Exciton dynamics in PbI2 ultra-thin microcrystallites

被引：0
|
作者：
Yamamoto, A [1 ]
Nakahara, H
Yano, S
Goto, T
Kasuya, A
机构：
[1] Tohoku Univ, Grad Sch Sci, Dept Phys, Sendai, Miyagi 9808578, Japan
[2] RIKEN, Photodynam Res Ctr, Sendai, Miyagi 9800868, Japan
[3] Tohoku Univ, Interdisciplinary Res Ctr, Sendai, Miyagi 9808579, Japan
来源：
PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 2001年 / 224卷 / 01期
关键词：
D O I：
10.1002/1521-3951(200103)224:1<301::AID-PSSB301>3.0.CO;2-N
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Temporal change of absorption spectra in PhI2 ultra-thin microcrystallites (UTMs) have been studied by a pump-probe method with a sub-picosecond pulse laser. In the differential absorption spectra we have found saturation, blue shift and broadening of exciton absorption bands. The lifetime of the free exciton tends to decrease with decreasing layer thickness. The dynamical process of the electronic states is discussed.
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收藏
页码：301 / 305
页数：5
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