G. Pozina et al., Time-resolved optical properties of GaN grown by metalorganic vapor phase epitaxy with indium surfactant, MAT SCI E B, 82(1-3), 2001, pp. 137-139
The effects of isoelectronic indium doping on optical properties of GaN lay
ers grown by metalorganic vapor-phase epitaxy have been studied. Two sets o
f samples have been grown with hydrogen and with nitrogen as carrier gas. I
t has been shown from scanning electron microscopy, cathodoluminescence and
time-resolved photoluminescence that In-doped samples have a lower disloca
tion density, a narrower photoluminescence line width and a longer free exc
iton lifetime. The improvements of structural and optical properties are at
tributed to the effect of In on dislocations. (C) 2001 Elsevier Science B.V
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