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Open AccessArticle

Photothermal Sensing of Nano-Devices Made of Graphene Materials

by Xiwen Lu 1,2, Lijun Yang 1,2,* and Zhan Yang 3,*
1
Key Laboratory of Micro-Systems and Micro-Structures Manufacturing (Harbin Institute of Technology), Ministry of Education, Harbin 150080, China
2
School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
3
The Collaborative Innovation Center of Suzhou Nano Science and Technology, School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215123, China
*
Authors to whom correspondence should be addressed.
Sensors 2020, 20(13), 3671; https://doi.org/10.3390/s20133671
Received: 26 May 2020 / Revised: 19 June 2020 / Accepted: 24 June 2020 / Published: 30 June 2020
(This article belongs to the Special Issue Graphene Based Nanosensors and Their Applications)
Graphene is widely used as the basic materials of nano optical devices and sensors on account of its special structures and excellent photoelectric properties. Graphene is considered as an ideal material for photodetectors because of its ultra-wide absorption spectrum from the ultraviolet to the terahertz band, ultrahigh carrier mobility and ultrafast photoreaction speed. In this study, a photothermal nano-device was made using graphene that was transferred to an electrode using an all-dry viscoelastic stamping method. The nano-device has the advantages of simplicity, high efficiency and instant measurement. This nano-device was used to measure the light absorption of graphene, and the calculated light absorption rate of graphene is basically consistent with previous research results. Experiments on irradiation at different wavelengths and thermal heating at different temperatures show that the nano-device has an excellent response to near-infrared and mid-infrared light. The conclusions provide an experimental basis for the research, design and fabrication of nano-devices, and this device can provide an effective method for detecting light and temperature in areas such as electronic components and solar cells. View Full-Text
Keywords: graphene; nano-devices; photodetector; photoresponsivity; heat-sensitive; sensitivity graphene; nano-devices; photodetector; photoresponsivity; heat-sensitive; sensitivity
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Lu, X.; Yang, L.; Yang, Z. Photothermal Sensing of Nano-Devices Made of Graphene Materials. Sensors 2020, 20, 3671.

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