Photoluminescence study of ZnO nanocrystallites with BN capsules

被引：18

作者：

Li, JF ^{[1
]}

Yao, LZ ^{[1
]}

Cai, WL ^{[1
]}

Mo, JM ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China

来源：

ACTA PHYSICA SINICA | 2001年 / 50卷 / 08期

关键词：

photoluminescence enhancement; electronic paramagnetic resonance; ZnO/BN assemblies;

D O I：

10.7498/aps.50.1623

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This Letter describes the photoluminescence properties of ZnO nanoparticles enclosed in BN capsules (ZnO/BN core/shell structure). PL enhancement of over one thousand times of ZnO/BN compared to pure ZnO nanoparticles was observed, which is attributed to the dielectric environment effects of the capsule on the interfacial structures and defect amounts of ZnO quantum dots.

引用

页码：1623 / 1626

页数：4

共 21 条

[1] Semiconductor clusters, nanocrystals, and quantum dots [J].

Alivisatos, AP .

SCIENCE, 1996, 271 (5251) :933-937

[2] QUANTUM CRYSTALLITES AND NONLINEAR OPTICS [J].

BRUS, L .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1991, 53 (06) :465-474

[3]

Guo ZS, 2000, CHINESE PHYS, V9, P384, DOI 10.1088/1009-1963/9/5/013

[4]

HAPS M, 1988, J PHYS CHEM-US, V92, P482

[5] Formation of gold and iron oxide nanoparticles encapsulated in boron nitride sheets [J].

Hirano, T ;

Oku, T ;

Suganuma, K .

JOURNAL OF MATERIALS CHEMISTRY, 1999, 9 (04) :855-857

[6]

Jursenas S, 1997, APPL PHYS LETT, V71, P2502, DOI 10.1063/1.120101

[7] POINT-DEFECTS AND LUMINESCENCE-CENTERS IN ZINC-OXIDE AND ZINC-OXIDE DOPED WITH MANGANESE [J].

LIU, M ;

KITAI, AH ;

MASCHER, P .

JOURNAL OF LUMINESCENCE, 1992, 54 (01) :35-42

[8] Synthesis of BN-coated CeO2 fine powder as a new UV blocking material [J].

Masui, T ;

Yamamoto, M ;

Sakata, T ;

Mori, H ;

Adachi, G .

JOURNAL OF MATERIALS CHEMISTRY, 2000, 10 (02) :353-357

[9] Size dependence of the dissolution of ZnO nanoparticles [J].

Meulenkamp, EA .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (40) :7764-7769

[10] Synthesis and growth of ZnO nanoparticles [J].

Meulenkamp, EA .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (29) :5566-5572

← 1 2 3 →