Directionally Aligned Amorphous Polymer Chains via Electrohydrodynamic-Jet Printing: Analysis of Morphology and Polymer Field-Effect Transistor Characteristics
SCIE
SCOPUS
- Title
- Directionally Aligned Amorphous Polymer Chains via Electrohydrodynamic-Jet Printing: Analysis of Morphology and Polymer Field-Effect Transistor Characteristics
- Authors
- Kim, Yebyeol; Bae, Jaehyun; Song, Hyun Woo; An, Tae Kyu; Kim, Se Hyun; Kim, Yun-Hi; Park, Chan Eon
- Date Issued
- 2017-11
- Publisher
- AMER CHEMICAL SOC
- Abstract
- Electrohydrodynamic-jet (EHD-jet) printing provides an opportunity to directly assembled amorphous polymer chains in the printed pattern. Herein, an EHD-jet printed amorphous polymer was employed as the active layer for fabrication of organic field-effect transistors (OFETs). Under optimized conditions, the field-effect mobility (mu(FET)) of the EHD-jet printed OFETs was 5 times higher than the highest mu(FET) observed in the spin-coated OFETs, and this improvement was achieved without the use of complex surface templating or additional pre- or post-deposition processing. As the chain alignment can be affected by the surface energy of the dielectric layer in EHD-jet printed OFETs, dielectric layers with varying wettability were examined. Near-edge X-ray absorption fine structure measurements were performed to compare the amorphous chain alignment in OFET active layers prepared by EHD-jet printing and spin coating.
- Keywords
- THIN-FILM TRANSISTORS; DIKETOPYRROLOPYRROLE-BASED COPOLYMER; CONJUGATED POLYMERS; CHARGE-TRANSPORT; DROPLET EVAPORATION; PATTERN-FORMATION; EFFECT MOBILITY; RESOLUTION; PENTACENE; SURFACE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/91990
- DOI
- 10.1021/acsami.7b04316
- ISSN
- 1944-8244
- Article Type
- Article
- Citation
- ACS Applied Materials & Interfaces, vol. 9, no. 45, page. 39493 - 39501, 2017-11
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