Role of Native Defect in Near Room Temperature CH4 Sensing Using Nanostructured V2O5

Radhakrishnan Reshma P.; Prasad Arun K.; Dhara Sandip

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Role of Native Defect in Near Room Temperature CH4 Sensing Using Nanostructured V2O5

机译：使用纳米结构V2O5在接近室温CH4感测的内天然缺陷的作用

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Native defects are highly prevalent in vanadium pentoxide (V2O5) as it can easily get converted into reduced oxides. The role of defects in gas sensing properties of V2O5 nanostructures, however, are not well understood. In the present report, effect of native defects on near room temperature sensing is reported for the first time. Hydrothermally grown V2O5 nanoparticles with substantial sensor response to CH4 close to room temperature at 50 degrees C is presented. Fast response and recovery times of 43 s and 75 s, respectively, for 500 ppm CH4 gas at optimum operating temperature of 150 degrees C were observed. Temperature dependent photoluminescence studies were carried out to understand the role of native defects and their emission behavior leading to carrier saturation in realizing optimum operating temperature.

机译：本地缺陷在五氧化二钒（V2O5）中具有高度普遍的缺陷，因为它可以容易地转化为降低的氧化物。然而，缺陷在V2O5纳米结构的气体传感性质中的作用尚不清楚。在本报告中，首次报告了本地缺陷对近室温感测的影响。呈现了在50℃下接近室温的具有大量传感器响应的水热量生长的V2O5纳米颗粒。观察到快速响应和43秒和75秒的恢复时间，在最佳工作温度下为150℃的最佳工作温度为500ppm CH4气体。进行温度依赖性光致发光研究，以了解天然缺陷的作用及其排放行为，导致载体饱和在实现最佳工作温度方面。

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来源
《IEEE sensors journal》 |2020年第9期|4555-4561|共7页
作者
Radhakrishnan Reshma P.; Prasad Arun K.; Dhara Sandip;
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作者单位

Indira Gandhi Ctr Atom Res Homi Bhabha Natl Inst Kalpakkam 603102 Tamil Nadu India;

Indira Gandhi Ctr Atom Res Homi Bhabha Natl Inst Kalpakkam 603102 Tamil Nadu India|Indira Gandhi Ctr Atom Res Surface & Nanosci Div Mat Sci Grp Kalpakkam 603102 Tamil Nadu India;

Indira Gandhi Ctr Atom Res Homi Bhabha Natl Inst Kalpakkam 603102 Tamil Nadu India|Indira Gandhi Ctr Atom Res Surface & Nanosci Div Mat Sci Grp Kalpakkam 603102 Tamil Nadu India;

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原文格式 PDF
正文语种 eng
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关键词
Vanadium pentoxide; methane sensing; native defects; photoluminescence;

机译：钒五氧化钒;甲烷感应;本地缺陷;光致发光;

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1. Investigation on CH4 sensing characteristics of hierarchical V2O5 nanoflowers operated at relatively low temperature using chemiresistive approach [J] . Analytica chimica acta . 2020,第期

机译：Chemirationistive方法在相对低温下操作的等级V2O5纳米辊CH4感测特性的研究
2. Native defect-assisted enhanced response to CH4 near room temperature by Al0.07Ga0.93N nanowires [J] . Parida Santanu, Das A., Prasad Arun K., Physical chemistry chemical physics: PCCP . 2018,第27期

机译：天然缺陷辅助通过AL0.07GA0.93N纳米线对CH4附近的CH4响应
3. Nanostructured flower like V2O5 thin films and its room temperature sensing characteristics [J] . Vijayakumar Y., Mani Ganesh Kumar, Reddy M. V. Ramana, CERAMICS INTERNATIONAL . 2015,第2aPta1期

机译：V2O5纳米花状薄膜及其室温感测特性
4. The Role of Oxide Defect Chemistry in the Drude and Plasmonic Response of Optical Fiber-based Sensing Layers for High-temperature Gas Sensing [C] . Jeffrey K. Wuenschell, Youngseok Jee, Paul R. Ohodnicki Jr., Conference on Oxide-based Materials and Devices . 2021

机译：氧化物缺陷化学在高温气体传感中基于光纤的光纤传感层的磨牙和等离子体响应中的作用
5. The role of native point defects and surface chemical reactions in the formation of Schottky barriers and high n-type doping in zinc oxide. [D] . Doutt, Daniel R. 2013

机译：自然点缺陷和表面化学反应在氧化锌中形成肖特基势垒和高n型掺杂中的作用。
6. Investigations on the Role of N2:(N2 + CH4) Ratio on the Growth of Hydrophobic Nanostructured Hydrogenated Carbon Nitride Thin Films by Plasma Enhanced Chemical Vapor Deposition at Low Temperature [O] . Noor Hamizah Khanis, Richard Ritikos, Shafarina Azlinda Ahmad Kamal, 2017

机译：N2：（N2 + CH4）比在低温等离子体增强化学气相沉积法生长疏水纳米结构氢化氮化碳薄膜中的作用研究
7. Spectroscopic study of native defects in the semiconductor to metal phase transition in V2O5 nanostructure [O] . Basu, Raktima, Dhara, Sandip 2018

机译：半导体到金属中的天然缺陷的光谱研究 V2O5纳米结构的相变

Role of Native Defect in Near Room Temperature CH4 Sensing Using Nanostructured V2O5

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