电子元件与材料2025，Vol.44Issue(4)：363-367,5.DOI:10.14106/j.cnki.1001-2028.2025.1386
光照调控有机薄膜形貌及其晶体管性能
Controlling organic film morphology and its transistors performance by illumination
摘要
Abstract
Organic field-effect transistors(OFETs)have received extensive attention in the fields of photodetectors,memory and synaptic devices due to their advantages of low-cost,large-area fabrication and low-temperature solution processing.However,compared with silicon-based transistor,the OFETs suffer from relatively low device performance,which is mainly due to the low inherent carrier mobility of organic semiconductor materials and their susceptible to water,oxygen and light conditions.Here an innovative method was proposed to control the morphology of blend films and their device performance by illumination during films formation.The results demonstrate that light illumination can effectively tune the thermal dynamic interaction between semiconductor and insulating polymer in the blend film.With increased light intensity,semiconductor/insulating polymer blend films show more significant phase-separation,higher domain purity and larger domain size,which greatly promote the charge transport and modulation in the channel.The experimental results show that the OFETs prepared under 150 mW/cm2 illumination have the best performance with a high mobility of about 0.42 cm2/(V·s),a large ON/OFF ratio of about 3× 106 and a small threshold voltage of about 2.2 V.This novel illumination-controlled morphology strategy provides a facile approach for regulating desired optoelectronic devices performances.关键词
光照/薄膜/形貌/有机场效应晶体管Key words
illumination/films/morphology/organic field-effect transistors分类
信息技术与安全科学引用本文复制引用
秦浩然,张楠,李恩龙,谢安,严育杰..光照调控有机薄膜形貌及其晶体管性能[J].电子元件与材料,2025,44(4):363-367,5.基金项目
国家自然科学基金(62304281) （62304281）
福建省自然科学基金(2023J011450) （2023J011450）
