1994
DOI: 10.1063/1.356105
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Growth of aluminum nitride thin films on Si(111) and Si(001): Structural characteristics and development of intrinsic stresses

Abstract: We have grown aluminum nitride thin films by ultrahigh vacuum reactive sputter deposition on Si(111) and Si(001) substrates. We show results of film characterization by Raman scattering, ion beam channeling, and transmission electron microscopy, which establish the occurrence of epitaxial growth of wurtzitic aluminum nitride thin films on Si(111) at temperatures above 600 °C. In contrast, microstructural characterization by transmission electron microscopy shows the formation of highly oriented polycrystalline… Show more

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Cited by 95 publications
(51 citation statements)
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“…It is also known that high partial pressure of N2 reduces the adatom mobility. This explains why the best results were obtained when the growth temperature was higher than 600 °C [55] and using Ar/N2 mixture at relatively low pressures and low N2 content as compared to the depositions at higher process pressures or depositions in pure N2 that resulted in increased surface roughness.…”
Section: ) Alnmentioning
confidence: 76%
“…It is also known that high partial pressure of N2 reduces the adatom mobility. This explains why the best results were obtained when the growth temperature was higher than 600 °C [55] and using Ar/N2 mixture at relatively low pressures and low N2 content as compared to the depositions at higher process pressures or depositions in pure N2 that resulted in increased surface roughness.…”
Section: ) Alnmentioning
confidence: 76%
“…It is also known that a high partial pressure of N2 reduces the ad-atom mobility, which, on the other hand may be increased by a low negative substrate bias voltage. This explains why the best results were obtained when the growth temperature was higher than 600 °C [65] and using an Ar/N2 mixture at relatively low pressures and low N2 content as compared to the depositions at higher process pressures or depositions in pure N2 that resulted in increased surface roughness. The samples discussed in Paper 1-3 were deposited at a floating substrate potential, and in Papers 4-6 a substrate DC bias of -15 to -30 V was applied.…”
Section: Growth Of Binary and Ternary Aln-based Thin Filmsmentioning
confidence: 79%
“…Sin embargo, debido al elevado desajuste reticular entre el GaN y el Si (16.9% en tensión) y a la diferencia en los coeficientes de expansión térmica (α GaN = 5.59/K y α Si = 3.59/K), aparecen dificultades en el crecimiento epitaxial. Por ello, se hace necesaria la utilización de capas amortiguadoras que mejoren la calidad cristalina de la posterior epitaxia de GaN (2) . Por otra parte en el sistema que nos ocupa resulta fundamental el uso de capas amortiguadoras debido a que en el crecimiento de GaN directamente sobre Si se produce la formación de una capa amorfa en la intercara (3,4) , dificultando el crecimiento de epitaxias de nitruros con calidad suficiente para la fabricación posterior de dispositivos.…”
Section: Introductionunclassified