Room Temperature Acetone-Sensing Properties of Ru-Doped MoSe₂ Nanoflowers: Experimental and Density Functional Theory Study

• Published in: IEEE electron device letters Vol. 42; no. 5; pp. 739 - 742
• Main Authors: Yu, Sujing, Zhang, Dongzhi, Li, Qi
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.05.2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Acetone; Acetone sensor; Adsorption; Density functional theory; Doping; First principles; Gas sensors; Molybdenum compounds; Room temperature; Ru-MoSe; Selectivity; sensing mechanism; Sensitivity; Sensors; Substrates; Temperature sensors; Three-dimensional displays
• ISSN: 0741-3106; 1558-0563
• DOI: 10.1109/LED.2021.3067895

A high-performance acetone gas sensor based on Ru-MoSe 2 nanoflowers was synthesized by a facile hydrothermal method. The gas-sensing properties of MoSe 2 and Ru-MoSe 2 were investigated at room temperature. The Ru-MoSe 2 based sensor exhibits high sensitivity, good selectivity, and stability, which effectively enhance the acetone sensing performance. The sensitivity of Ru-doped MoSe 2 is more than six times that of MoSe 2 sensor. In addition, the first-principle density functional theory was employed to explore the acetone sensing mechanism of Ru-MoSe 2 . The results indicate that the developed Ru-doped MoSe 2 sensor has promising prospect in high-performance acetone detection, which is expected to be used for diagnosing diabetes in the future.