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

Authors : İrmak KARADUMAN ER, Tuğba ÇORLU, Memet Ali YILDIRIM, Aytunç ATEŞ, Selim ACAR

Pages : 1189-1196

Doi:10.2339/politeknik.621181

View : 37 | Download : 8

Publication Date : 2020-12-01

Article Type : Research Paper

Abstract :In this study, the gas sensing properties of SnO 2 and Zn 0.50 Sn 0.50 O samples produced by Succession Ionic Layer Adsorption and Reaction insert ignore into journalissuearticles values( SILAR); method with different SILAR cycles against NO gas were investigated. Electrical characterization of the produced sample at different temperatures insert ignore into journalissuearticles values(35 °C-135 °C); and different gas concentrations insert ignore into journalissuearticles values(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 0.50 Sn 0.50 O sensor exhibited improved sensing performance at working temperature of 105 ° C compared to SnO 2 sensor..   The ,responses of SnO 2 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 0.50 Sn 0.50 O 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

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