Enhanced hydrogen sensing performance of tungsten activated ZnO nanorod arrays prepared on conductive ITO substrate
作者： K Vijayalakshmi , AJCI Renitta , None
DOI: 10.1016/J.CERAMINT.2015.07.063
关键词:
摘要: Abstract We report for the first time, H2 sensing properties of tungsten activated ZnO (W:ZnO) films prepared on electrically conductive Indium Tin Oxide (ITO) coated glass substrate by spray pyrolysis technique. Microstructure, morphology and optical W:ZnO with different W dopant concentrations were investigated. All deposited show a hexagonal wurtzite crystal structure preferred orientation along c-axis perpendicular to ITO substrate. The absorption results revealed increase in band gap improvement transmission upto 3% incorporation ZnO. improved crystallinity film from intensity photo emission, established possibility development sensor device at level. energy dispersive X-ray elemental analysis samples confirmed ions into lattice. SEM influence catalyst uniform well-aligned growth nanorods unique shape substrate, which provided higher capture efficiency favorable Hydrogen (H2) sensing. Gas studied room temperature (from 100 400 ppm). It was demonstrated that doping play an important role defining enhancement response towards H2. Our fast recovery time film, suitable high performance gas detection.
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