Exciton Luminescence Dynamics in ZnO Crystal Observed under One- and Two-Photon Excitation

被引：3

作者：

Yamamoto, Sekika ^{[1
]}

Sakuma, Hikari ^{[1
]}

Mishina, Tomobumi ^{[1
]}

机构：

[1] Hokkaido Univ, Dept Phys, Grad Sch Sci, Sapporo, Hokkaido 0600810, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2010年 / 49卷 / 12期

关键词：

HYDROTHERMAL METHOD; SINGLE-CRYSTAL; BULK ZNO; PHOTOLUMINESCENCE; GROWTH; SPECTROSCOPY; ABSORPTION; LIFETIME; GAAS;

D O I：

10.1143/JJAP.49.121102

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Free-exciton luminescence dynamics at the surface and deep inside of a ZnO single crystal are investigated by one- and two-photon excitation mothods. The free-exciton lifetime is carefully evaluated at each position by considering the excitonic diffusion effect and the trapping process inside the sample. The obtained temperature dependence of the lifetime indicates that the photon recycling effect dominates the exciton lifetime inside the sample while the K-selection rule determines the lifetime at the surface. (C) 2010 The Japan Society of Applied Physics DOI: 10.1143/JJAP.49.121102

引用

页数：4