Polymer Bi-layer Gate Dielectric for Flexible Organic Thin Film Transistors
In this work, a type of bi-layer polymer dielectric composed of polyacrylonitrile (PAN) and polystyrene (PS) is proposed for flexible OTFTs. To demonstrate the performance of the bi-layer dielectric material, staggered structure OTFTs with thermal evaporated pentacene as the active layer are fabricated. It can be seen that the surface morphology of PAN/PS bilayer dielectric is much smoother than that of the pure PAN. As a result, the OTFTs based on the PAN/PS bilayer dielectric present higher mobility and higher ON/OFF current ratio. The devices also show excellent switching and bending stability. The experimental results prove that the proposed polymer bi-layer dielectric can be applied in OTFTs for flexible display backplane applications.
organic thin-film transistor (OTFT) flexible display polymer gate dielectric
Q. Cui Y. Guo P. He X. Guo Y. Liu
Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China Dong Ch Beijing National Laboratory for molecular Science, Key Laboratory of Organic Solids,Institute of Che
国际会议
China Display/Asia Display 2011(2011年中国显示/亚洲显示会议)
江苏昆山
英文
601-603
2011-11-07（万方平台首次上网日期，不代表论文的发表时间）