Journal
ORGANIC ELECTRONICS
Volume 11, Issue 11, Pages 1772-1778Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2010.08.004
Keywords
Bulk-heterojunction solar cell; Low band-gap polymer; Poly(thienylenevinylene)
Funding
- Ministry of Education, Science and Technology (MEST) of Korea
- Korean Government (MEST) [NRF-2009-C1AAA001-2009-0092950]
- NCRC [R15-2008-006-02001-0]
- Korea Ministry of Knowledge Economy (MKE) [2008-N-PV08-P-01]
- GIST through MEST [R31-20008-000-10026-0]
- BioImaging Research Center at GIST
- Heeger Center for Advanced Materials (HCAM)
- Ministry of Education, Science & Technology (MoST), Republic of Korea [gist-06] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2008-0062150, 2009-0093035] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A new thienylenevinylene-benzothiadiazole copolymer, poly{1,2-(E)-bis[2-(5-bromo-3-dodecyl-2-thienyl)-5-thienyl]ethene-2,1,3-benzothiadiazole} (PETVTBT), was synthesized and characterized for potential use in solar cells. The polymer had broad absorption over the entire visible region and a low band gap of 1.57 eV. In addition, the polymer had a relatively low HOMO level of about 5.1 eV. Although PETVTBT was a donor-acceptor-type copolymer, the hole mobility reached 0.025 cm(2)/V s using field-effect transistors. Bulk-heterojunction solar cells that used a PETVTBT: PC[71]BM blend as the active layer showed a power conversion efficiency of 1.0% under a simulated AM 1.5 G solar irradiation at 100 mW/cm(2). (C) 2010 Elsevier B.V. All rights reserved.
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