| Title: | Nitrogen doped In(2)O(3)-ZnO nanocomposite mesoporous thin film based highly sensitive and selective ethanol sensors |
| Author(s): | Shihabudeen PK; Roy Chaudhuri A; |
| Address: | "Materials Science Centre, Indian Institute of Technology Kharagpur, 721302 Kharagpur, West Bengal, India. ayan@matsc.iitkgp.ac.in" |
| ISSN/ISBN: | 2040-3372 (Electronic) 2040-3364 (Linking) |
| Abstract: | "Nanocomposite metal oxide thin films exhibit promising qualities in the field of gas sensors due to the opportunities provided by the heterointerface formation. In this work, we present the synthesis of nitrogen doped mesoporous In(2)O(3)-ZnO nanocomposite thin films by a simple wet chemical method using urea as the nitrogen precursor. SEM investigation suggests the formation of mesoporous nanocomposite thin films, where the uniformity of the surface pore distribution depends on the relative proportion of In(2)O(3) and ZnO in the composites. HRTEM investigation suggests the formation of sharp interfaces between N-In(2)O(3) and N-ZnO grains in the nanocomposite thin films. The nanocomposite thin films have been tested for their ethanol sensing performance over an extensive range of temperatures, ethanol vapor concentrations and relative humidities. Nitrogen doped nanocomposite thin films with an equal proportion of In(2)O(3) and ZnO exhibit excellent ethanol sensing performance at a reasonable operating temperature ( approximately 94% at 200 degrees C for 50 ppm of ethanol), fast response time ( approximately two seconds), stability over time, enhanced resilience against humidity and selectivity to ethanol over various other volatile organic compounds. All the results indicated that nitrogen doped In(2)O(3)/ZnO nanocomposite thin films portray great possibilities in designing improved performance ethanol sensors" |
| Notes: | "PubMed-not-MEDLINEShihabudeen, P K Roy Chaudhuri, Ayan eng England 2022/03/22 Nanoscale. 2022 Mar 31; 14(13):5185-5193. doi: 10.1039/d2nr00455k" |
