题目：

Visible-light-enhanced gas sensing of CdS_xSe_1−x nanoribbons for acetic acid at room temperature

作者：

Jie Zhang ^a, Fan Liao ^a, Yan Zhu ^a, Jianping Sun ^b,*, Mingwang Shao ^a,*

单位：

^a Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China.

^b Testing and Analysis Center of Soochow University, Soochow University, Suzhou 215123, P.R. China

摘要：

The visible-light-induced gas sensors based on the ternary compound CdS_xSe_1−x nanoribbons have been successfully fabricated. The compound was obtained via a metal-catalyzed physical evaporation route.X-ray diffraction, scanning electron microscopy and transmission electron microscopy were employed to confirm the formation and composition of CdS_xSe_1−x nanoribbons. The optimum operating temperature of CdS_xSe_1−x-based gas sensors in the dark is 200 ◦C when they were used in detection of acetic acid with the concentration range from 25 to 400 ppm, while the optimum operating temperature could be reduced by approximately 100 ◦C under visible light irradiation. More importantly, the sensors can even work efficiently at room temperature under visible light. The calculated limit of detection decreased from 1.13 ppm (200 ◦C, dark) to 0.87 ppm (100 ◦C, visible light) and 1.03 ppm (room temperature, visible light), respectively. The enhanced sensing properties of the CdS_xSe_1−x-based gas sensors were due to photo-generated electrons. This work will pave a way for the development of the low-cost practical gas sensors.

影响因子：

3.84

分区情况：

2区

链接：

http://dx.doi.org/10.1016/j.snb.2015.03.082