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https://irlib.pccu.edu.tw/handle/987654321/24148
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| 題名: | Fabrication of tin dioxide nanowires with ultrahigh gas sensitivity by atomic layer deposition of platinum |
| 作者: | Lin, YH (Lin, Yu-Hung)
Hsueh, YC (Hsueh, Yang-Chih)
Lee, PS (Lee, Po-Sheng)
Wang, CC (Wang, Chih-Chieh)
Wu, JM (Wu, Jyh Ming)
Perng, TP (Perng, Tsong-Pyng)
Shih, HC (Shih, Han C.) |
| 貢獻者: | Inst Mat Sci & Nanotechnol |
| 關鍵詞: | DOPED SNO2 NANOWIRES
PHOTON-SENSING PROPERTIES
ROOM-TEMPERATURE
THIN-FILMS
SENSORS
OXIDE
SURFACE
NANOPARTICLES
TIO2
H2S |
| 日期: | 2011 |
| 上傳時間: | 2013-02-18 13:56:12 (UTC+8) |
| 摘要: | Gas-sensing properties of SnO(2) nanowires were investigated before and after their surface functionalization by the atomic layer deposition (ALD) of Pt nanoparticles. The morphology, size, and concentration of Pt particles on SnO(2) nanowires can be controlled by varying the number of ALD reaction cycles, and therefore, the gas-sensing properties of the nanowires can be altered via the Pt catalyst effect and the modification of Schottky barrier junctions on the nanowire surface in the vicinity of Pt nanoparticles. The Pt-decorated SnO(2) nanowires obtained after 200 ALD reaction cycles exhibited an ultrahigh gas sensitivity (S = I(g)/I(a)) of similar to 8400 to 500 ppm ethanol vapor at 200 degrees C. This provides an efficient route for strongly enhancing the gas sensitivity of semiconducting nanostructures and fabricating gas sensors that are highly sensitive and responsive. |
| 關聯: | JOURNAL OF MATERIALS CHEMISTRY 卷: 21 期: 28 頁數: 10552-10558 |
| 顯示於類別: | [化學工程與材料工程學系暨碩士班] 期刊論文
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