Quasi-2D SnO2 Thin Films for Gas Sensors: Chemoresistive Response and Temperature Effect on Adsorption of Analytes

被引：4
作者：
Petrunin, Alexander A. [1 ]
Glukhova, Olga E. [1 ,2 ]
机构：
[1] Saratov NG Chernyshevskii State Univ, Inst Phys, Astrakhanskaya St 83, Saratov 410012, Russia
[2] IM Sechenov First Moscow State Med Univ, Lab Biomed Nanotechnol, Trubetskaya St 8 2, Moscow 119991, Russia
来源：
MATERIALS | 2023年 / 16卷 / 01期
基金：
俄罗斯科学基金会;
关键词：
SnO2; thin films; DFT method; chemoresistive response; gas sensors; Langmuir isotherm model; ab initio; adsorption density; SENSING MECHANISM; HOLLOW MICROSPHERES; 110; SURFACE; NANOPARTICLES; OXIDE; GGA;
D O I：
10.3390/ma16010438
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We performed in silico calculations of electrical conductivity of quasi-2D SnO2 thin films with a (110) surface-prospect material for sensitive element of gas sensors. Electronic structure, charge transfer and chemoresistive response of quasi-2D SnO2 thin films during adsorption of alcohol molecules (ethanol, methanol, isopropanol and butanol) and ketones (acetone, cyclopentanone and cyclohexanone) were calculated. It was found that the electrical conductivity of quasi-2D SnO2 thin films decreases within 4-15% during adsorption of analytes. The influence of temperature on the concentration of analytes on the surface of quasi-2D SnO2 thin films was explored in dependence analyte's type.
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页数：11
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