Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Magneto-photoluminescence study of type-II charge confinement in epitaxially grown GaInP2
AU - Hayne, Manus
AU - Maes, J
AU - Manz, Y M
AU - Schmidt, O G
AU - Moshchalkov, V V
PY - 2004/3
Y1 - 2004/3
N2 - We have studied the photoluminescence from GaInP2 grown by molecular beam epitaxy as a function of laser power, magnetic field and temperature. We show that the single luminescence peak observed in such samples arises from weakly bound (type-II) excitons in which the electrons are localised and the holes are free, and that it is the same as the additional low-energy peak typically observed in strongly CuPt-ordered GaInP2 grown by chemical vapour deposition techniques. We propose that the electron is confined in In-rich regions of the sample and the hole is delocalised by coupling between heavy-and light-hole bands. (C) 2003 Elsevier B.V. All rights reserved.
AB - We have studied the photoluminescence from GaInP2 grown by molecular beam epitaxy as a function of laser power, magnetic field and temperature. We show that the single luminescence peak observed in such samples arises from weakly bound (type-II) excitons in which the electrons are localised and the holes are free, and that it is the same as the additional low-energy peak typically observed in strongly CuPt-ordered GaInP2 grown by chemical vapour deposition techniques. We propose that the electron is confined in In-rich regions of the sample and the hole is delocalised by coupling between heavy-and light-hole bands. (C) 2003 Elsevier B.V. All rights reserved.
KW - CuPt ordering
KW - GalnP(2)
KW - MBE
KW - pulsed magnetic fields
KW - COMPOSITION MODULATION
KW - SEMICONDUCTOR ALLOYS
KW - OPTICAL-PROPERTIES
KW - QUANTUM DOTS
KW - BAND
KW - ANISOTROPY
KW - MASSES
U2 - 10.1016/j.physe.2003.11.029
DO - 10.1016/j.physe.2003.11.029
M3 - Journal article
VL - 21
SP - 257
EP - 260
JO - Physica E: Low-dimensional Systems and Nanostructures
JF - Physica E: Low-dimensional Systems and Nanostructures
SN - 1386-9477
IS - 2-4
ER -