Tuning of CO gas sensing performance of spray pyrolyzed ZnO thin films by electron beam irradiation

Aninamol Ani; Poornesh P; K. K. Nagaraja; E. Kolesnikov; Igor V. Shchetinin; Albin Antony; Suresh D. Kulkarni; Ganesh Sanjeev; Vikash Chandra Petwal; Vijay Pal Verma; Jishnu Dwivedi

doi:10.1016/j.mssp.2020.105249

Tuning of CO gas sensing performance of spray pyrolyzed ZnO thin films by electron beam irradiation

Aninamol Ani, Poornesh P^*, K. K. Nagaraja, E. Kolesnikov, Igor V. Shchetinin, Albin Antony, Suresh D. Kulkarni, Ganesh Sanjeev, Vikash Chandra Petwal, Vijay Pal Verma, Jishnu Dwivedi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Electron beam induced effects on the sensing performance of spray-coated ZnO thin films for carbon monoxide (CO) detection are reported. The optical transmittance of pristine film was around 80% and decreased upon e-beam treatment. XRD studies confirmed the hexagonal wurtzite structure of ZnO. Carbon monoxide (CO) sensing measurements performed at 300 °C revealed that irradiated ZnO films exhibited enhanced response and recovery time compared to pristine film. The 5 kGy irradiated film displayed improved sensing performance with respect to response and recovery time towards the CO concentrations tested. It showed a quick response time of 43 s and a recovery time of 77 s towards the lowest detected CO gas limit of 2 ppm. The response time of 10 kGy irradiated film was 5 s towards 2 ppm. The 5 kGy irradiated ZnO sensor exhibited an excellent response of 1.39 and 2.63 towards 2 ppm and 5 ppm of CO gas respectively. The observed enhancement in both response and recovery times as well as response of the sensor is ascribed to the oxygen vacancies present in the film which is evident from the photoluminescence studies and also due to large number of grain boundaries.

Original language	English
Article number	105249
Journal	Materials Science in Semiconductor Processing
Volume	119
DOIs	https://doi.org/10.1016/j.mssp.2020.105249
Publication status	Published - 15-11-2020

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Ani, A., P, P., Nagaraja, K. K., Kolesnikov, E., Shchetinin, I. V., Antony, A., Kulkarni, S. D., Sanjeev, G., Chandra Petwal, V., Verma, V. P., & Dwivedi, J. (2020). Tuning of CO gas sensing performance of spray pyrolyzed ZnO thin films by electron beam irradiation. Materials Science in Semiconductor Processing, 119, Article 105249. https://doi.org/10.1016/j.mssp.2020.105249

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title = "Tuning of CO gas sensing performance of spray pyrolyzed ZnO thin films by electron beam irradiation",

abstract = "Electron beam induced effects on the sensing performance of spray-coated ZnO thin films for carbon monoxide (CO) detection are reported. The optical transmittance of pristine film was around 80% and decreased upon e-beam treatment. XRD studies confirmed the hexagonal wurtzite structure of ZnO. Carbon monoxide (CO) sensing measurements performed at 300 °C revealed that irradiated ZnO films exhibited enhanced response and recovery time compared to pristine film. The 5 kGy irradiated film displayed improved sensing performance with respect to response and recovery time towards the CO concentrations tested. It showed a quick response time of 43 s and a recovery time of 77 s towards the lowest detected CO gas limit of 2 ppm. The response time of 10 kGy irradiated film was 5 s towards 2 ppm. The 5 kGy irradiated ZnO sensor exhibited an excellent response of 1.39 and 2.63 towards 2 ppm and 5 ppm of CO gas respectively. The observed enhancement in both response and recovery times as well as response of the sensor is ascribed to the oxygen vacancies present in the film which is evident from the photoluminescence studies and also due to large number of grain boundaries.",

author = "Aninamol Ani and Poornesh P and Nagaraja, {K. K.} and E. Kolesnikov and Shchetinin, {Igor V.} and Albin Antony and Kulkarni, {Suresh D.} and Ganesh Sanjeev and {Chandra Petwal}, Vikash and Verma, {Vijay Pal} and Jishnu Dwivedi",

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doi = "10.1016/j.mssp.2020.105249",

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T1 - Tuning of CO gas sensing performance of spray pyrolyzed ZnO thin films by electron beam irradiation

AU - Ani, Aninamol

AU - P, Poornesh

AU - Nagaraja, K. K.

AU - Kolesnikov, E.

AU - Shchetinin, Igor V.

AU - Antony, Albin

AU - Kulkarni, Suresh D.

AU - Sanjeev, Ganesh

AU - Chandra Petwal, Vikash

AU - Verma, Vijay Pal

AU - Dwivedi, Jishnu

PY - 2020/11/15

Y1 - 2020/11/15

N2 - Electron beam induced effects on the sensing performance of spray-coated ZnO thin films for carbon monoxide (CO) detection are reported. The optical transmittance of pristine film was around 80% and decreased upon e-beam treatment. XRD studies confirmed the hexagonal wurtzite structure of ZnO. Carbon monoxide (CO) sensing measurements performed at 300 °C revealed that irradiated ZnO films exhibited enhanced response and recovery time compared to pristine film. The 5 kGy irradiated film displayed improved sensing performance with respect to response and recovery time towards the CO concentrations tested. It showed a quick response time of 43 s and a recovery time of 77 s towards the lowest detected CO gas limit of 2 ppm. The response time of 10 kGy irradiated film was 5 s towards 2 ppm. The 5 kGy irradiated ZnO sensor exhibited an excellent response of 1.39 and 2.63 towards 2 ppm and 5 ppm of CO gas respectively. The observed enhancement in both response and recovery times as well as response of the sensor is ascribed to the oxygen vacancies present in the film which is evident from the photoluminescence studies and also due to large number of grain boundaries.

AB - Electron beam induced effects on the sensing performance of spray-coated ZnO thin films for carbon monoxide (CO) detection are reported. The optical transmittance of pristine film was around 80% and decreased upon e-beam treatment. XRD studies confirmed the hexagonal wurtzite structure of ZnO. Carbon monoxide (CO) sensing measurements performed at 300 °C revealed that irradiated ZnO films exhibited enhanced response and recovery time compared to pristine film. The 5 kGy irradiated film displayed improved sensing performance with respect to response and recovery time towards the CO concentrations tested. It showed a quick response time of 43 s and a recovery time of 77 s towards the lowest detected CO gas limit of 2 ppm. The response time of 10 kGy irradiated film was 5 s towards 2 ppm. The 5 kGy irradiated ZnO sensor exhibited an excellent response of 1.39 and 2.63 towards 2 ppm and 5 ppm of CO gas respectively. The observed enhancement in both response and recovery times as well as response of the sensor is ascribed to the oxygen vacancies present in the film which is evident from the photoluminescence studies and also due to large number of grain boundaries.

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Tuning of CO gas sensing performance of spray pyrolyzed ZnO thin films by electron beam irradiation

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