E. Peiner et al., HIGH-QUALITY IN0.53GA0.47AS ON EXACTLY (001)-ORIENTED SI GROWN BY METAL-ORGANIC VAPOR-PHASE EPITAXY, Journal of crystal growth, 172(1-2), 1997, pp. 44-52
In this paper we report on results of an optimized growth process of I
n0.53Ga0.47As on exactly (001)-oriented Si substrates by low-pressure
metal-organic vapour-phase epitaxy (LP-MOVPE). The crystalline perfect
ion of the InGaAs as weft as an intermediate layer sequence consisting
of GaAs, InP and an InGaAs/InP superlattive was examined by transmiss
ion electron microscopy, X-ray diffractometry, and dislocation etching
. Electrical and optical characterization were performed using electro
chemical capacitance-voltage profiling and photoluminescence spectrosc
opy. The InGaAs layer exhibits a lattice mismatch of 1x10(-3) to InP,
an etch-pit density of 1.3x10(8) cm(-2), full widths at half maximum o
f 210 arcsec of the (004) X-ray reflex and of 15 meV of the excitonic
photoluminescence peak at 2 K as well as a background doping concentra
tion of 4x10(16) cm(-3). Using this layer high-performance photodetect
ors for the long-wavelength range were fabricated.