Growth and characterisation of InAs/GaAs quantum dots grown by MOCVD

Kallista Sears*, Jenny Wong-Leung, Manuela Buda, H. H. Tan, C. Jagadish

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    11 Citations (Scopus)

    Abstract

    InAs/GaAs quantum dots (QDs) were grown by low pressure Metal-Organic Chemical Vapour Deposition in the Stranski-Krastanow growth mode. We describe the influence of growth parameters such as coverage, the V/III ratio, growth temperature and growth interrupts on the QD nucleation and the importance of avoiding formation of larger islands which are particularly susceptible to dislocations. After an extensive study of these growth parameters we are now able to achieve device quality InAs/GaAs QDs with a density of 3×10 10cm-2. Three layers of these QDs have been incorporated into a thin p-clad laser structure which lases from an excited state due to high absorption loss and insufficient ground state gain.

    Original languageEnglish
    Title of host publicationCOMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices -Proceedings
    Pages1-4
    Number of pages4
    DOIs
    Publication statusPublished - 2005
    EventCOMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices - Bribane, QLD, Australia
    Duration: 8 Dec 200410 Dec 2004

    Publication series

    NameConference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD

    Conference

    ConferenceCOMMAD04 - 2004 Conference on Optoelectronic and Microelectronic Materials and Devices
    Country/TerritoryAustralia
    CityBribane, QLD
    Period8/12/0410/12/04

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