Soluble N-Type organic thin-film transistors with enhanced electrical characteristics
- Authors
- Lee, Ho Won; Lee, Seok Jae; Koo, Ja Ryong; Cho, Eou Sik; Kwon, Sang Jik; Kim, Woo Young; Park, Jaehoon; Kim, Young Kwan
- Issue Date
- Nov-2013
- Publisher
- KOREAN INST METALS MATERIALS
- Keywords
- OTFT; PCBM; c-PVP organic buffer layer; drop-casting; hysteresis
- Citation
- ELECTRONIC MATERIALS LETTERS, v.9, no.6, pp.865 - 869
- Journal Title
- ELECTRONIC MATERIALS LETTERS
- Volume
- 9
- Number
- 6
- Start Page
- 865
- End Page
- 869
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/14166
- DOI
- 10.1007/s13391-013-6031-5
- ISSN
- 1738-8090
- Abstract
- We fabricated and investigated soluble, organic, thin-film transistors (OTFTs) containing '[6, 6]-phenyl-C61-butyric acid methyl ester (PCBM)' as a semiconducting layer, and an organic dielectric buffer (cross-linked poly-4-vinylphenol) as a dielectric buffer-layer to improve electrical characteristics. The semiconducting layer of the devices was fabricated by the drop-casting method where PCBM was dissolved in three different solvents (odichlorobenzene, chloroform, and chlorobenzene). From the transfer and output characteristics of the PCBM OTFTs, a threshold voltage of 10 V, sub-threshold slope of 10 V/dec, on/off current ratio of 7.305 x 10(3), and field-effect mobility of 1.53 x 10(-2) cm(2)/Vs were obtained; for PCBM using o-dichlorobenzene solvent and an organic dielectric buffer layer. It was also found that the hysteresis for the same device was improved conspicuously compared to the other devices, by the above-mentioned condition.
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