Quantum dot emission from site-controlled ngan/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

doi:10.1063/1.1815043

Quantum dot emission from site-controlled ngan/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

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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

Original language	English
Pages (from-to)	4281-4283
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	19
DOIs	https://doi.org/10.1063/1.1815043
Publication status	Published - 8 Nov 2004

Keywords

quantum dot emission
InGaN/GaN micropyramid arrays
nanoscience

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Edwards-etal-apl2004-quantumdot-emission-ingan-gan-micropyramid-arraysAccepted author manuscript, 418 KB

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title = "Quantum dot emission from site-controlled ngan/gan micropyramid arrays",

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",

keywords = "quantum dot emission, InGaN/GaN micropyramid arrays, nanoscience",

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

year = "2004",

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doi = "10.1063/1.1815043",

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T1 - Quantum dot emission from site-controlled ngan/gan micropyramid arrays

AU - Edwards, P.R.

AU - Martin, R.W.

AU - Watson, I.M.

AU - Liu, C.

AU - Taylor, R.A.

AU - Rice, J.H.

AU - Na, J.H.

AU - Robinson, J.W.

AU - Smith, J.D.

PY - 2004/11/8

Y1 - 2004/11/8

N2 - 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

AB - 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

KW - quantum dot emission

KW - InGaN/GaN micropyramid arrays

KW - nanoscience

U2 - 10.1063/1.1815043

DO - 10.1063/1.1815043

M3 - Article

SN - 0003-6951

VL - 85

SP - 4281

EP - 4283

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

ER -

Quantum dot emission from site-controlled ngan/gan micropyramid arrays

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