摘要
用溶胶－凝胶法能够有效地制备含０．５％的具有量子尺寸效应的Ｂｉ２Ｓ３微晶掺杂硅薄膜．薄膜的室温透射光谱发现，在５００℃热处理时，随着热处理时间的延长，薄膜的特征透射谱谷会发生向长波方向的移动，作者认为这样的移动源于量子尺寸效应．本文还报道了在ＹＡＧ强激光的作用下能够观察到薄膜样品所产生的倍频信号，并讨论了产生倍频的原因．
The Bi2S3 microcrystallites doped thin film with a significant quantum size effects has been successivelly prepared by the sol-gel process from the hydrolysis of a complex solution of Si (OC2H5 )4, Bi (NO3 )3. 5H2O and SC (NH2)2. The room temperature optical transmission spectra of the films heat-treated at 500℃ for 0～120min show the evidence of quantum size effects as the red-shift of the transmission valley with longer heating time. The optical second harmonic generation.(SHG) was also observed using a Nd: YAG colliding mode locked laser with the maxium intensity of 104W/cm2.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1994年第5期518-522,共5页
Acta Optica Sinica
关键词
硫化铋
微晶掺杂
薄膜
光学性质
Bi_2S_3- doped thin film
quantum sire effects
second harmonic generation.
