2012 Fiscal Year Final Research Report
Control of electrochemical reaction by amorphous carbon nano-particles and development of high-sensitive gas sensor
| Project/Area Number |
23656242
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Yamaguchi University |
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Principal Investigator |
HONDA Kensuke 山口大学, 大学院・理工学研究科, 准教授 (60334314)
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| Project Period (FY) |
2011 – 2012
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| Keywords | ダイヤモンドライクカーボン / 半導体 / センサー材料 |
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| Research Abstract |
The objective of this study was to create a-C surface with higher electro-catalytic activity by controlling chemical compositions and sizes of amorphous carbon nano-particles, and to establish the electrochemical method to detect hazardous materials like AsH3and PH3quantitatively. The concentration of dopant atoms showing p type conductivity was tried to be controlled. Carrier concentration of p-type a-C could be successfully varied in the range from 1014cm-3to 1.3×1019cm-3 by changing the ratio of trimethyl borateand n-hexane used as source materials. Boron atoms were confirmed to serve as an electro-catalyst for hydrogen evolution. Since the reactivity to hydrogen evolution could be suppressed at a-C films doped with tiny amounts of boron, Mn2+ion could be efficiently reduced. It results that Mn2+ion at extremely lower concentration (0.02 mM) than discharge standard (0.2 mM) could be detected quantitatively.
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