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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Wu, Wen-Wei Yeh, Ping-Hung Lai, Chun-Yen Wang, Wen-Chieh Yua, Tzu-Hsuan Chen, Zong-Yi Lin, Yu-Ting |
| Copyright Year | 2016 |
| Abstract | In this work, the detection ability of nanosensors can be improved extraordinarily via surface defect engineering. A kinked SnO2−X/SnO2 nanostructure was fabricated by tuning the oxygen flow, and this kinked SnO2−X/SnO2 nanostructure was used to study the mechanism of surface defect (oxygen vacancy, VO) effects via electric measurements. For UV light sensing, the response of the SnO2−X NW device is always better than the SnO2 NW device, and is two orders higher under pure O2 surrounding conditions. The detection mechanism can be clarified by changing the detection environment (oxygen concentration) and the UV light detection sensitivity can be improved by increasing the surface VO density. Furthermore, the SnO2−X NW device is very sensitive to its surrounding environment due to the high surface VO density. Hence, CO/O2 alternate-detection was used to verify our hypothesis; the results show that the SnO2−X NW device presents great detection abilities, compared with the SnO2 NW device. The sensitivity of the SnO2−X NW device is two orders higher and the reset/response time is faster, compared with the SnO2 NW device. To verify this hypothesis, the polycrystalline structure was fabricated to prove that the detection ability of metal oxide nanosensors can be improved gigantically by increasing surface defect amounts. |
| Starting Page | 65146 |
| Ending Page | 65151 |
| Page Count | 6 |
| File Format | HTM / HTML PDF |
| ISSN | 20462069 |
| Volume Number | 6 |
| Issue Number | 69 |
| Journal | RSC Advances |
| DOI | 10.1039/c6ra09033h |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Oxygen Crystallite Nanostructure |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
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