donor building block and 5,6-difluorobenzo[c][1,2,5]thiadiazole as acceptor building block have been synthesized by Stille coupling polymerization. The polymerization conditions were optimized to achieve high molecular weight polymers (number-average molecular weight, Mn, up to 139 kg mol−1). The molecular weight dependent polymer properties were studied and compared. Photovoltaic applications of the polymers in bulk heterojunction (BHJ) solar cells revealed that the power conversion efficiency increased significantly (from 0.9% to 4.1%) as the Mn increased from 10 kg mol−1 to 73 kg mol−1 while further increase of the molecular weight had less influence on the solar cell performance.
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Source Journal
Polymer Chemistry
CiteScore:
8.6
Self-citation Rate:
7.3%
Articles per Year:
457
Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.
Recommended Compounds
4-(3-((4-Chloro-6-methoxyquinolin-7-yl)oxy)propyl)morpholine
CAS Number:
205448-32-4
Molecular Formula:
C17H21ClN2O3
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