標題: Chemical polishing method of GaAs specimens for transmission electron microscopy
作者: Wu, Yue-Han
Chang, Li
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Specimen preparation;Chemical polishing;GaAS-based materials
公開日期: 1-一月-2010
摘要: A practical method for transmission electron microscopy specimen preparation of GaAs-based materials with quantum dot structures is presented to show that high-quality image observations in high-resolution transmission electron microscopy (HRTEM) can be effectively obtained. Specimens were prepared in plan-view and cross-section using ion milling, followed by two-steps chemical fine polishing with an ammonia solution (NH(4)OH) and a dilute H(2)SO(4) solution. Measurements of electron energy loss spectroscopy (EELS) and atomic force microscopy (AFM) proved that clean and flat specimens can be obtained without chemical residues. HRTEM images show that the amorphous regions of carbon and GaAs can be significantly reduced to enhance the contrast of lattice images of GaAs-based quantum structure. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.micron.2009.07.011
http://hdl.handle.net/11536/6092
ISSN: 0968-4328
DOI: 10.1016/j.micron.2009.07.011
期刊: MICRON
Volume: 41
Issue: 1
起始頁: 20
結束頁: 25
顯示於類別:期刊論文


文件中的檔案:

  1. 000272089800004.pdf