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MOS2 AND CDTE BASED NO2 GAS SENSOR PDF

Thus, NO2 and NH3 molecules are likely to adsorb onto the surface of the MoS2. Qiao, Tunable MoS2/SnO2 PN heterojunctions for an efficient trimethylamine gas sensor and. First-principles density functional theory calculations indicated that NO2 and NH3 molecules have negative adsorption energies (i.e., the adsorption processes are exothermic). Recent advances in SnO2 nanostructure based gas sensors. In situ photoluminescence characterisation revealed the charge transfer mechanism between the gas molecules and MoS2, which was validated by theoretical calculations. A highly sensitive and selective gas sensor based on the CVD-synthesised MoS2 was developed.

Here, we report a high-performance gas sensor constructed using atomic-layered MoS2 synthesised by chemical vapour deposition (CVD). In addition, the detection mechanisms for gas molecules are not fully understood. However, intrinsic synthesis challenges have made this task difficult. Two-dimensional (2D) molybdenum disulphide (MoS2) atomic layers have a strong potential to be used as 2D electronic sensor components.

7 Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, USA.

6 Cambridge Graphene Center, University of Cambridge, 9 JJ Thomson Avenue, Cambridge, United Kingdom.

5 Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States.

4 Electrochemistry Department, Korea Institute of Materials Science (KIMS), 797 Changwondaero, Sungsan-Gu, Changwon, Gyeongnam 642-831, Republic of Korea.

3 School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-Gu, Gwangju 500-712, Republic of Korea.2 Advanced Characterization and Analysis Group, Korea Institute of Materials Science (KIMS), 797 Changwondaero, Sungsan-Gu, Changwon, Gyeongnam 642-831, Republic of Korea.Better gas response was observed for higher thickness of MoS 2 films towards NO 2 gas. For gas sensing, the change in the resistance of MoS 2 films was observed when exposed to NO 2 gas.

MOS2 AND CDTE BASED NO2 GAS SENSOR PDF

497 PDF Ultrasensitive photodetectors based on monolayer MoS2. MoS 2 based NO 2 gas sensors were fabricated using DC magnetron sputtering technique.

1 Advanced Functional Thin Films Department, Surface Technology Division, Korea Institute of Materials Science (KIMS), 797 Changwondaero, Sungsan-Gu, Changwon, Gyeongnam 642-831, Republic of Korea. The first use of Schottky-contacted chemical vapor deposition grown monolayer MoS2 as high-performance room temperature chemical sensors showing clear detection of NO2 and NH3 down to 20 ppb and 1 ppm, respectively is reported.