文章基本信息

标题：Direct Measurement of Polarization-Induced Fields in GaN/AlN by Nano-Beam Electron Diffraction
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作者：Daniel Carvalho ; Knut Müller-Caspary ; Marco Schowalter 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2016
卷号：6
期号：1
DOI：10.1038/srep28459
语种：English
出版社：Springer Nature
摘要：The built-in piezoelectric fields in group III-nitrides can act as road blocks on the way to maximizing the efficiency of opto-electronic devices. In order to overcome this limitation, a proper characterization of these fields is necessary. In this work nano-beam electron diffraction in scanning transmission electron microscopy mode has been used to simultaneously measure the strain state and the induced piezoelectric fields in a GaN/AlN multiple quantum well system.