Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/50610
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dc.titleWidely tunable intersubband energy spacing of self-assembled InAs/GaAs quantum dots due to interface intermixing
dc.contributor.authorWang, X.C.
dc.contributor.authorXu, S.J.
dc.contributor.authorChua, S.J.
dc.contributor.authorZhang, Z.H.
dc.contributor.authorFan, W.J.
dc.contributor.authorWang, C.H.
dc.contributor.authorJiang, J.
dc.contributor.authorXie, X.G.
dc.date.accessioned2014-04-23T03:01:14Z
dc.date.available2014-04-23T03:01:14Z
dc.date.issued1999-09
dc.identifier.citationWang, X.C.,Xu, S.J.,Chua, S.J.,Zhang, Z.H.,Fan, W.J.,Wang, C.H.,Jiang, J.,Xie, X.G. (1999-09). Widely tunable intersubband energy spacing of self-assembled InAs/GaAs quantum dots due to interface intermixing. Journal of Applied Physics 86 (5) : 2687-2690. ScholarBank@NUS Repository.
dc.identifier.issn00218979
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/50610
dc.description.abstractThe effect of rapid thermal annealing (RTA) on the optical properties of the self-assembled InAs/GaAs quantum dots (QD) by using photoluminescence techniques is studied experimentally. Significant reduction of the energy spacing between ground state and excited state emissions was observed. The high resolution X-ray diffraction (HRXRD) experiments show strong evidence of the interface atoms interdiffusion. Results show that postgrowth RTA can be used to widely tune the intersubband energy spacing between the ground state and the excited state of the InAs/GaAs QD. This gives a range in wavelength tunability for applications like infrared detectors and lasers based on intersubband transitions.
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentELECTRICAL ENGINEERING
dc.contributor.departmentINST OF MATERIALS RESEARCH & ENGINEERING
dc.description.sourcetitleJournal of Applied Physics
dc.description.volume86
dc.description.issue5
dc.description.page2687-2690
dc.description.codenJAPIA
dc.identifier.isiutNOT_IN_WOS
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