Low Concentration NO Gas Detection Of SnO2 And Zn0.50Sn0.50O Sensors

Year 2020, Volume: 23 Issue: 4, 1189 - 1196, 01.12.2020

İrmak Karaduman Er , Tuğba Çorlu Memet Ali Yıldırım , Aytunç Ateş Selim Acar

https://doi.org/10.2339/politeknik.621181

Cited By: 3

Abstract

In this study, the gas sensing properties of SnO₂
and Zn_0.50Sn_0.50O samples produced by Succession Ionic Layer
Adsorption and Reaction (SILAR) method with different SILAR cycles against NO gas were
investigated. Electrical characterization of the produced sample at different
temperatures (35 °C-135 °C) and different gas concentrations (50 ppb-25 ppm)
were performed. The working temperature was found at 105 °C. The sensors were proved to have acceptable responses towards 50 ppb NO
gas. Zn_0.50Sn_0.50O sensor exhibited improved sensing
performance at working temperature of 105 °C compared to SnO₂ sensor..   The ,responses of SnO₂ sensors
for the 50 ppb NO gas concentration, sensitivities of 1.74%, 2.15% and 3.37%
were obtained for 20, 30 and 40 cycles, respectively. On the other hand,
the,responses of Zn_0.50Sn_0.50O sensors for the 50 ppb NO
gas concentration sensitivities of 3.01%, 3.74% and 4.16% were obtained for 20, 30 and 40
cycles, respectively. The measurement results showed that the sensitivity of
the sensors changed depending on the doping and producing cycles.

Keywords

Gas sensing, SILAR method, NO gas

Supporting Institution

Tubitak

Project Number

115M658

References

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