Shape Transformation of ZnO Nanorods/Nanotubes at Low Temperature

被引：3

作者：

Brahma, Sanjaya ^{[1
]}

Nanda, K. K. ^{[1
]}

Shivashankar, S. A. ^{[1
]}

机构：

[1] Indian Inst Sci, Ctr Mat Res, Bangalore 560012, Karnataka, India

来源：

CURRENT NANOSCIENCE | 2012年 / 8卷 / 01期

关键词：

Nanostructured materials; shape transformation; ZnO; ANNEALING TEMPERATURE; OPTICAL-PROPERTIES; OXYGEN VACANCIES; THIN-FILMS; ZINC; PHOTOLUMINESCENCE; NANOPARTICLES; LUMINESCENCE; SURFACTANT; NANOWIRES;

D O I：

10.2174/157341312799362296

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

We report the shape transformation of ZnO nanorods/nanotubes at temperatures (similar to 700 degrees C) much lower than the bulk melting temperature (1975 degrees C). With increasing annealing temperature, not only does shape transformation take place but the luminescence characteristics of ZnO are also modified. It is proposed that the observed shape transformation is due to surface diffusion, contradicting the previously reported notion of melting and its link to luminescence. Luminescence in the green-to-red region is observed when excited with a blue laser, indicating the conversion of blue to white light.

引用

页码：156 / 160

页数：5

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