Effect of an Electrical Field Applied to the Metal Capping Layer on the Electrical Properties of SiZnSnO Thin-Film Transistors for Touch Sensor Application

IF 3.4 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Sunjin Lee, Sang Yeol Lee
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引用次数: 0

Abstract

Thin-film transistors (TFTs) have been studied for their high mobility and stability to facilitate the development of TFT-based touch sensors and electronic devices. A metal capping (MC) layer on the back channel of Si–Zn–Sn–O(SZTO) TFTs has been proposed to improve the electrical properties. MC, when adopted on the channel layer, has low resistance, leading to an improvement in the mobility of the TFT. The mobility of Ti/Al MC TFT has improved from 20.7 to 37.9 cm2 V−1 s compared to the pristine TFTs. Applying a potential voltage to the MC layer sensitively modulates the IV characteristics of the TFT. The present study applies a voltage of 60 mV, similar to that of the human body, to MC-TFTs to explore their possibilities as human touch sensors. The sensitivity and the energy bandgap modulation are also discussed.

Abstract Image

施加在金属盖层上的电场对用于触摸传感器的SiZnSnO薄膜晶体管电性能的影响
薄膜晶体管(TFTs)由于其高迁移性和稳定性而受到广泛的研究,从而促进了基于薄膜晶体管的触摸传感器和电子器件的发展。提出了在Si-Zn-Sn-O (SZTO) TFTs的后通道上添加金属封盖层(MC)以改善其电学性能。当在通道层上采用MC时,具有低电阻,导致TFT的迁移率提高。与原始TFT相比,Ti/Al MC TFT的迁移率从20.7 cm2 V−1 s提高到37.9 cm2 V−1 s。对MC层施加电位电压可灵敏地调制TFT的I-V特性。目前的研究对mc - tft施加了与人体相似的60毫伏电压,以探索其作为人体触摸传感器的可能性。讨论了灵敏度和能量带隙调制。
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来源期刊
Advanced Engineering Materials
Advanced Engineering Materials 工程技术-材料科学:综合
CiteScore
5.70
自引率
5.60%
发文量
544
审稿时长
1.7 months
期刊介绍: Advanced Engineering Materials is the membership journal of three leading European Materials Societies - German Materials Society/DGM, - French Materials Society/SF2M, - Swiss Materials Federation/SVMT.
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