Growth structure, and optical properties of III-nitride quantum dots

H Morkoc, A Neogi, M Kuball

Research output: Contribution to journalArticle (Academic Journal)

Abstract

Quasi-zero-dimensional (OD) semiconductors have been the subject of considerable interest which is stemmed from their unique physical properties which in turn are conducive to devices such as low threshold lasers and light polarization insensitive detectors, in addition to exciting basic physical phenomena. A laboratory analogue of OD systems is semiconductor quantum dots (QDs) wherein the electronic states are spatially localized and the energy is fully quantized, loosely similar to an atomic system, making it more stable against thermal perturbations. In addition, the electronic density of states near the band gap is higher than in 3D and 2D systems, leading to a higher probability for optical transitions. Furthermore, the electron localization may dramatically reduce the scattering of electrons by bulk defects and reduce the rate of non-radiative recombination. Semiconductor based and metal based dots have been produced, the former via self-assembly and also by lithographic methods in many II-VI, III-V, and group IV semiconductor. The aim of this paper is focused on HI-Nitride based quantum dots covering their production and optical properties, as well as reporting on the GaN quantum dots produced by molecular beam epitaxy utilizing standard, ripening, metal spray followed by nitridation methods.
Translated title of the contributionGrowth structure, and optical properties of III-nitride quantum dots
Original languageEnglish
Pages (from-to)145 - 163
Number of pages19
JournalMaterial Research Society Symposium Proceedings
Volume794
Publication statusPublished - 2004

Bibliographical note

ISBN: 1558997326
Publisher: Material Research Society
Name and Venue of Conference: Symposium on Self-Organized Processes in Semiconductor Epitaxy held at the MRS Fall Meeting December 2003, Boston
Conference Organiser: Material Research Society

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