Structural phase transformation from wurtzite to zinc-blende in uncapped CdS nanoparticles

被引：16
|
作者：
Ghosh, Anirudha [1 ]
Paul, Sanhita [1 ]
Raj, Satyabrata [1 ]
机构：
[1] Indian Inst Sci Educ & Res Kolkata, Dept Phys Sci, Nadia 741252, India
来源：
SOLID STATE COMMUNICATIONS | 2013年 / 154卷
关键词：
Nanostructures; Semiconductors; X-ray scattering; Electronic band structure; NANOCRYSTALS;
D O I：
10.1016/j.ssc.2012.10.038
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The kinetics of a first order solid-solid structural phase transformation in uncapped CdS nanocrystals has been investigated by powder x-ray diffraction. The x-ray diffraction measurements reveal that all uncapped CdS nanoparticles kept in different thermodynamic conditions like pressure and temperature undergo a structural phase transformation from wurtzite toward zinc-blende structure. The rate of transformation is higher when it is under influence of low/high pressure at room temperature as compared to other thermodynamic conditions. The total energy per atom calculated from ab-initio full-potential linearized augmented plane wave method also corroborates the validity of our experimental results. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：25 / 29
页数：5
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