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arXiv 2104.07199cond-mat.mtrl-sciphysics.app-ph
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InGaN量子阱中载流子长程扩散的观测及其对器件的影响

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

Aurelien David

摘要:

高质量InGaN量子阱的光致发光测量显示,载流子在室温下横向扩散到长距离,高达数十微米。这种行为,这表明了一个显着的依赖于激发密度,与一个短的扩散长度的共同期望。的数据是很好地解释了扩散模型考虑到充分的载流子复合动力学,从时间分辨测量。这些观测结果对于理解III族氮化物发射体的高效率具有重要意义,而且对于正确解释光致发光实验和设计高效的小型设备也具有重要意义。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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