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OTFTs结构与器件性能
引用本文:王伟,石家纬,姜文海,郭树旭,张宏梅,马东阁,全宝富.OTFTs结构与器件性能[J].功能材料与器件学报,2007,13(1):82-85.
作者姓名:王伟  石家纬  姜文海  郭树旭  张宏梅  马东阁  全宝富
作者单位:1. 吉林大学电子科学与工程学院,集成光电子学国家重点联合实验室,长春,130012
2. 中国科学院长春应用化学研究所,高分子物理与化学国家重点实验室,长春,130022
基金项目:国家自然科学基金 , 吉林省自然科学基金 , 国家重点基础研究发展计划(973计划)
摘    要:在重掺杂的Si衬底上分别制备了底电极(Bottom—contact organic thin—film transistors,BCOTFYs)和顶电极(Top—contact organic thin—film transistors,TC—OTFYs)有机薄膜场效应晶体管,探讨了源、漏电极位置对器件性能的影响。结果表明,顶电极可以形成良好的欧姆接触,其器件的迁移率和开关电流比均高出BC—OTFYs器件三个数量级。研究了栅绝缘层的薄膜厚度对器件的电性能的影响。结果表明,在相同电压下,薄的绝缘层增大了沟道区域的电场,可积累更多的电荷,以填充更多的陷阱,使器件的场效应迁移率和工作电流得到了明显的提高。

关 键 词:有机薄膜场效应晶体管  顶电极  底电极  迁移率
文章编号:1007-4252(2007)01-0082-04
修稿时间:2006年2月9日

Configurations of OTFTs and the device performance
WANG Wei,SHI Jia-wei,JIANG Wen-hai,GUO Shu-xu,ZHANG Hong-mei,MA Dong-ge,QUAN Bao-fu.Configurations of OTFTs and the device performance[J].Journal of Functional Materials and Devices,2007,13(1):82-85.
Authors:WANG Wei  SHI Jia-wei  JIANG Wen-hai  GUO Shu-xu  ZHANG Hong-mei  MA Dong-ge  QUAN Bao-fu
Abstract:Organic thin-film transistors based on the heavily doped silicon substrates were fabricated with two different designs: bottom and top contact configurations(referred to as BC-OTFTs and TC-OTFTs,respectively).The influence of configurations on the device performance was investigated.The results indicate that good contact can be obtained with top contact;the mobility and the on/off ratio of TC-OTFTs are three orders of magnitude higher than those of BC-OTFTs.The thickness of gate insulator can also influence the device performance.At the same gate voltage,thinner gate insulator enhanced the field.As a result,more carriers can be accumulated to fill up more traps,so that the mobility and the operation current are enhanced subsequently.
Keywords:organic thin-film transistors  top contact  bottom contact  mobility
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