Antimonene: A promising candidate for acetone sensors with high selectivity and sensitivity

• Published in: 2017 IEEE SENSORS pp. 1 - 3
• Main Authors: Da-Wei Wang, Ai-Jun Yang, Ji-Feng Chu, Pin-Lei Lv, Yang Liu, Xiao-Hua Wang, Ming-Zhe Rong
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-10-2017
• Subjects: acetone; Adsorption; antimonene; Charge transfer; Gas detectors; gas sensors; Graphene; Methane; organic molecules; Two dimensional displays
• DOI: 10.1109/ICSENS.2017.8233923

Antimonene is a new 2D material and its applications in gas sensors are still deficient. We took a first principles investigation of three small organic molecules (formaldehyde, acetone, and methane) adsorption on the antimonene. We found that only the adsorption of the acetone molecule could induce a moderate adsorption energy, obvious charge transfer, and large work function change, which are suitable for gas sensor applications. Furthermore, the electron density analysis demonstrated that the strong interaction between the acetone molecule and the antimonene results from the orbital hybridization happening between the oxygen atom and the Sb atom. Finally, the adsorption of the acetone molecule on different substrates (graphene, phosphorene, and MoS2) were also investigated. The results showed that antimonene is the most suitable candidate for acetone sensors. In summary, we predicted that antimonene is a promising candidate for acetone sensors with high selectivity and sensitivity.