| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8023867 | Surface and Coatings Technology | 2018 | 38 Pages |
Abstract
In the present work, Nanostructured ZnO sensing layers having preferred orientation along (002) plane have been grown by rf sputtering technique in glancing angle deposition (GLAD) configuration. ZnO nanostructures grown at a GLAD angle of 70° exhibit sensing response of about 5.75 Ã 102 at a relatively lower operating temperature of 150 °C towards 500 ppm of CO gas. Afterwards the optimized ZnO sensing element has been decorated with the Pd catalyst and an enhanced CO gas sensing response of 1.022 Ã 103 has been obtained with quick response time and recovery time of 17 s and 23 s respectively. The fabricated Pd/ZnO sensing element is found to be highly selective towards detection of target CO gas. The possible sensing mechanism has been explained in detail.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Avneet Singh, Anjali Sharma, Monika Tomar, Vinay Gupta,