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arXiv · 2104.07199

Observation of long-range carrier diffusion in InGaN quantum wells, and implications from fundamentals to devices

Aurelien David
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Abstract

Photoluminescence measurements on high-quality InGaN quantum wells reveal that carriers diffuse laterally to long distances at room temperature, up to tens of microns. This behavior, which shows a pronounced dependence on the excitation density, contrasts with the common expectation of a short diffusion length. The data is well explained by a diffusion model taking into account the full carrier recombination dynamics, obtained from time-resolved measurements. These observations have important implications for understanding the high efficiency of III-nitride emitters, but also to properly interpret photoluminescence experiments and to design efficient small-scale devices.

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BibTeXRIS

Aurelien David. 2021-04-15. Observation of long-range carrier diffusion in InGaN quantum wells, and implications from fundamentals to devices. https://doi.org/10.1103/physrevapplied.15.054015

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