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溅射气压对ZnO透明导电薄膜光电性能的影响
Effects of sputtering pressure on electrical and optical properties of transparent conducting ZnO thin film
【摘要】 采用射频磁控溅射方法,在普通玻璃上制备了具有高度c轴取向的ZnO薄膜,研究了溅射气压(0.2~1.5Pa)对ZnO薄膜的微观结构和光电性能的影响。AFM、XRD、UV-Vis分光光度计及四探针法研究表明:随着溅射气压的增大,ZnO薄膜沿c轴方向的结晶质量提高,晶粒细化,薄膜表面更加致密,晶粒大小更加均匀;ZnO薄膜在400~900nm范围内的平均透过率均高于85%,其中在0.5~1.5Pa范围内其透过率高于90%;样品在高纯氮气气氛中经350℃,300s退火后,电阻率最低达到10-2Ω·cm量级。
【Abstract】 ZnO thin films were deposited on glass substrate using the reactive radio-frequency(RF) magnetron sputtering method.The influences of pressure on the surface morphology,the electrical and optical properties were studied by AFM,XRD,UV-Vis spectrophoto meter and four-probe method.The experimental results indicate that the crystalline quality of ZnO thin film is improved and the thin film shows higher c-axis orientation with increasing the pressure.The average transparency of ZnO thin films is higher than 85% in the range of 400~900 nm under different pressures,and the average transparency is higher than 90% at the pressure between 0.5~1.5 Pa.After annealing at 350 ℃ for 300 s under N2 ambient,the lowest resistivity is 10-2Ω·cm.
【Key words】 radio-frequency magnetron sputtering; ZnO thin film; sputtering pressure; transparent conducting thin film;
- 【文献出处】 中国有色金属学报 ,The Chinese Journal of Nonferrous Metals , 编辑部邮箱 ,2009年07期
- 【分类号】O484
- 【被引频次】19
- 【下载频次】324