Size-dependent picosecond energy relaxation in PbSe quantum dots

被引：34
|
作者：
Okuno, T [1 ]
Masumoto, Y
Ikezawa, M
Ogawa, T
Lipovskii, AA
机构：
[1] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan
[2] St Petersburg State Tech Univ, St Petersburg 195251, Russia
来源：
APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 04期
关键词：
D O I：
10.1063/1.127025
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We measured the size dependence of the energy relaxation time of PbSe quantum dots at room temperature. The radius of the dots was evaluated by small-angle x-ray scattering. We found a monotonic decrease of the relaxation time from 25 to 1 ps with a decrease of the radius r from 2.9 to 1.4 nm. The 1/r(3) dependence of the relaxation rate was indicated. (C) 2000 American Institute of Physics. [S0003- 6951(00)00230-8].
引用
收藏
页码：504 / 506
页数：3
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