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 - AlGaAs/GaAs/AlGaAs quantum wells as a sensitive tool for the MOVPE reactor environment
AU - Dimastrodonato, V.
AU - Mereni, L. O.
AU - Young, R. J.
AU - Pelucchi, E.
PY - 2010/10/15
Y1 - 2010/10/15
N2 - We present in this work a simple quantum well (QW) structure consisting of GaAs wells with AlGaAs barriers as a probe for measuring the performance of arsine purifiers within a metalorganic vapour phase epitaxy system. Comparisons between two different commercially available purifiers are based on the analysis of low-temperature photoluminescence emission spectra from thick QWs, grown on GaAs substrates misoriented slightly from (1 0 0). Neutral excitons emitted from these structures show extremely narrow linewidths, comparable with those that can be obtained by molecular beam epitaxy in an ultra-high vacuum environment, suggesting that purifications well below the 1 ppb level are needed to achieve high quality quantum well growth. (C) 2010 Elsevier B.V. All rights reserved.
AB - We present in this work a simple quantum well (QW) structure consisting of GaAs wells with AlGaAs barriers as a probe for measuring the performance of arsine purifiers within a metalorganic vapour phase epitaxy system. Comparisons between two different commercially available purifiers are based on the analysis of low-temperature photoluminescence emission spectra from thick QWs, grown on GaAs substrates misoriented slightly from (1 0 0). Neutral excitons emitted from these structures show extremely narrow linewidths, comparable with those that can be obtained by molecular beam epitaxy in an ultra-high vacuum environment, suggesting that purifications well below the 1 ppb level are needed to achieve high quality quantum well growth. (C) 2010 Elsevier B.V. All rights reserved.
U2 - 10.1016/j.jcrysgro.2010.07.021
DO - 10.1016/j.jcrysgro.2010.07.021
M3 - Journal article
VL - 312
SP - 3057
EP - 3062
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
IS - 21
ER -