多采样频率闪烁单量子阱InGaN/GaN光致发光的时空分辨分析

IF 3.1 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2025-07-14 DOI:10.1016/j.cap.2025.07.003

Kotaro Oikawa , Mitsuru Funato , Yoichi Kawakami , Ruggero Micheletto

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引用次数: 0

摘要

报道了InGaN/GaN单量子阱样品光致发光（PL）中的闪烁现象。在本研究中，在30、60、120、240和480 Hz的采样频率下进行了时间分辨PL测量，并创建了空间图。我们定义了两个ON/OFF状态，并确定了这些状态在每个采样频率下的时间分布。我们发现，在提高采样率的同时，在降低采样率的情况下，可以观察到较短的闪烁状态。当我们研究不同采样率下的空间互相关图时，尽管在较高的采样率下存在这些新的闪烁频率，但图显示出明显相似的空间分布，这表明相关性是与晶体结构密切相关的特征，它是所有闪烁中心所共有的，并且在任何频率下都存在。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Time and spatially resolved analysis of single quantum well InGaN/GaN photoluminescence blinking at multiple sample frequencies

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Time and spatially resolved analysis of single quantum well InGaN/GaN photoluminescence blinking at multiple sample frequencies

A blinking phenomenon has been reported in InGaN/GaN single-quantum-well samples photoluminescence (PL). In this study, time-resolved PL measurements were performed at sampling frequencies of 30, 60, 120, 240 and 480 Hz and spatial maps were created. We defined two ON/OFF states and determined the time distribution of these states for each sampling frequency. We found that at increased sampling rates shorter blinking states were observed together with those of lower sampling rates. When we studied the spatial cross-correlation maps at the different sampling rates, despite the presence of these new blinking frequencies at higher sampling rates, the maps show evident similar spatial distribution, indicating that the correlation is a feature strongly related to the crystal structure, it is common to all blinking centers and it is present at any frequency investigated.

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.