镶嵌于玻璃中的CdSe1-xSx量子点的电调制光谱测量

被引：2

作者：

王引书

王若桢

机构：

[1] 北京师范大学物理系

[2] 北京师范大学物理系北京

[3] 北京

来源：

光学技术 | 2002年 / 05期

关键词：

CdSe1xSx量子点; 电调制光谱; 偏置交流电场;

D O I：

10.13741/j.cnki.11-1879/o4.2002.05.025

中图分类号：

O472.3 [];

学科分类号：

070205 ; 080501 ; 0809 ; 080903 ;

摘要：

采用直流偏置的交流调制电场测量了玻璃中各向同性的CdSe1 xSx 量子点的电调制光谱 ,介绍了各向同性材料电调制光谱的测量方法 ,分析了与一般电调制光谱测量方法不同的原因。采用偏置后的交流调制电场 ,可以检测到与电场同频率 ( 1f)而位相差 90°的CdSe1 xSx 量子点的电吸收信号 ,该信号比采用二倍频检测 ( 2 f)的信号大一个数量级 ,比通常采用正弦波调制电场的信号大 3个数量级。采用直流偏置调制电场有利于各向同性材料的电光性能的测量

引用

页码：462 / 464

页数：3

共 13 条

[1]

Elective field modulation of optical absorption in CdSe nanocrystals. Colvin V L,Cuningham K L,Alivisatos A P. The Journal of Chemical Physics . 1994

[2]

Quantum confined stark effect in very small semiconductor crystallites. Hache F,Ricard D,Flytzanis C. Applied Physics Letters . 1989

[3]

The effects of modulated electric field form and frequency on the electro-optical properties of CdS 0. 1 Se0. 9 nanocrystals. Wang Y S,Wang R Z,Sun P,et al. Journal of Applied Physics . 2000

[4]

The effects of modulated electric field form and frequency on the electro-optical properties of CdS 0. 1 Se0. 9 nanocrystals. Wang Y S,Wang R Z,Sun P,et al. Journal of Applied Physics . 2000

[5]

Nonlinear optical properties of semiconductor nanocrystals. Banfi G P,Degiorgio V,Ricard D. Advances in Physics . 1998

[6]

Optical properties of CdSe nanocrystals in polymer matrix. Firth A V,Cole-Hamilton D J,Allen J W. Applied Physics Letters . 1999

[7]

Observation of three electronic transitions in Cd(S, Se) by modulated spectroscopy. Stokes K L,Yukeslici H,Persans P D. Solid State Communications . 1994

[8]

Size-dependent electroabsorption of semiconductor microcrystallites in glass. Cotter D,Girdlestone H P,moulding K. Applied Physics Letters . 1991

[9]

Excited states and size-dependent electrooptical properties of CdS1-xSex. Stokes K L,Persans P D. Physiological Reviews . 1996

[10]

Optical properties of semiconductors nanocrystals. Gaponenko S V. . 1998

← 1 2 →