High-performance flexible hybrid field-effect transistors based on cellulose fiber paper
High-performance flexible hybrid field-effect transistors based on cellulose fiber paper
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DOI：
10.1109/led.2008.2001549
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发表时间：
2008-09-01
影响因子：
4.9
通讯作者：
Martins, Rodrigo
中科院分区：
文献类型：
--
作者：
Fortunato, Elvira;Correia, Nuno;Martins, Rodrigo
在这封信中，我们首次报告了使用纤维素纤维纸作为氧化物基半导体薄膜场效应晶体管（FET）中的介电层。在这种新方法中，我们在“层间”结构中使用基于纤维素纤维的纸张，因为该设备构建在纤维素片的两侧。这种混合 FET 具有出色的工作特性，例如高沟道饱和迁移率 (> 30 cm(2)/Vs)、漏源电流开/关调制比约为 104、接近零阈值电压、增强型 n 型操作以及 0.8 V/十倍频程的亚阈值栅极电压摆幅。纤维素纤维纸的 FEW 特性在空气环境条件下进行了测量，经过两个月的加工后表现出良好的稳定性。所获得的结果超过了非晶硅薄膜晶体管 (TFT)，并且可以与在玻璃或晶体硅基板上生产的相同氧化物基 TFT 相媲美。这些设备与大规模/大面积沉积技术和低成本基板的兼容性以及极低的操作偏差，表明这是一种有前途的方法，可用于获得高性能一次性电子产品，如纸质显示器、智能标签、智能包装、RFID和用于生物应用中自我分析的即时护理系统等。
In this letter, we report for the first time the use of a sheet of cellulose-fiber-based paper as the dielectric layer used in oxide-based semiconductor thin-film field-effect transistors (FETs). In this new approach, we are using the cellulose-fiber-based paper in an "interstrate" structure since the device is built on both sides of the cellulose sheet. Such hybrid FETs present excellent operating characteristics such as high channel saturation mobility (> 30 cm(2)/Vs), drain-source current on/off modulation ratio of approximately 104, near-zero threshold voltage, enhancement n-type operation, and subthreshold gate voltage swing of 0.8 V/decade. The cellulose-fiber-based paper FEW characteristics have been measured in air ambient conditions and present good stability, after two months of being processed. The obtained results outpace those of amorphous Si thin-film transistors (TFTs) and rival with the same oxide-based TFTs produced on either glass or crystalline silicon substrates. The compatibility of these devices with large-scale/large-area deposition techniques and low-cost substrates as well as their very low operating bias delineates this as a promising approach to attain high-performance disposable electronics like paper displays, smart labels, smart packaging, RFID, and point-of-care systems for self-analysis in bioapplications, among others.