Electron holography determination of the growth polarity of GaN/AlGaN multi-quantum well structure

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Electron holography determination of the growth polarity of GaN/AlGaN multi-quantum well structure

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Dai Tao, Liu Yu-Zi, Zhang Ze

Acta Phys. Sin., 2006, 55(11): 5829-5834.

Abstract
A method to determine the growth polarity of GaN/AlGaN multi-quantum wells (MQWs) has been proposed. Electron holography (EH) study of the potential profiles of the multi-quantum well structure has been used here to determine the direction of build-in electric field that is strictly related to the growth polarity.

Keywords:
electron holography /

growth polarity /

polarization
Authors and contacts
Dai Tao²,

Liu Yu-Zi²,

Zhang Ze¹

(1)北京工业大学，北京 100022; (2)北京凝聚态物理国家实验室，中国科学院物理研究所北京电子显微镜实验室，北京 100080
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