光致发光
光谱学
时间分辨光谱学
信号(编程语言)
材料科学
信号处理
核磁共振
分析化学(期刊)
光电子学
计算机科学
化学
物理
数字信号处理
天文
色谱法
计算机硬件
程序设计语言
作者
K. Grodecki,K. Murawski,Jarosław Rutkowski,Andrzej Kowalewski,Jan Sobieski
出处
期刊:Opto-electronics Review
[Elsevier]
日期:2024-01-03
被引量:1
标识
DOI:10.24425/opelre.2021.139038
摘要
Accurate determination of material parameters, such as carrier lifetimes and defect activation energy, is a significant problem in the technology of infrared detectors.Among many different techniques, using the time resolved photoluminescence spectroscopy allows to determine the narrow energy gap materials, as well as their time dynamics.In this technique, it is possible to observe time dynamics of all processes in the measured sample as in a streak camera.In this article, the signal processing for the above technique for Hg1-xCdxTe with a composition x of about 0.3 which plays an extremely important role in the mid-infrared is presented.Machine learning algorithms based on the independent components analysis were used to determine components of the analyzed data series.Two different filtering techniques were investigated.In the article, it is shown how to reduce noise using the independent components analysis and what are the advantages, as well as disadvantages, of selected methods of the independent components analysis filtering.The proposed method might allow to distinguish, based on the analysis of photoluminescence spectra, the location of typical defect levels in HgCdTe described in the literature.
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