Direct Conversion of Single‐Layer SnO Nanoplates to Multi‐Layer SnO2 Nanoplates with Enhanced Ethanol Sensing Properties |
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| Authors: | Kun‐Mu Li Yi‐Jing Li Ming‐Yen Lu Chung‐I Kuo Lih‐Juann Chen |
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| Affiliation: | 1. Department of Materials Science and Engineering, National Tsing Hua University Hsinchu, 30013 (Taiwan);2. Materials and Chemical Research Laboratories Industrial Technology Research Institute Hsinchu, 31040 (Taiwan) |
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| Abstract: | Direct conversion of single‐layer SnO nanoplates to multi‐layer SnO2 nanoplates is achieved by annealing in an O2 ambient at 700 °C. For 50 ppm ethanol, the sensitivities of the multi‐layer SnO2 nanoplates are more than double that of single‐layer SnO2 nanoplates, which are also formed from the single‐layer SnO. The higher sensitivity of the multi‐layer nanoplates is attributed to their larger surface/volume ratio. The facile fabrication of interconnected multi‐layer SnO2 nanoplates at low temperature directly on a Si substrate and sensing chip without the aid of catalysts offers vast advantages over competing methods for the fabrication of high‐sensitivity SnO2 sensors. |
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| Keywords: | nanoplates sensors tin oxides |
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