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Molecular beam epitaxy-grown wurtzite MgS thin films for solar-blind ultra-violet detection
Lai Y.H.3; He Q.L.3; Cheung W.Y.2; Lok S.K.2; Wong K.S.2; Ho S.K.1; Tam K.W.1; Sou I.K.2
2013-04-29
Source PublicationApplied Physics Letters
ISSN00036951
Volume102Issue:17
Abstract

Molecular beam epitaxy grown MgS on GaAs(111)B substrate was resulted in wurtzite phase, as demonstrated by detailed structural characterizations. Phenomenological arguments were used to account for why wurtzite phase is preferred over zincblende phase or its most stable rocksalt phase. Results of photoresponse and reflectance measurements performed on wurtzite MgS photodiodes suggest a direct bandgap at around 5.1 eV. Their response peaks at 245 nm with quantum efficiency of 9.9 and enjoys rejection of more than three orders at 320 nm and close to five orders at longer wavelengths, proving the photodiodes highly competitive in solar-blind ultraviolet detection. © 2013 AIP Publishing LLC.

DOI10.1063/1.4803000
URLView the original
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000318553000004
PublisherAMER INST PHYSICS, CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA Journal Information
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Cited Times [WOS]:6   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.Universidade de Macau
2.Hong Kong University of Science and Technology, William Mong Institute of Nano Science & Technology
3.Hong Kong University of Science and Technology
Recommended Citation
GB/T 7714
Lai Y.H.,He Q.L.,Cheung W.Y.,et al. Molecular beam epitaxy-grown wurtzite MgS thin films for solar-blind ultra-violet detection[J]. Applied Physics Letters,2013,102(17).
APA Lai Y.H..,He Q.L..,Cheung W.Y..,Lok S.K..,Wong K.S..,...&Sou I.K..(2013).Molecular beam epitaxy-grown wurtzite MgS thin films for solar-blind ultra-violet detection.Applied Physics Letters,102(17).
MLA Lai Y.H.,et al."Molecular beam epitaxy-grown wurtzite MgS thin films for solar-blind ultra-violet detection".Applied Physics Letters 102.17(2013).
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