한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)
- 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
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- Pages.392.1-392.1
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- 2014
Enhanced Performance in Isoindigo Based Organic Small Molecules Field Effect Transistors Using Solvent Additives
- Park, Yu-Jeong (Department of Materials Physics, Dong-A University) ;
- Jo, Sin-Uk (Department of Materials Physics and EHSRC, University of Ulsan) ;
- Seo, Jeong-Hwa (Department of Materials Physics, Dong-A University)
- 발행 : 2014.02.10
초록
Isoindigo based small molecules have attracted much attention in the field of optoelectronic devices due to their broad absorbance and high charge carrier mobilitiies. Herein, we investigate the field effect transistor characteristics of a series of isoindigo based donor-acceptor-donor (D-A-D) small molecules containing a variable number of thiophene moieties (named IDT, ID2T, and ID3T) which form pi-bridges between the D and A moieites and a different donor moiety (IDED). In order to improve the carrier mobility, 1-chloronaphthalene (CN) and 1,8-diiodooctane (DIO) as solvent additives were used. The film morphology, crystallinity and optical properties of the materials processed with various concentrations of solvent additives were investigated through atomic force microscopy (AFM), X-ray diffraction (XRD) and UV-vis absorption spectroscopy.