材料科学
聚酰亚胺
可穿戴计算机
纳米技术
剥脱关节
光电子学
薄膜
基质(水族馆)
蒸发
图层(电子)
计算机科学
嵌入式系统
石墨烯
地质学
物理
海洋学
热力学
作者
Ming Chen,Zhenkai Li,Weimin Li,Chengwei Shan,Wenjie Li,Kaiwei Li,Guoqiang Gu,Feng Ye,Guo‐Hua Zhong,Lei Wei,Chunlei Yang
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2018-08-31
卷期号:29 (45): 455501-455501
被引量:44
标识
DOI:10.1088/1361-6528/aade32
摘要
Advances in two-dimensional semiconducting thin films enable the realization of wearable electronic devices in the form factor of flexible substrate/thin films that can be seamlessly adapted in our daily lives. For wearable gas sensing, two-dimensional materials, such as SnSe2, are particularly favorable because of their high surface-to-volume ratio and strong adsorption of gas molecules. Chemical vapor deposition and liquid/mechanical exfoliation are the widely applied techniques to obtain SnSe2 thin films. However, these methods normally result in non-uniform and isolated flakes which cannot apply to the practical industrial-scale wearable electronic devices. Here, we demonstrate large-scale (10 cm × 10 cm), uniform, and self-standing SnSe2 nanoplate arrays by co-evaporation process on flexible polyimide substrates. Both structural and morphological properties of the resulting SnSe2 nanoplates are systematically investigated. Particularly, the single-crystalline SnSe2 nanoplates are achieved. Furthermore, we explore the application of the polyimide/SnSe2 nanoplate arrays as wearable gas sensors for detecting methane. The wearable gas sensors show high sensitivity, fast response and recovery, and good uniformity. Our approach not only provides an efficient technique to obtain large-area, uniform and high-quality single-crystalline SnSe2 nanoplates, but also impacts on the future developments of layered metal dichalcogenides-based wearable devices.
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