UV-enhanced ozone gas sensing response of ZnO-SnO₂ heterojunctions at room temperature

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• 作者：Luí ; s F. da Silva^a ; ^{lfsilva83@gmail.com}Author Vitae ; J.-C. M&rsquo ; Peko^b ; ^{peko@ifsc.usp.br}Author Vitae ; Ariadne C. Catto^bAuthor Vitae ; Sandrine Bernardini^cAuthor Vitae ; Valmor R. Mastelaro^bAuthor Vitae ; Khalifa Aguir^cAuthor Vitae ; Caue Ribeiro^dAuthor Vitae ; Elson Longo^aAuthor Vitae
• 关键词：Hydrothermal ; Heterojunction ; ZnO ; SnO2 ; UV light ; Ozone sensor
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：240
• 期：Complete
• 页码：573-579
• 全文大小：1888 K
• 卷排序：240

文摘

ZnO – SnO2 heterojunctions were synthesized via hydrothermal method. The ozone gas-sensing properties were investigated at room temperature under UV illumination. The ZnO-SnO2 heterojunctions exhibited a good sensitivity to sub-ppb ozone levels. The good separation of photogenerated carriers favored the gas-sensing performance. The results show that ZnO-SnO2 heterojunctions can be considered a potential ozone gas sensor.