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Ammonia sensing properties of thick and thin films of Ag6Mo10O33 and Cr1·8Ti0·2O3+δ

机译:Ag 6 Mo 10 O 33 和Cr 1·8 Ti <的厚膜和薄膜的氨感测特性sub> 0·2 O 3 +δ

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摘要

Thick film of silver decamolybdate (Ag6Mo10O33) was screen printed and thin film of chromium titanate Cr1·8Ti0·2O3+δ was laser deposited on alumina substrates. Morphological features of the films were characterised and ammonia sensing properties were studied. Resistance of Ag6Mo10O33 thick films decrease on introduction of NH3 gas and these films were capable of sensing 2 ppm of ammonia in air at 578 K. Cr1·8Ti0·2O3+δ thin films could sense 20 ppm of ammonia in air at 673 K, which exhibited increase in resistance towards NH3 gas.
机译:丝网印刷厚钼酸银(Ag 6 Mo 10 O 33 )厚膜,钛酸铬Cr 1·8薄膜 Ti 0·2 O 3 +δ激光沉积在氧化铝基板上。表征了薄膜的形貌特征并研究了氨感测特性。随着NH 3 气体的引入,Ag 6 Mo 10 O 33 厚膜的电阻降低,并且这些膜能够578 K时检测空气中2 ppm的氨。Cr 1·8 Ti 0·2 O 3 +δ薄膜可检测20 673 K时空气中的氨的ppm,显示出对NH 3 气体的抵抗力增加。

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