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Two-dimensional electron gas related emissions in ZnMgO/ZnO heterostructures

Chen, Hui; Gu, Shulin; Liu, Jiagao; Ye, Jiandong; Tang, Kun; Zhu, Shunming; Zheng, Youdou

Description

Radiative recombination of two-dimensional electron gas(2DEG), induced by polarization and validated by Hall effect measurements, is investigated in ZnMgO/ZnO heterostructures grown by metal-organic chemical vapor deposition. The Mg composition, the depth profile distribution of Mg, the residual strain in ZnMgO caplayer, and the thickness of caplayer all significantly influence the 2DEG-related transitions in ZnMgO/ZnO heterostructures. Below or above ZnO donor bound exciton, three additional...[Show more]

dc.contributor.authorChen, Hui
dc.contributor.authorGu, Shulin
dc.contributor.authorLiu, Jiagao
dc.contributor.authorYe, Jiandong
dc.contributor.authorTang, Kun
dc.contributor.authorZhu, Shunming
dc.contributor.authorZheng, Youdou
dc.date.accessioned2015-12-11T01:09:55Z
dc.date.available2015-12-11T01:09:55Z
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/1885/70371
dc.description.abstractRadiative recombination of two-dimensional electron gas(2DEG), induced by polarization and validated by Hall effect measurements, is investigated in ZnMgO/ZnO heterostructures grown by metal-organic chemical vapor deposition. The Mg composition, the depth profile distribution of Mg, the residual strain in ZnMgO caplayer, and the thickness of caplayer all significantly influence the 2DEG-related transitions in ZnMgO/ZnO heterostructures. Below or above ZnO donor bound exciton, three additional broad emissions persisting up to 100 K are assigned to the spatially indirect transitions from 2DEG electrons to the photoexcited holes towards the ZnO flat-band region or remaining at the heterointerface.
dc.description.sponsorshipResearch is supported by the State Key Program for Basic Research of China under Grant No. 2011CB302003 and National Natural Science Foundation of China (Nos. 61025020 and 60990312).
dc.publisherAmerican Institute of Physics (AIP)
dc.rightshttp://www.sherpa.ac.uk/romeo/issn/0003-6951..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 11/12/15). Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at https://doi.org/10.1063/1.3662964
dc.sourceApplied Physics Letters
dc.subjectKeywords: Depth profile distributions; Donor-bound exciton; Flat band; Hall effect measurement; Hetero interfaces; Indirect transition; Photoexcited holes; Radiative recombination; Residual strains; Two-dimensional electron gas (2DEG); ZnMgO; ZnO; Crystals; Gas emi
dc.titleTwo-dimensional electron gas related emissions in ZnMgO/ZnO heterostructures
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume99
dc.date.issued2011-11-22
local.identifier.absfor091203
local.identifier.ariespublicationu4920827xPUB1
local.publisher.urlhttps://www.aip.org/
local.type.statusPublished Version
local.contributor.affiliationChen, Hui, Nanjing University, China
local.contributor.affiliationGu, Shulin, Nanjing University, China
local.contributor.affiliationLu, Jiagao, Nanjing University, China
local.contributor.affiliationYe, Jiandong, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University
local.contributor.affiliationTang, Kun, Nanjing University, China
local.contributor.affiliationZhu, Shunming, Nanjing University, China
local.contributor.affiliationZheng, Youdou, Nanjing University, China
local.bibliographicCitation.issue21
local.bibliographicCitation.startpage211906
local.bibliographicCitation.lastpage3
local.identifier.doi10.1063/1.3662964
local.identifier.absseo970102
dc.date.updated2016-02-24T11:26:31Z
local.identifier.scopusID2-s2.0-81855167414
CollectionsANU Research Publications

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