蓝宝石光纤端面上ZnO薄膜的制备及其温变光学特性  

The temperature-dependent optical properties of ZnO film deposited on sapphire fiber-ending

作　　者：隋成华[1] 蔡萍根[1] 许晓军[1] 陈乃波[2] 魏高尧[1] 周红[1] 

机构地区：[1]浙江工业大学应用物理系,杭州310032 [2]浙江工业大学之江学院理学系,杭州310024

出　　处：《物理学报》2009年第4期2792-2796,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60777034)资助的课题~~

摘　　要：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.In this paper,ZnO thin film was first grown on the sapphire fiber-ending by electron-beam evaporation,which has good morphology and high crystallization quality.The transmittance spectra showed that the sharp optical absorption edge has a red shift with increasing temperature,and the obtained temperature-dependent band gap energy for ZnO follows to the linear relation Eg（T）=3.40-4.91×10^-4T.This formula presents the key to fabricate new broad｜measurement range fiber-optic temperature sensors based on semiconductor ZnO by utilizing the optical absorption spectra at different temperatures.

关 键 词：ZNO薄膜 蓝宝石光纤 光学吸收边 光纤温度传感器 

分 类 号：O484[理学—固体物理]