Quantum dot emission from site-controlled InGaN/GaN micropyramid arrays

P.R. Edwards, R.W. Martin, I.M. Watson, C. Liu, R.A. Taylor, J.H. Rice, J.H. Na, J.W. Robinson, J.D. Smith

Research output: Contribution to journalArticle

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Abstract

InxGa1−xN quantum dots have been fabricated by the selective growth of GaN micropyramid arrays topped with InGaN/GaN quantum wells. The spatially, spectrally, and time-resolved emission properties of these structures were measured using cathodoluminescence hyperspectral imaging and low-temperature microphotoluminescence spectroscopy. The presence of InGaN quantum dots was confirmed directly by the observation of sharp peaks in the emission spectrum at the pyramid apices. These luminescence peaks exhibit decay lifetimes of approximately 0.5 ns, with linewidths down to 650 meV
LanguageEnglish
Pages4281-4283
Number of pages3
JournalApplied Physics Letters
Volume85
Issue number19
DOIs
Publication statusPublished - 8 Nov 2004

Fingerprint

quantum dots
pyramids
cathodoluminescence
apexes
emission spectra
quantum wells
luminescence
life (durability)
decay
spectroscopy
temperature

Keywords

  • quantum dot emission
  • InGaN/GaN micropyramid arrays
  • nanoscience

Cite this

Edwards, P.R. ; Martin, R.W. ; Watson, I.M. ; Liu, C. ; Taylor, R.A. ; Rice, J.H. ; Na, J.H. ; Robinson, J.W. ; Smith, J.D. / Quantum dot emission from site-controlled InGaN/GaN micropyramid arrays. In: Applied Physics Letters. 2004 ; Vol. 85, No. 19. pp. 4281-4283.
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Edwards, PR, Martin, RW, Watson, IM, Liu, C, Taylor, RA, Rice, JH, Na, JH, Robinson, JW & Smith, JD 2004, 'Quantum dot emission from site-controlled InGaN/GaN micropyramid arrays' Applied Physics Letters, vol. 85, no. 19, pp. 4281-4283. https://doi.org/10.1063/1.1815043

Quantum dot emission from site-controlled InGaN/GaN micropyramid arrays. / Edwards, P.R.; Martin, R.W.; Watson, I.M.; Liu, C.; Taylor, R.A.; Rice, J.H.; Na, J.H.; Robinson, J.W.; Smith, J.D.

In: Applied Physics Letters, Vol. 85, No. 19, 08.11.2004, p. 4281-4283.

Research output: Contribution to journalArticle

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T1 - Quantum dot emission from site-controlled InGaN/GaN micropyramid arrays

AU - Edwards, P.R.

AU - Martin, R.W.

AU - Watson, I.M.

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AU - Taylor, R.A.

AU - Rice, J.H.

AU - Na, J.H.

AU - Robinson, J.W.

AU - Smith, J.D.

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KW - quantum dot emission

KW - InGaN/GaN micropyramid arrays

KW - nanoscience

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SN - 0003-6951

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