Intermixing induced changes in the radiative emission from III-V quantum dots

C. Lobo; R. Leon; S. Fafard; P. G. Piva

doi:10.1063/1.121478

Intermixing induced changes in the radiative emission from III-V quantum dots

C. Lobo^*, R. Leon, S. Fafard, P. G. Piva

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

57 Citations (Scopus)

Abstract

We have examined the effect of thermally induced interdiffusion on the luminescence emission from red and infrared emitting self-assembled III-V quantum dots. Three different combinations of dot/barrier materials have been investigated: InAlAs/AlGaAs, InGaAs/AlGaAs and InGaAs/GaAs. In all cases, thermal intermixing was found to result in significant blueshifts of the photoluminescence (PL) emission. In addition, narrowing of the linewidth of the inhomogeneously broadened PL peak was observed. Both effects were found to be strongly dependent on the material system and average dot size. InAlAs/AlGaAs quantum dots exhibited the greatest linewidth reduction after intermixing, indicating this to be a promising method of achieving narrower luminescence lines for devices such as red-emitting zero-dimensional lasers.

Original language	English
Pages (from-to)	2850-2852
Number of pages	3
Journal	Applied Physics Letters
Volume	72
Issue number	22
DOIs	https://doi.org/10.1063/1.121478
Publication status	Published - 1998

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10.1063/1.121478

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title = "Intermixing induced changes in the radiative emission from III-V quantum dots",

abstract = "We have examined the effect of thermally induced interdiffusion on the luminescence emission from red and infrared emitting self-assembled III-V quantum dots. Three different combinations of dot/barrier materials have been investigated: InAlAs/AlGaAs, InGaAs/AlGaAs and InGaAs/GaAs. In all cases, thermal intermixing was found to result in significant blueshifts of the photoluminescence (PL) emission. In addition, narrowing of the linewidth of the inhomogeneously broadened PL peak was observed. Both effects were found to be strongly dependent on the material system and average dot size. InAlAs/AlGaAs quantum dots exhibited the greatest linewidth reduction after intermixing, indicating this to be a promising method of achieving narrower luminescence lines for devices such as red-emitting zero-dimensional lasers.",

author = "C. Lobo and R. Leon and S. Fafard and Piva, {P. G.}",

year = "1998",

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T1 - Intermixing induced changes in the radiative emission from III-V quantum dots

AU - Lobo, C.

AU - Leon, R.

AU - Fafard, S.

AU - Piva, P. G.

PY - 1998

Y1 - 1998

N2 - We have examined the effect of thermally induced interdiffusion on the luminescence emission from red and infrared emitting self-assembled III-V quantum dots. Three different combinations of dot/barrier materials have been investigated: InAlAs/AlGaAs, InGaAs/AlGaAs and InGaAs/GaAs. In all cases, thermal intermixing was found to result in significant blueshifts of the photoluminescence (PL) emission. In addition, narrowing of the linewidth of the inhomogeneously broadened PL peak was observed. Both effects were found to be strongly dependent on the material system and average dot size. InAlAs/AlGaAs quantum dots exhibited the greatest linewidth reduction after intermixing, indicating this to be a promising method of achieving narrower luminescence lines for devices such as red-emitting zero-dimensional lasers.

AB - We have examined the effect of thermally induced interdiffusion on the luminescence emission from red and infrared emitting self-assembled III-V quantum dots. Three different combinations of dot/barrier materials have been investigated: InAlAs/AlGaAs, InGaAs/AlGaAs and InGaAs/GaAs. In all cases, thermal intermixing was found to result in significant blueshifts of the photoluminescence (PL) emission. In addition, narrowing of the linewidth of the inhomogeneously broadened PL peak was observed. Both effects were found to be strongly dependent on the material system and average dot size. InAlAs/AlGaAs quantum dots exhibited the greatest linewidth reduction after intermixing, indicating this to be a promising method of achieving narrower luminescence lines for devices such as red-emitting zero-dimensional lasers.

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U2 - 10.1063/1.121478

DO - 10.1063/1.121478

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VL - 72

SP - 2850

EP - 2852

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 22

ER -

Intermixing induced changes in the radiative emission from III-V quantum dots

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