New donor-acceptor copolymer containing dialkoxy naphthalene and carbonylated thieno[3,4-b]thiophene for OTFT and OPV
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- Title
- New donor-acceptor copolymer containing dialkoxy naphthalene and carbonylated thieno[3,4-b]thiophene for OTFT and OPV
- Authors
- Lee, GB; Kim, R; Cha, HJ; Park, CE; Kim, JH; Kim, YH
- Date Issued
- 2014-05
- Publisher
- POLYMER SOC KOREA
- Abstract
- A new copolymer (PONTET), composed of dialkoxy napthalene as donor and a carbonylated thieno [3,4-b]thiophene group as an acceptor, was obtained by Suzuki coupling polymerization. The number average molecular weight (M (n) ) of PONTET is 6.4 kg mol(-1) with a polydispersity index of 1.20, determined by gel permeation chromatography using chloroform. PONTET showed broad absorption with a maximum at 534 nm in solution and 618 nm in a thin film, respectively. The hole mobility of PONTET was 1.5x10(-3) cm(2)/Vs and the I (on) /I (off) ratio was 7.7x10(4). The maximum power conversion efficiency of a PONTET:PC70BM (1:4)-based solar cell reached 1.3% with an open circuit voltage (V (oc) ) of 0.56 V, a short circuit current density (J (sc) ) of 5.6 mA/cm(2), and a fill factor (FF) of 41.3%.
- Keywords
- carbonylated thieno[3,4-b]thiophene; dialkoxy naphthalene; OTFT; solar cell; THIN-FILM TRANSISTORS; FIELD-EFFECT TRANSISTORS; END-CAPPED ANTHRACENE; ORGANIC SOLAR-CELLS; PHOTOVOLTAIC CELLS; CONJUGATED POLYMERS; SEMICONDUCTORS; DERIVATIVES; EFFICIENCY
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14100
- DOI
- 10.1007/S13233-014-2068-Z
- ISSN
- 1598-5032
- Article Type
- Article
- Citation
- MACROMOLECULAR RESEARCH, vol. 22, no. 5, page. 569 - 573, 2014-05
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