Journal
CURRENT APPLIED PHYSICS
Volume 11, Issue 2, Pages E44-E48Publisher
ELSEVIER
DOI: 10.1016/j.cap.2010.11.121
Keywords
Organic photovoltaics; Organic thin-film transistors; Fullerene derivatives; Solution-processing
Funding
- Ministry of Knowledge Economy [M2007010004]
- MEST [2010-0000499]
- Korea National Research Foundation [NRF-2009-0076833]
- Korea Institute of Industrial Technology(KITECH) [M2007010004] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Two solution-processable fullerene derivatives (C60TH-Hx and C60TH-Hx-a) were successfully synthesized for organic photovoltaics and n-type thin-film transistors. The best power conversion efficiency (PCE) was observed in a layered structure of P3HT:C60TH-Hx (PCE = 2.44%), which slightly exceeded that of P3HT:PCBM (PCE = 2.39%). We found a very low PCE for P3HT:C60TH-Hx-a (similar to 0.14%) due to the poor solubility of C60TH-Hx-a. In addition, n-type thin-film transistors were fabricated by solution-processing techniques. The measured values of electron mobility in the devices for PCBM, C60TH-Hx, and C60TH-Hx-a were 5.8 x 10(-3), 2.5 x 10(-2), and 8.5 x 10(-4) cm(2) V-1 s(-1), respectively. (C) 2011 Elsevier B. V. All rights reserved.
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