TY - JOUR
T1 - In-situ analysis of optoelectronic properties of twin boundaries in AlGaAs by polarized cathodoluminescence spectroscopy in a TEM
AU - Ohno, Yutaka
N1 - Funding Information:
Ministry of Education, Culture, Sports, Science, and Technology, Japan, Grant-in-Aid for Scientific Research (B), no. 19310072 (2007–2009).
PY - 2010/8
Y1 - 2010/8
N2 - Optoelectronic properties of nanoscale twin boundaries (TBs) in indirect-gap AlGaAs layers were studied by polarized cathodoluminescence spectroscopy in a transmission electron microscope. TBs arranged orderly in a short range, i.e. four or more parallel TBs arranged at regular intervals of nanometre length, emitted an intense monochromatic light polarized parallel to the boundaries. The intensity and the photon energy of the light were examined at different temperatures with different electron fluxes, and the origin of the light was discussed based on a twinning superlattice model. According to the study, it was suggested that the photon energy is tunable by controlling the intervals of TBs, without changing the crystal structure and the composition.
AB - Optoelectronic properties of nanoscale twin boundaries (TBs) in indirect-gap AlGaAs layers were studied by polarized cathodoluminescence spectroscopy in a transmission electron microscope. TBs arranged orderly in a short range, i.e. four or more parallel TBs arranged at regular intervals of nanometre length, emitted an intense monochromatic light polarized parallel to the boundaries. The intensity and the photon energy of the light were examined at different temperatures with different electron fluxes, and the origin of the light was discussed based on a twinning superlattice model. According to the study, it was suggested that the photon energy is tunable by controlling the intervals of TBs, without changing the crystal structure and the composition.
KW - AlGaAs
KW - in-situ analysis
KW - polarized cathodoluminescence spectroscopy in a transmission electron microscope
KW - transmission electron microscopy
KW - twin boundaries
KW - twinning superlattice
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U2 - 10.1093/jmicro/dfq042
DO - 10.1093/jmicro/dfq042
M3 - Article
C2 - 20554757
AN - SCOPUS:77955527333
VL - 59
SP - S141-S147
JO - Microscopy (Oxford, England)
JF - Microscopy (Oxford, England)
SN - 2050-5698
IS - SUPPL. 1
ER -