Final published version
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 - Rapid thermal annealing and photoluminescence of type-II GaSb single monolayer quantum dot stacks
AU - Mahajumi, Abu Syed
AU - Carrington, Peter
AU - Kostakis, Ioannis
AU - Missous, Mohammed
AU - Sanchez, Ana
AU - Zhuang, Qiandong
AU - Young, Robert
AU - Hayne, Manus
AU - Krier, Anthony
PY - 2013/7/31
Y1 - 2013/7/31
N2 - The effects of rapid thermal annealing on the photoluminescence emission obtained from ten-layer stacks of GaSb/GaAs type-II single monolayer quantum dots and Stranski-Krastanow grown quantum rings have been studied and interpreted. Post-growth rapid thermal annealing was performed with proximity capping at temperatures from 550 degrees C to 800 degrees C, resulting in an increase in photoluminescence emission intensity and a blue shift in peak energy in both types of stacks, together with changes in the activation energy for thermal quenching. This behaviour originates from Sb-As intermixing and changes in morphology of the nanostructures formed using the two different growth mechanisms.
AB - The effects of rapid thermal annealing on the photoluminescence emission obtained from ten-layer stacks of GaSb/GaAs type-II single monolayer quantum dots and Stranski-Krastanow grown quantum rings have been studied and interpreted. Post-growth rapid thermal annealing was performed with proximity capping at temperatures from 550 degrees C to 800 degrees C, resulting in an increase in photoluminescence emission intensity and a blue shift in peak energy in both types of stacks, together with changes in the activation energy for thermal quenching. This behaviour originates from Sb-As intermixing and changes in morphology of the nanostructures formed using the two different growth mechanisms.
KW - MOLECULAR-BEAM EPITAXY
KW - LOCALIZATION
U2 - 10.1088/0022-3727/46/30/305104
DO - 10.1088/0022-3727/46/30/305104
M3 - Journal article
VL - 46
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
SN - 0022-3727
IS - 30
M1 - 305104
ER -