contact@ijirct.org      

 

Publication Number

2206003

 

Page Numbers

11-17

 

Paper Details

Study of Electrical and Gas Sensing Properties of as Deposited Niobium Pentoxide (Nb2O5) Thick Films Fabricated by Screen Printing Method

Authors

Bhushan S. Pardeshi, Vasant G. Wagh, Arun V. Patil

Abstract

Air pollution is the major issue in the world. Due to globalization of world, in the daily life human beings facing various types of problems as well as suffer from health issues. Hence there is need to develop gas sensors. The current research work dedicated on gas sensing and electrical properties of as deposited (un-annealed) niobium oxide thick films. Because of unique properties of niobium pentoxide (Nb2O5) like electrical, chemical and physical, it has been reported as a notable gas detection material. Thick films were fabricated using standard screen printing method. The glass substrates were used to fabricate films. The electrical properties of as deposited Nb2O5 thick film were study by resistivity, temperature coefficient resistance (TCR), and activation energy at high and low temperature region. The thickness, resistivity and TCR of thick film were found to be 38 µm, 2511.42 Ω-m and -0.0022434 /°C respectively. The gas sensing properties were investigated using sensitivity, selectivity, ppm variation, response time and recovery time of the films. The fabricated Nb2O5 thick films exposed to NH3, CO2, NO2 and ethanol gases to determine sensitivity. The Nb2O5 thick films show a maximum sensitivity to NO2 gas as compared to other targeted gases. The maximum sensitivity was found to be 62.03% to NO2 gas at a concentration of 500 ppm and operating temperature was 200 °C. The films also show rapid response (~12) and recovery time (~34) seconds.

Keywords

Niobium Pentoxide, Sensitivity, Oxidizing Gas, Pollution

 

. . .

Citation

Study of Electrical and Gas Sensing Properties of as Deposited Niobium Pentoxide (Nb2O5) Thick Films Fabricated by Screen Printing Method. Bhushan S. Pardeshi, Vasant G. Wagh, Arun V. Patil. 2022. IJIRCT, Volume 8, Issue 6. Pages 11-17. https://www.ijirct.org/viewPaper.php?paperId=2206003

Download/View Paper

 

Download/View Count

92

 

Share This Article