The formation of multiply twinning structure and photo luminescence of well-dispersed nanodiamonds produced by pulsed-laser irradiation

被引：44

作者：

Hu, Shengliang ^{[1
]}

Sun, Jing ^{[1
]}

Du, Xiwen ^{[1
]}

Tian, Fei ^{[1
]}

Jiang, Lei ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China

来源：

基金：

中国国家自然科学基金;

关键词：

diamond crystal; single crystal growth; high resolutions electron microscopy;

D O I：

10.1016/j.diamond.2007.11.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The multiply twinning structure (NITS) of nanodiamonds synthesized by pulsed-laser irradiation was investigated theoretically and experimentally. The thermodynamic calculation shows NITS is more stable than single crystal structure (SCS) in a certain size range and statistical results experimentally accords with the theory. A mechanism on the formation of MTS in nanodiamonds was proposed based on Transmission Electron Microscopy (TEM) observation, in which SCS successively grows into MTS through intermediate states, such as simple twin and triple twin. Furthermore, the dispersive nanodiamonds exhibit strong photoluminescence (PL) after surface passivation. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：142 / 146

页数：5

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