期刊
ORGANIC ELECTRONICS
卷 13, 期 4, 页码 570-578出版社
ELSEVIER
DOI: 10.1016/j.orgel.2011.12.020
关键词
Processing additives; Fullerene derivatives; Field-effect transistors; Polymer solar cells; Nano-scale morphology
资金
- Basic Science Research Program [2011-0009148]
- National Research Foundation of Korea (NRF) [2009-0093818]
- Ministry of Education, Science and Technology (MEST) [2011-0000247]
- Information Display R D Center [F0004012-2011-34]
- Ministry of Knowledge Economy of Korean
- NSF [DMR-1121053]
- NRF
- Korea Evaluation Institute of Industrial Technology (KEIT) [F0004020-2011-34] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Council of Science & Technology (NST), Republic of Korea [B551179-09-06-00] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [핵06B1311, 2011-0009148, 2009-0081096, 2009-0093818] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The effects of processing additive on fullerene aggregation in polymer BHJ solar cells were investigated using new fullerene derivatives bearing a thiophene moiety and alkyl groups. Although new fullerene derivatives showed quite similar electronic transport properties in field-effect transistors, the photovoltaic performances were significantly limited by their aggregative nature. Processing with 1% CN additive, however, changed the aggregated morphology of BHJ films to a smoother and homogeneous morphology, improving photovoltaic performance. The result indicates that processing additive not only influences on polymer side, but also significantly affects fullerene acceptor component. (c) 2012 Elsevier B.V. All rights reserved.
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