Mg doping concentration influenced by the polarity of the GaN layer in InGaN/GaN superlattice structures

Yen Lin Lai, Regime Chen, Chuan Pu Liu, Yo Way Lin

研究成果: Paper同行評審

摘要

The polarity of InGaN/GaN supeilattice structures grown on c-plane sapphires by metal-organic chemical vapor deposition (MOCVD) comprised of an GaN buffer layer doped with different impurities is studied. Photoluminescence (PL) was employed to determined the emitting characteristics of the samples. Secondary ion mass spectroscopy was used to examine the concentration of the constituents along the growth direction. Convergent beam electron diffraction (CBED) was used to determine the symmetry of the crystal. In addition, the polarity of the samples was also demonstrated by a simpler method of chemical etching in a KOH aqueous solution compared with the analysis of the CBED pattern. Our central results show that the variety of dopants in the GaN buffer layer would determine the polarity of the top GaN layer, which then influence the emitting performance of the InGaN/GaN superlattices.

原文English
頁面174-178
頁數5
出版狀態Published - 2003 1月 1
事件State-of-the-Art Program on Compound Semiconductors XXXIX and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics IV - Proceedings of the Intenational Symposium - Orlando,FL, United States
持續時間: 2003 10月 122003 10月 17

Other

OtherState-of-the-Art Program on Compound Semiconductors XXXIX and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics IV - Proceedings of the Intenational Symposium
國家/地區United States
城市Orlando,FL
期間03-10-1203-10-17

All Science Journal Classification (ASJC) codes

  • 電化學

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