Spatially resolved cathodoluminescence spectra of excitons in a ZnO microparticle

被引：9

作者：

Hirai, Takeshi ^{[1
]}

Ohno, Nobuhito ^{[1
]}

Harada, Yoshiyuki ^{[2
]}

Horii, Taku ^{[3
]}

Sawada, Yuji ^{[3
]}

Itoh, Tadashi ^{[3
]}

机构：

[1] Osaka Electrocommun Univ, Acad Frontier Promot Ctr, Osaka 5728530, Japan

[2] Osaka Inst Technol, Nanomat Microdevices Res Ctr, Asahi Ku, Osaka 5358585, Japan

[3] Osaka Univ, Grad Sch Engn Sci, Osaka 5608531, Japan

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 04期

基金：

日本学术振兴会; 日本科学技术振兴机构;

关键词：

D O I：

10.1063/1.2965614

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spatially resolved cathodoluminescence (CL) spectra of excitons in a ZnO microparticle, which consists of a number of small particles (primary particles), have been investigated at low temperature (15 K). The spatially resolved CL spectra can be interpreted in terms of the influence of an internal electric field, which is likely caused by transfer of electrons from donor defects to surface states near the surface, on the radiative recombination of free and bound excitons in the ZnO microparticle. (C) 2008 American Institute of Physics.

引用

页数：3

共 17 条

[1] Optically pumped lasing of ZnO at room temperature [J].

Bagnall, DM ;

Chen, YF ;

Zhu, Z ;

Yao, T ;

Koyama, S ;

Shen, MY ;

Goto, T .

APPLIED PHYSICS LETTERS, 1997, 70 (17) :2230-2232

[2] Wannier Exciton in an electric field. I. Optical absorption by bound and continuum states [J].

Blossey, Daniel F. .

PHYSICAL REVIEW B-SOLID STATE, 1970, 2 (10) :3976-3990

[3] Depth-resolved optical studies of excitonic and phonon-assisted transitions in ZnO epilayers [J].

Cho, Yong-Hoon ;

Kim, Ji-Young ;

Kwack, Ho-Sang ;

Kwon, Bong-Joon ;

Dang, Le Si ;

Ko, Hang-Ju ;

Yao, Takafumi .

APPLIED PHYSICS LETTERS, 2006, 89 (20)

[4]

Dmitruk N. L., 1978, Soviet Physics - Solid State, V20, P300

[5] Temperature dependent exciton photoluminescence of bulk ZnO [J].

Hamby, DW ;

Lucca, DA ;

Klopfstein, MJ ;

Cantwell, G .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (06) :3214-3217

[6]

Hellemans A, 1999, SCIENCE, V284, P24

[7] EFFECT OF SURFACE ELECTRIC FIELDS ON RADIATIVE RECOMBINATION IN CDS [J].

HETRICK, RE ;

YEUNG, KF .

JOURNAL OF APPLIED PHYSICS, 1971, 42 (07) :2882-&

[8] Luminescence of excitons in mesoscopic ZnO particles [J].

Hirai, T ;

Harada, Y ;

Hashimoto, S ;

Itoh, T ;

Ohno, N .

JOURNAL OF LUMINESCENCE, 2005, 112 (1-4) :196-199

[9] Luminescence of bound excitons in ZnO:Zn phosphor powders [J].

Hirai, T ;

Harada, Y ;

Hashimoto, S ;

Ohno, N ;

Itoh, T .

JOURNAL OF LUMINESCENCE, 2005, 113 (1-2) :115-120

[10] Exciton annihilation in ZnO ultrafine particles with size of 10-40 nm [J].

Hirai, Takeshi ;

Harada, Yoshiyuki ;

Hashimoto, Satoshi ;

Matsumura, Michio ;

Ohno, Nobuhito .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2007, 46 (20-24) :L522-L524

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