Quantum-size confinement of excitons in CuBr nanocrystals embedded in a polymer

被引：3
|
作者：
Oda, M [1 ]
Shen, MY [1 ]
Saito, M [1 ]
Goto, T [1 ]
机构：
[1] Tohoku Univ, Grad Sch Sci, Dept Phys, Sendai, Miyagi 9808578, Japan
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2001年 / 13卷 / 50期
关键词：
D O I：
10.1088/0953-8984/13/50/306
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Quantum-size confinement of excitons in CuBr nanocrystals embedded in polymethyl methacrylate has been studied. Both the absorption band and the photoluminescence (PL) band of the Z(1.2) free excitons in the nanocrystals show a blue-shift due to a quantum-size effect, and the Stokes shift of the PL band becomes larger with decrease in the nanocrystal size at 77 K. These blue-shifts are interpreted by application of size quantization in the exciton dispersion on the basis of Cho's k-linear theory.
引用
收藏
页码：11465 / 11472
页数：8
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