期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 153, 期 -, 页码 63-71出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2014.12.035
关键词
Electronic materials; Interfaces; Organic compounds; Polymers; Semiconductors; Electrical properties
资金
- National Research Foundation of Korea (NRF) - Korean government (MSIP) [NRF-2014R1A2A1A05004993, 2012R1A2A2A06047047]
- Center for Advanced Soft-Electronics - Ministry of Science, ICT and Future Planning as Global Frontier Project [2012M3A6A5055225, 2011-0031639]
- National Research Foundation of Korea [2012R1A2A2A06047047] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Two p-type polymers, PONDPP and PTADPP were synthesized by Suzuki coupling reaction to investigate the effect of alkoxy aromatic donor units in diketopyrrolopyrrole (DPP)-based copolymers on OTFTs and OPVs. PONDPP containing dialkoxynaphthalene exhibits excellent field-effect performances, with a hole mobility of 0.324 cm(2)/V while PTADPP containing dialkoxyanthracene exhibits mobility of 4.5 x 10(-3) cm(2)/V at 200 degrees C annealing. Bulk heterojunction type polymer solar cells based on these polymers as the electron donor materials, with PC71BM as the acceptor, showed maximum power conversion efficiency (PCE) of 0.9% for PONDPP and 1.1% for PTADPP under AM 1.5 illumination. From photophysical and structural studies, we found that naphthalene unit was introduced to the DPP unit to enhance more the molecular ordering compared to anthracene unit. (C) 2014 Elsevier B.V. All rights reserved.
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