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OALib Journal期刊
ISSN: 2333-9721
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多孔硅表面氧化钒热敏电阻薄膜的阻温特性
Abstract:
？用电化学腐蚀法制备了具有不同导热系数的多孔硅样品(孔隙率为80%±2、厚度为110μm时,导热系数可降低至0.20w/m·k),并在其表面沉积了氧化钒热敏薄膜,研究了多孔硅样品的热绝缘性能对氧化钒热敏薄膜阻温特性的影响.结果表明:多孔硅良好的热绝缘性使在其表面制备的氧化钒热敏薄膜电阻的灵敏度远高于在硅基底上制备的热敏电阻的(多孔硅和硅片上的氧化钒薄膜电阻随功率变化斜率分别为120kω/μw和2.1kω/μw),且热敏电阻的灵敏度随着多孔硅孔隙率和厚度的增大而升高.
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