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介绍了利用电子束蒸发技术在蓝宝石光纤端面上生长具有良好表面形貌和晶体结构的ZnO薄膜方法.不同测试温度(室温至773K)条件下的透射光谱显示,蒸镀在蓝宝石光纤端面上的ZnO薄膜,其光学吸收边随温度升高而发生红移现象,且禁带宽度和热力学温度之间满足Eg(T)=3.40-4.91×10-4T的关系.这为今后进一步利用ZnO薄膜的禁带宽度检测相应的环境温度,研制以ZnO薄膜为敏感材料的新型宽量程光纤温度传感器打下了良好的基础.
The ZnO thin films with good surface topography and crystal structure grown on the end face of sapphire fiber by electron beam evaporation are introduced.The transmission spectra of ZnO thin films deposited on sapphire fiber end facets at different temperatures (room temperature to 773K) Film, the optical absorption edge shifts red with temperature, and the relationship of Eg (T) = 3.40-4.91 × 10-4T is satisfied between the forbidden band width and the thermodynamic temperature.This is the key to further use of ZnO thin film in the future Band width of the corresponding ambient temperature testing, the development of ZnO film as a sensitive material for the new wide-band optical fiber temperature sensor laid a good foundation.