Composition and optical properties of dilute-Sb GaN1−xSbx highly mismatched alloys grown by MBE

Martin Shaw; K.M. Yu; M. Ting; R. E. L. Powell; W. L. Sarney; S. P. Svensson; A. J. Kent; W. Walukiewicz; C. T. Foxon; S. V. Novikov; Robert W. Martin

doi:10.1088/0022-3727/47/46/465102

Composition and optical properties of dilute-Sb GaN1−xSbx highly mismatched alloys grown by MBE

Martin Shaw, K.M. Yu, M. Ting, R. E. L. Powell, W. L. Sarney, S. P. Svensson, A. J. Kent, W. Walukiewicz, C. T. Foxon, S. V. Novikov, Robert W. Martin

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

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Abstract

In this work the compositional and optical characterization of three series of dilute-Sb GaN1 − xSbx alloys grown with various Sb flux, under N and Ga-rich conditions, are presented. Using wavelength dispersive x-ray microanalysis and Rutherford backscattering spectroscopy it is found that the N-rich samples (Ga flux < 2.3 × 10−7 Torr) incorporate a higher magnitude of GaSb than the Ga-rich samples (Ga flux > 2.3 × 10−7 Torr) under the same growth conditions. The optical properties of the Ga-rich samples are measured using room temperature cathodoluminescence (CL), photoluminescence (PL) and absorption measurements. A broad luminescence peak is observed around 2.2 eV. The nature and properties of this peak are considered, as is the suitability of these dilute-Sb alloys for use in solar energy conversion devices.

Original language	English
Article number	465102
Number of pages	7
Journal	Journal of Physics D: Applied Physics
Volume	47
Issue number	46
DOIs	https://doi.org/10.1088/0022-3727/47/46/465102
Publication status	Published - 29 Oct 2014

Keywords

dilute-Sb GaN1 − xSbx alloys
solar energy conversion devices
Highly Mismatched Alloys (HMAs)
semiconductor alloys

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10.1088/0022-3727/47/46/465102

Shaw-etal-JPD2014-composition-and-optical-properties-of-dilute-sbFinal published version, 897 KBLicence: CC BY 4.0

http://iopscience.iop.org/0022-3727

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Amorphous and crystalline GaNAs alloys for solar energy conversion devices
Martin, R.
EPSRC (Engineering and Physical Sciences Research Council)
1/12/10 → 30/09/14
Project: Research

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@article{b8e3075d5cbb4851a556fd8d2f7431d4,

title = "Composition and optical properties of dilute-Sb GaN1−xSbx highly mismatched alloys grown by MBE",

abstract = "In this work the compositional and optical characterization of three series of dilute-Sb GaN1 − xSbx alloys grown with various Sb flux, under N and Ga-rich conditions, are presented. Using wavelength dispersive x-ray microanalysis and Rutherford backscattering spectroscopy it is found that the N-rich samples (Ga flux < 2.3 × 10−7 Torr) incorporate a higher magnitude of GaSb than the Ga-rich samples (Ga flux > 2.3 × 10−7 Torr) under the same growth conditions. The optical properties of the Ga-rich samples are measured using room temperature cathodoluminescence (CL), photoluminescence (PL) and absorption measurements. A broad luminescence peak is observed around 2.2 eV. The nature and properties of this peak are considered, as is the suitability of these dilute-Sb alloys for use in solar energy conversion devices.",

keywords = "dilute-Sb GaN1 − xSbx alloys, solar energy conversion devices, Highly Mismatched Alloys (HMAs), semiconductor alloys",

author = "Martin Shaw and K.M. Yu and M. Ting and Powell, {R. E. L.} and Sarney, {W. L.} and Svensson, {S. P.} and Kent, {A. J.} and W. Walukiewicz and Foxon, {C. T.} and Novikov, {S. V.} and Martin, {Robert W.}",

year = "2014",

month = oct,

day = "29",

doi = "10.1088/0022-3727/47/46/465102",

language = "English",

volume = "47",

journal = "Journal of Physics D: Applied Physics",

issn = "0022-3727",

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Composition and optical properties of dilute-Sb GaN1−xSbx highly mismatched alloys grown by MBE. / Shaw, Martin; Yu, K.M.; Ting, M.; Powell, R. E. L.; Sarney, W. L.; Svensson, S. P.; Kent, A. J.; Walukiewicz, W.; Foxon, C. T.; Novikov, S. V.; Martin, Robert W.

In: Journal of Physics D: Applied Physics, Vol. 47, No. 46, 465102, 29.10.2014.

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

TY - JOUR

T1 - Composition and optical properties of dilute-Sb GaN1−xSbx highly mismatched alloys grown by MBE

AU - Shaw, Martin

AU - Yu, K.M.

AU - Ting, M.

AU - Powell, R. E. L.

AU - Sarney, W. L.

AU - Svensson, S. P.

AU - Kent, A. J.

AU - Walukiewicz, W.

AU - Foxon, C. T.

AU - Novikov, S. V.

AU - Martin, Robert W.

PY - 2014/10/29

Y1 - 2014/10/29

N2 - In this work the compositional and optical characterization of three series of dilute-Sb GaN1 − xSbx alloys grown with various Sb flux, under N and Ga-rich conditions, are presented. Using wavelength dispersive x-ray microanalysis and Rutherford backscattering spectroscopy it is found that the N-rich samples (Ga flux < 2.3 × 10−7 Torr) incorporate a higher magnitude of GaSb than the Ga-rich samples (Ga flux > 2.3 × 10−7 Torr) under the same growth conditions. The optical properties of the Ga-rich samples are measured using room temperature cathodoluminescence (CL), photoluminescence (PL) and absorption measurements. A broad luminescence peak is observed around 2.2 eV. The nature and properties of this peak are considered, as is the suitability of these dilute-Sb alloys for use in solar energy conversion devices.

AB - In this work the compositional and optical characterization of three series of dilute-Sb GaN1 − xSbx alloys grown with various Sb flux, under N and Ga-rich conditions, are presented. Using wavelength dispersive x-ray microanalysis and Rutherford backscattering spectroscopy it is found that the N-rich samples (Ga flux < 2.3 × 10−7 Torr) incorporate a higher magnitude of GaSb than the Ga-rich samples (Ga flux > 2.3 × 10−7 Torr) under the same growth conditions. The optical properties of the Ga-rich samples are measured using room temperature cathodoluminescence (CL), photoluminescence (PL) and absorption measurements. A broad luminescence peak is observed around 2.2 eV. The nature and properties of this peak are considered, as is the suitability of these dilute-Sb alloys for use in solar energy conversion devices.

KW - dilute-Sb GaN1 − xSbx alloys

KW - solar energy conversion devices

KW - Highly Mismatched Alloys (HMAs)

KW - semiconductor alloys

UR - http://iopscience.iop.org/0022-3727

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DO - 10.1088/0022-3727/47/46/465102

M3 - Article

VL - 47

JO - Journal of Physics D: Applied Physics

JF - Journal of Physics D: Applied Physics

SN - 0022-3727

IS - 46

M1 - 465102

ER -

Composition and optical properties of dilute-Sb GaN1−xSbx highly mismatched alloys grown by MBE

Abstract

Keywords

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Amorphous and crystalline GaNAs alloys for solar energy conversion devices

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