Exciton structure in sodium doped zinc oxide quantum dots

被引：10

作者：

Kshirsagar, Sachin D. ^{[1
]}

Nikesh, V. V. ^{[1
]}

Mahamuni, Shailaja ^{[1
]}

机构：

[1] Univ Poona, Dept Phys, Pune 411007, Maharashtra, India

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 05期

关键词：

D O I：

10.1063/1.2222334

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Photoluminescence spectra of electrochemically grown ZnO quantum dots doped with Na were studied at low temperature. Incorporation of Na in ZnO quantum dot is confirmed by the appearance of yellow photoluminescence at about 572 nm instead of commonly observable green luminescence at about 530 nm. Chemical analysis also supported the inclusion of Na in ZnO quantum dots. Rich excitonic structure was observed in photoluminescence spectra of these ZnO quantum dots. The excitonic features are analyzed in view of the published work on bulk ZnO.

引用

页数：3

共 35 条

[1] High temperature excitonic stimulated emission from ZnO epitaxial layers [J].

Bagnall, DM ;

Chen, YF ;

Zhu, Z ;

Yao, T ;

Shen, MY ;

Goto, T .

APPLIED PHYSICS LETTERS, 1998, 73 (08) :1038-1040

[2] 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

[3] Luminescence in ZnO quantum particles [J].

Bendre, BS ;

Mahamuni, S .

JOURNAL OF MATERIALS RESEARCH, 2004, 19 (03) :737-740

[4]

Boer K W., 2002, Survey of Semiconductor Physics

[5] Exciton photoluminescence of hexagonal ZnO [J].

Butkhuzi, TV ;

Chelidze, TG ;

Georgobiani, AN ;

Jashiashvili, DL ;

Khulordava, TG ;

Tsekvava, BE .

PHYSICAL REVIEW B, 1998, 58 (16) :10692-10695

[6] SINGLE AND MULTIPLE EXCITATION OF BULK AND SURFACE-PLASMONS ON CLEAN ZNO SURFACES [J].

DORN, R ;

LUTH, H .

JOURNAL OF APPLIED PHYSICS, 1976, 47 (11) :5097-5098

[7] Effects of carrier concentration on the dielectric function of ZnO:Ga and In2O3:Sn studied by spectroscopic ellipsometry: Analysis of free-carrier and band-edge absorption [J].

Fujiwara, H ;

Kondo, M .

PHYSICAL REVIEW B, 2005, 71 (07)

[8] EXCITON COMPLEXES IN II-VI MATERIALS [J].

GUTOWSKI, J .

JOURNAL OF CRYSTAL GROWTH, 1988, 86 (1-4) :528-535

[9] ACCEPTOR-EXCITON COMPLEXES IN ZNO - A COMPREHENSIVE ANALYSIS OF THEIR ELECTRONIC STATES BY HIGH-RESOLUTION MAGNETO-OPTICS AND EXCITATION SPECTROSCOPY [J].

GUTOWSKI, J ;

PRESSER, N ;

BROSER, I .

PHYSICAL REVIEW B, 1988, 38 (14) :9746-9758

[10] Photoluminescence of mechanically polished ZnO [J].

Hamby, DW ;

Lucca, DA ;

Klopfstein, MJ .

JOURNAL OF APPLIED PHYSICS, 2005, 97 (04)

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