论文部分内容阅读
c轴取向的AlN 具有优异的压电性和声表面波传输特性,已受到人们日益广泛的重视。文章报道了采用KrF脉冲准分子激光沉积工艺,在Si(100)衬底上成功地制备了c轴取向的AlN晶态薄膜。X射线衍射与傅里叶变换红外光谱的结果表明,在300 °C~800 °C衬底温度下,薄膜均只有(002)一个衍射峰,但随着温度的升高,薄膜的结晶质量变好;原子力显微镜对800 °C沉积薄膜观察结果显示,薄膜具有高度一致的柱状结构,平均晶粒大小为250 nm 。
The c-axis oriented AlN has excellent piezoelectricity and surface acoustic wave transmission characteristics and has drawn increasing attention by people. The article reports the successful preparation of c-axis oriented AlN crystalline thin films on Si (100) substrates by KrF pulse excimer laser deposition. X-ray diffraction and Fourier transform infrared spectroscopy results show that the film has only (002) a diffraction peak at 300 ° C ~ 800 ° C substrate temperature, but as the temperature increases, the crystalline quality of the film changes Good; Atomic Force Microscopy of the deposited film at 800 ° C The results show that the film has a highly consistent columnar structure, the average grain size of 250 nm.