INFRARED REFLECTANCE AND TRANSMISSION SPECTRA OF SEMICONDUCTING NONSTOICHIOMETRIC CDGEXAS2

作     者：HONG, KS LEE, SW SPEYER, RF 

作者机构：1. Division of Ceramic Engineering and Science New York State College of Ceramics at Alfred University 14802 Alfred NY USA 

出 版 物：《JOURNAL OF MATERIALS SCIENCE》 (材料科学杂志)

年 卷 期：1991年第26卷第11期

页      面：2907-2912页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

摘      要：The infrared reflectance and transmission spectra of amorphous CdGe(x)As2 were investigated to study the amorphous structure with varying Ge content. The mid-infrared optical absorption edges of amorphous CdGe(x)As2 with 0 x 1.2, were observed in the range 1.6-1.7-mu-m, indicating a structural similarity in short-range order throughout. Comparing the reflectance and transmission spectra of amorphous and devitrified crystalline phases established that the structures of amorphous CdGe(x)As2 transformed from the CdAs2 basic structure to the chalcopyrite (CdGeAs2) structure, as one progressed from x = 0 to x = 1.2. The infrared spectra were interpreted interactively with radial distribution function, magnetic susceptibility, density measurements, and crystallization studies. The crystallization behaviour of amorphous CdGe(x)As2 that was heat treated at different temperatures was investigated using far-infrared transmission spectra.