| 阿布力孜伊米提,帕提曼·尼扎木丁,姑力米热·吐尔地,燕音.化学通报,2017,80(9):845-851. |
| LiFe0.98 Pt0.02 PO4薄膜的光学及气敏性研究 |
| Study on optical properties and gas sensing performance of LiFe0.98Pt0.02PO4thin film |
| 投稿时间：2016-12-28 修订日期：2017-03-31 |
| DOI： |
| 中文关键词: LiFe0.98Pt0.02PO4薄膜 薄膜光波导元件 光学特性 气敏性 二甲苯检测 |
| 英文关键词:LiFe0.98Pt0.02PO4thin film thin film Optical waveguide sensing element optical properties Sensing performance Xylene detecion |
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| 中文摘要: |
| 为提高LiFePO4敏感薄膜元件的灵敏度，将铂（Pt）选为待掺杂元素，用水热法一步合成出LiFe0.98Pt0.02PO4粉末；利用旋转-甩涂法将其固定在锡掺杂玻璃光波导表面，研制出LiFe0.98Pt0.02PO4薄膜/锡掺杂玻璃光波导元件；将敏感薄膜在不同温度下热处理，通过比较各个敏感薄膜元件对苯类挥发性有机气体的响应讨论薄膜处理温度对LiFe0.98Pt0.02 PO4薄膜元件光学特性及气敏性的影响。结果显示，在450℃下处理的薄膜因具有光学透明性好、折射率高、光传播损失小等特点对苯类气体显出较大的响应；并能够检测出浓度为1×10-7-1×10-3V/V0的二甲苯气体。 当气体浓度小于1×10-6V/V0时，其它苯类气体不会对二甲苯的检测产生影响。 |
| 英文摘要: |
| Lithium iron phosphate (LiFePO4) as a semiconductor material has attracted great interest in rechargeable lithium-ion batteries and lithium ion sensor.according to the formerly report , the numerous advantages of LiFePO4 thin films, such as the excellent optical transparency, easy fabrication, high refractive index (n = 1.88), and significant response to pollutant gases like xylene (detection limit of 50 ppm) were confirmed.Here in, in order to improve the sensitivity, the Pt was selected as do-pant, the LiFe0.98Pt0.02PO4 was synthesized using hydro-thermal methods by one step, and fixed on the surface of tin diffused glass as a sensing film using spin coating methods, after then were calcinated at different temperature.The obtained thin films were characterized by refractive index, thickness, attenuation, porosity, as well as the gas sensing performances to Benzene, Toluene, and Xylene (BTXs). The experimental results indicated that, the LiFe0.98Pt0.02PO4 thin films that treated at 450℃, were displayed good transparency, high refractive index, and less attenuation, thus, the resulting sensor that, LiFe0.98Pt0.02PO4 thin film/ tin- diffused optical waveguide gas sensor exhibited higher response to BTXs. Meanwhile,the sensor exhibited reversible response to the xylene in the range of 1×10-7-1×10-3V/V0.When present in concentrations less than 1×10-6V/V0, other substances did not interfere with the detection of xylene gas. |
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