IHEP OpenIR  > 北京同步辐射装置
Alloying induced disorder and localized excitonic states in ternary BexZn1-xO thin films
BSRF用户
2021
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
EISSN1873-4669
Volume874Pages:159867
SubtypeArticle
AbstractII-VI ternary alloy is a promising material for advanced optoelectronic devices like ultraviolet (UV) photodetectors, light emitting diodes and laser diodes with high efficiency and low fabrication cost. The precise control over the doping element, concentration and crystal quality allows careful tuning of their band structures for novel optoelectronic properties. In this work, we report a prominent two-mode behavior in ternary BexZn1-xO alloy using resonant Raman spectroscopy as a probe. By combining with the excitonic localization and extrinsic Frohlich interaction, we present a theoretical analysis on the resonant Raman scattering with different Be concentrations and tunable measured temperatures. Frequency blue shifts caused by compressed stress and two-mode phonons (ZnO-like and BeO-like A(1)(LO) phonons) scattering up to third orders revealed in this novel ternary alloy. In addition, alloying induced disorder and electronic states in the forbidden band result in the broadening of line width and the enhancement of LO-phonon oscillator strength. As a result, a high performance BeZnO based photoconductive type UV photodetector was realized, indicating the potential of BeZnO as a promising material for optoelectronic devices. (C) 2021 Elsevier B.V. All rights reserved.
DOI10.1016/j.jallcom.2021.159867
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000653090800006
ItemNoBSRF00270
beamlineXAFS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/293038
Collection北京同步辐射装置
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BSRF用户. Alloying induced disorder and localized excitonic states in ternary BexZn1-xO thin films[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,874:159867.
APA BSRF用户.(2021).Alloying induced disorder and localized excitonic states in ternary BexZn1-xO thin films.JOURNAL OF ALLOYS AND COMPOUNDS,874,159867.
MLA BSRF用户."Alloying induced disorder and localized excitonic states in ternary BexZn1-xO thin films".JOURNAL OF ALLOYS AND COMPOUNDS 874(2021):159867.
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