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Carrier Dynamics in InGaN/GaN on the Basis of Different In Concentrations
Version 1
: Received: 26 March 2019 / Approved: 27 March 2019 / Online: 27 March 2019 (09:10:51 CET)
A peer-reviewed article of this Preprint also exists.
Ye, Z.T.; Nguyen, H.T.; Feng, S.-W.; Wang, H.-C.; Chou, H.-L. Carrier Dynamics in InGaN/GaN on the Basis of Different In Concentrations. Appl. Sci. 2019, 9, 2279. Ye, Z.T.; Nguyen, H.T.; Feng, S.-W.; Wang, H.-C.; Chou, H.-L. Carrier Dynamics in InGaN/GaN on the Basis of Different In Concentrations. Appl. Sci. 2019, 9, 2279.
Abstract
InGaN/GaN samples grown on c-plane sapphire substrate with different In concentrations by metal organic chemical vapor deposition are demonstrated. The subsequent capping GaN layer growth opens a possibility for dislocation reduction due to the lateral strain relaxation in growth geometry. We present the further growth optimization and innovative characterization of InGaN layers overgrown on different structures with varying In concentrations. The photoelectrical and optical properties of the InGaN layers with or without capping GaN layer were investigated by time-resolved picosecond transient grating and temperature dependence photoluminescence. We note a 10-fold increase in carrier lifetime in the InGaN layers when the sample structure changes from PIN to single InGaN layer.
Keywords
carrier dynamics; InGaN; four-wave maxing; solar cell; transient grating
Subject
Physical Sciences, Condensed Matter Physics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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