Morphological evolution and growth mechanism of hierarchical structure of PbTe films grown by off-axis magnetron co-sputtering

被引：10
作者：
Si, Jianxiao [1 ,2 ]
Zhao, Ji [1 ]
Ding, Guangchao [1 ]
Wu, Haifei [3 ]
机构：
[1] Zhejiang Normal Univ, Coll Math Phys & Informat Engn, Jinhua 321004, Peoples R China
[2] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
[3] Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2014年 / 321卷
基金：
中国国家自然科学基金;
关键词：
Lead Telluride thin film; Morphology; Growth mechanism; Sputtering; SHAPE EVOLUTION; PBSE; NANOWIRES; SURFACE;
D O I：
10.1016/j.apsusc.2014.10.027
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The morphological evolution of PbTe thin films grown by off-axis co-sputtering was studied. The hierarchical structures with various shapes including pyramids, truncated octahedrons, triangular shape plates and flower shape mounds were formed on the surface by adjusting the co-sputter Telluride (Te) flux and substrate temperatures. The pyramids were favor to form under low co-sputter Te flux (<0.06 angstrom/s) at any growth temperatures between 150 degrees C and 320 degrees C. The columnar growth mode was proposed to explain the pyramid formation. The shape transitions from pyramids to truncated octahedrons and triangular shape plates were gradually taking place with the Te flux increased from 0.13 angstrom/s to 0.4 angstrom/s. The evolution was mainly attributed to the change in the ratio of growth rate between the {1 1 1} and {1 0 0} planes. The origin of flower shape mounds may be relative to the kinetic growth of these crystal habits of PbTe due to low mobility at 220 degrees C. (C) 2014 Elsevier B.V. All rights reserved.
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收藏
页码：233 / 239
页数：7
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