{"title":"碲镉汞梯度带隙异质结构的光调节光学光谱学","authors":"O. S. Komkov, M. V. Yakushev","doi":"10.1134/s1063782624050087","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract—</h3><p>Multilayer mercury–cadmium–telluride photodetecting heterostructures grown by molecular beam epitaxy on Si and GaAs substrates were studied using the infrared photoreflectance method. Based on the period of Franz–Keldysh oscillations observed in the photoreflectance spectra, the strength of the built-in electric field near the “working layer—graded band gap near-surface layer” heterointerface was determined in a contactless way. An analytical calculation of distribution of such field over the structure depth has specified the region in which the photomodulation signal is formed. The experimentally obtained field values turned out to be higher than the calculated ones, which is explained by the influence of the photovoltaic effect.</p>","PeriodicalId":21760,"journal":{"name":"Semiconductors","volume":"188 1","pages":""},"PeriodicalIF":0.6000,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Photomodulation Optical Spectroscopy of CdHgTe Graded Band Gap Heterostructures\",\"authors\":\"O. S. Komkov, M. V. Yakushev\",\"doi\":\"10.1134/s1063782624050087\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Abstract—</h3><p>Multilayer mercury–cadmium–telluride photodetecting heterostructures grown by molecular beam epitaxy on Si and GaAs substrates were studied using the infrared photoreflectance method. Based on the period of Franz–Keldysh oscillations observed in the photoreflectance spectra, the strength of the built-in electric field near the “working layer—graded band gap near-surface layer” heterointerface was determined in a contactless way. An analytical calculation of distribution of such field over the structure depth has specified the region in which the photomodulation signal is formed. The experimentally obtained field values turned out to be higher than the calculated ones, which is explained by the influence of the photovoltaic effect.</p>\",\"PeriodicalId\":21760,\"journal\":{\"name\":\"Semiconductors\",\"volume\":\"188 1\",\"pages\":\"\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Semiconductors\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1134/s1063782624050087\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, CONDENSED MATTER\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Semiconductors","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1134/s1063782624050087","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
Photomodulation Optical Spectroscopy of CdHgTe Graded Band Gap Heterostructures
Abstract—
Multilayer mercury–cadmium–telluride photodetecting heterostructures grown by molecular beam epitaxy on Si and GaAs substrates were studied using the infrared photoreflectance method. Based on the period of Franz–Keldysh oscillations observed in the photoreflectance spectra, the strength of the built-in electric field near the “working layer—graded band gap near-surface layer” heterointerface was determined in a contactless way. An analytical calculation of distribution of such field over the structure depth has specified the region in which the photomodulation signal is formed. The experimentally obtained field values turned out to be higher than the calculated ones, which is explained by the influence of the photovoltaic effect.
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Publishes the most important work in semiconductor research in the countries of the former Soviet Union. Covers semiconductor theory, transport phenomena in semiconductors, optics, magnetooptics, and electrooptics of semiconductors, semiconductor lasers and semiconductor surface physics. The journal features an extensive book review section.
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