Influence of GaAs substrate misorientation on the characteristics in undulating compositional step-graded AlGaInAs buffers
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Materials Science: Materials in Electronics"
DOI: 10.1007/s10854-019-00871-7
Abstract: Undulating compositional step-graded AlGaInAs buffers are applied to transit the lattice mismatch of 3.8% between InP cap layer and GaAs substrates with misorientation of 2°, 7° and 15° toward (111)A by metal organic chemical vapor… read more here.
Keywords: undulating compositional; substrate misorientation; compositional step; step graded ... See more keywords
Improved quality of In0.30Ga0.70As layers grown on GaAs substrates using undulating step-graded GaInP buffers
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Crystal Growth"
DOI: 10.1016/j.jcrysgro.2018.05.014
Abstract: Abstract High quality In0.30Ga0.70As layers on GaAs substrates were obtained using compositional undulating step-graded Ga1-xInxP (x = 0.48–0.78) buffers grown by metal-organic chemical vapor deposition. The density of threading dislocation is about 4.0 × 106 cm−2 and the root-mean-square roughness… read more here.
Keywords: 30ga0 70as; quality in0; step; in0 30ga0 ... See more keywords
Structural and optical properties of sulfur passivated epitaxial step-graded GaAs1-ySby materials
Sign Up to like & getrecommendations! Published in 2018 at "AIP Advances"
DOI: 10.1063/1.5028133
Abstract: The impact of bulk and surface defect states on the vibrational and optical properties of step-graded epitaxial GaAs1-ySby (0 ≤ y ≤ 1) materials with and without chemical surface treatment by (NH4)2S was investigated. Tunable… read more here.
Keywords: surface; ysby materials; step graded; defect ... See more keywords
Dislocation bending in GaN/step-graded (Al,Ga)N/AlN buffer layers on Si(111) investigated by STM and STEM
Sign Up to like & getrecommendations! Published in 2018 at "Philosophical Magazine"
DOI: 10.1080/14786435.2018.1516899
Abstract: ABSTRACT The distribution and bending of dislocations in GaN/step-graded (Al,Ga)N/AlN buffer layers grown on Si(111) are investigated by cross-sectional scanning tunnelling microscopy (STM) and scanning transmission electron microscopy (STEM). We observe dislocations with -type Burgers… read more here.
Keywords: buffer layers; aln buffer; microscopy; step graded ... See more keywords
COVID-19 vaccine-related presumed allergic reactions and second dose administration by using a two-step graded protocol.
Sign Up to like & getrecommendations! Published in 2021 at "Allergy and asthma proceedings"
DOI: 10.2500/aap.2021.42.210075
Abstract: Background: Acute allergic reactions to messenger RNA (mRNA) vaccines are rare but may limit public health immunization efforts. Objectives: To characterize suspected allergic reactions to the first dose of coronavirus disease 2019 (COVID-19) mRNA vaccine… read more here.
Keywords: vaccine; two step; step graded; second dose ... See more keywords
Phenomenological description of strain relief in step-graded metamorphic buffer layers based on InxAl1 − xAs ternary solutions
Sign Up to like & getrecommendations! Published in 2017 at "Bulletin of the Russian Academy of Sciences: Physics"
DOI: 10.3103/s106287381711003x
Abstract: Spatial distributions of the residual elastic strains in layers of step-graded metamorphic buffers of two different designs, grown via molecular beam epitaxy on the basis of InxAl1 − xAs ternary solutions, are obtained by means… read more here.
Keywords: graded metamorphic; strain relief; buffer; step graded ... See more keywords
Step-Graded AlGaN vs superlattice: role of strain relief layer in dynamic on-resistance degradation
Sign Up to like & getrecommendations! Published in 2021 at "Applied Physics Express"
DOI: 10.35848/1882-0786/ac3dc0
Abstract: In this work, we study the impacts of different types of strain relief layer (SRL) on dynamic on-resistance (R on) degradation of GaN power devices on Si by back-gate ramping and vertical leakage measurement. Our… read more here.
Keywords: relief layer; resistance degradation; degradation; step graded ... See more keywords