A. Alwany, A. Alnakhlani, B. Hassan, M. Algradee, R. A. Fouad, A. A. Alfaqeer
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引用次数: 0
摘要
采用热蒸发技术制备了 Cu13Se52Bi35 薄膜。利用 X 射线衍射(XRD)、扫描电子显微镜(SEM)和光学透射与反射对沉积和退火样品进行了研究。X 射线衍射表明,沉积薄膜为晶体状,且样品的晶体尺寸随退火温度的升高而增大。扫描电镜图像显示,样品的形貌随退火温度的升高而变化。观察到 Cu13Se52Bi35 薄膜的光带隙(Eg)发生了直接转变,Eg 值随着退火温度的升高而降低。此外还研究了其他光学参数。
Effect of annealing temperature on the structural and optical properties of vacuum evaporated Cu13Se52Bi35 thin films
Thermal evaporation technique was used to prepare Cu13Se52Bi35 thin films. The asdeposited and annealed samples were investigated by using the X-ray diffraction (XRD), scanning electron microscopy (SEM) and optical transmission and reflection. The XRD showed that the as-deposited film is crystalline in nature, and the crystalline size of samples increased with increasing the annealing temperature. SEM images showed that the morphology of the sample changes with the annealing temperature. The direct transition of the optical band gap (Eg) of Cu13Se52Bi35 films was observed and the values of Eg decreased with increasing the annealing temperature. Other optical parameters were also investigated.
期刊介绍:
Chalcogenide Letters (CHL) has the aim to publish rapidly papers in chalcogenide field of research and
appears with twelve issues per year. The journal is open to letters, short communications and breakings news
inserted as Short Notes, in the field of chalcogenide materials either amorphous or crystalline. Short papers in
structure, properties and applications, as well as those covering special properties in nano-structured
chalcogenides are admitted.