Zobrazeno 1 - 10
of 89
pro vyhledávání: '"N. Bottka"'
Publikováno v:
Materials Science and Engineering: B. 11:125-129
Cubic silicon carbide (β-SiC) films have been grown epitaxially on silicon-on-sapphire (SOS) substrates by chemical vapor deposition. A fresh layer of silicon is first deposited in situ on the SOS substrate at approximately 1050°C. The silicon laye
Qualification of OMVPE AlGaAs/GaAs HBT structures using nondestructive photoreflectance spectroscopy
Publikováno v:
Journal of Crystal Growth. 107:893-897
High performance heterojunction bipolar transistor (HBT) integrated circuits are extremely dependent upon the uniformity and quality of the III–V compound heteroepitaxial materials used in their fabrication. HBT requirements include the need for ex
Autor:
N. Bottka, Robert Glosser, Walter M. Duncan, R.L. Henry, P.E.R. Nordquist, C. Durbin, D. K. Gaskill, J. P. Estrera
Publikováno v:
Applied Physics Letters. 61:1549-1551
Anomalous splitting has been observed in the photoreflectance (PR) response of SI:GaAs in the vicinity of the exciton at 78 K. Photoluminescence (PL) measurements suggest the splitting is correlated with the EL2 content of the samples. Separation bet
Publikováno v:
Applied Physics Letters. 58:1419-1421
Cubic (β) silicon carbide films have been grown epitaxially on silicon‐on‐sapphire (SOS) substrates by chemical vapor deposition. The β‐SiC films were grown between 1340–1370 °C on SOS substrates which have a layer of silicon deposited in
Publikováno v:
Applied Physics Letters. 56:1269-1271
Photoreflectance‐derived band‐gap parameters as a function of temperature for InGaAs and InAlAs lattice matched to InP are reported. The experiment was performed on a set of samples of various compositions (and strains) yielding greater reliabili
Autor:
R. L. Henry, N. Bottka, C. Durbin, Robert Glosser, J. P. Estrera, Walter M. Duncan, P.E.R. Nordquist, D. K. Gaskill
Publikováno v:
MRS Proceedings. 262
Anomalous splitting has been observed in the photoreflectance (PR) response of SI:GaAs in the vicinity of the exciton at 78 K. Recent photohiminescence (PL) measurements suggest the splitting is correlated with the EL2 content of the samples. Separat
Publikováno v:
SPIE Proceedings.
Photoreflectance (PR) was used to determine the surface damage caused by polishing on semi-insulating lnP:Fe substrates. PR measurements were performed between subsequent etching steps. The PR results on substrates, obtained from various vendors and
Publikováno v:
MRS Proceedings. 216
To date, OMVPE has failed to grow epitaxial InSb at temperatures below about 400 °C. Therefore, we have studied InSb deposition using the novel group V source triisopropylantimony (TIPSb) with trimethylindium (TMIn), comparing this with results in t
Publikováno v:
Journal of Crystal Growth. 77:418-423
Thin films of GaN have been grown on A12O3, Si and GaAs using trimethylgallium and hydrazine (N2H4) in N2 at atmospheric pressure. Growth proceeded by the formation of a room temperature adduct which decomposed to form GaN in the temperature range 42
Publikováno v:
Journal of Applied Physics. 57:432-437
A detailed electroreflectance (ER) and photoluminescence study has been performed of impurity‐related, below‐gap electroabsorption (EA) features in bulk Sn‐ and Si‐doped GaAs as well as in thin epitaxial layers of GaAs and Ga1−xAlxAs/GaAs,