High-performance flexible hydrogen sensor made of WS2 nanosheet-Pd nanoparticle composite film

被引：80

作者：

Kuru, Cihan ^{[1
]}

Choi, Duyoung ^{[1
]}

Kargar, Alireza ^{[2
]}

Liu, Chin Hung ^{[1
]}

Yavuz, Serdar ^{[1
]}

Choi, Chulmin ^{[3
]}

Jin, Sungho ^{[1
,3
]}

Bandaru, Prabhakar R. ^{[3
]}

机构：

[1] Univ Calif San Diego, Mat Sci & Engn Program, 9500 Gilman Dr, La Jolla, CA 92093 USA

[2] Univ Calif San Diego, Dept Elect & Comp Engn, 9500 Gilman Dr, La Jolla, CA 92093 USA

[3] Univ Calif San Diego, Dept Mech & Aerosp Engn, 9500 Gilman Dr, La Jolla, CA 92093 USA

来源：

NANOTECHNOLOGY | 2016年 / 27卷 / 19期

基金：

美国国家科学基金会;

关键词：

WS2; flexible; hydrogen sensor; room temperature; THIN-FILM; PALLADIUM; MOS2; BEHAVIOR; LAYERS;

D O I：

10.1088/0957-4484/27/19/195501

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report a flexible hydrogen sensor, composed of WS2 nanosheet-Pd nanoparticle composite film, fabricated on a flexible polyimide substrate. The sensor offers the advantages of lightweight, mechanical durability, room temperature operation, and high sensitivity. The WS2-Pd composite film exhibits sensitivity (R-1/R-2, the ratio of the initial resistance to final resistance of the sensor) of 7.8 to 50 000 ppm hydrogen. Moreover, the WS2-Pd composite film distinctly outperforms the graphene-Pd composite, whose sensitivity is only 1.14. Furthermore, the ease of fabrication holds great potential for scalable and low-cost manufacturing of hydrogen sensors.

引用

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