硫化镉微晶掺杂玻璃及薄膜的制备与光学性能的研究  

PREPARATION AND OPTICAL PROPERTIES OF THE CdS MICROCRYSTALLITES DOPED GLASS AND THIN FILM

作　　者：叶辉[1] 何迪洁[1] 姜中宏[1] 

机构地区：[1]中国科学院上海光学精密机械研究所

出　　处：《硅酸盐学报》1994年第5期434-439,共6页Journal of The Chinese Ceramic Society

摘　　要：用溶胶－凝胶法制备了硫化镉微晶掺杂玻璃和薄膜材料，使用了三种不同的方法引入所需的Ｓ￣２离子，通过Ｘ射线和透射电镜等实验手段，分析了微晶结构显微相，标定出晶体确为ＣｄＳ，并测得微晶的尺寸。从室温吸收光谱上观察到吸收截止边随着ＣｄＯ掺杂凝胶在１５０℃时通Ｈ＿２Ｓ气体时间的延长（１～８ｈ）而移向长波方向，从而确其为量子尺寸效应的实验依据。在Ｎｄ：ＹＡＧ强激光光场的作用下，薄膜样品中观察到二次谐波信号，并分析了二次谐波发生的机理。The CdS microcrystallites doped glass lump and thin film with a significant quantum size effect have been success fully prepared by the Sol-gel process.The type and size of the microcrystallites were determined by X-ray diffraction and HRTEM. The optical absorption spectra of the CdO glass sample at room temperature reacted with H_2S gas at 150℃ 1～8h give an evidence of quantum size effect as the ab-sorptionedges shift with the reacting time. The optical second harmonic signal was observed using a ND:YAG laser,The mechanism of SHG was discussed.

关 键 词：硫化镉 掺杂 光学性能 微晶玻璃 

分 类 号：TQ171.733[化学工程—玻璃工业]