发光学报, 2017, 38 (10): 1314, 网络出版: 2017-10-17
非对称结构诱导取向生长的有机半导体薄膜
Directional Growth of Organic Semiconductor Film on Asymmetric Structures
摘要
采用非对称立体结构, 利用其表面在微米尺度范围上存在的表面曲率变化及其各向异性的梯度特征, 作用于喷墨打印在结构上方的TIPS-并五苯前驱体溶液表面, 形成不对称的液体表面张力分布, 从而驱动有机半导体发生取向生长。基于这种非对称立体结构制备了有机薄膜晶体管(OTFT)阵列, 其平均迁移率提升了近40%, 同时迁移率的变异系数由68%减小到39%。
Abstract
Asymmetric structures were designed and fabricated featured with differential surface curvature across the microscale profiles and the characteristic anisotropic gradient. TIPS-pentacene was deposited over the profile via a solution precursor and directional crystallization is achieved owing to the asymmetric surface energy distribution across the surface of the liquid. With the semiconductor layer printed via this method, the average mobility of an arrayed organic thin-film transistors (OTFTs) was increased by 40% while the coefficient of variation (CV) was reduced from 68% to 39%.
王向华, 顾勋, 张春雨, 李博, 吕申宸. 非对称结构诱导取向生长的有机半导体薄膜[J]. 发光学报, 2017, 38(10): 1314. WANG Xiang-hua, GU Xun, ZHANG Chun-yu, LI Bo, LYU Shen-chen. Directional Growth of Organic Semiconductor Film on Asymmetric Structures[J]. Chinese Journal of Luminescence, 2017, 38(10): 1314.