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19 papers · 1 filter
Enhancing solar cell efficiency of AlxIn1-xN/Si heterojunctions using an a-Si buffer: A study of material, interface and device properties
M. Sun, R. G. Cornejo, M. de la Mata +4
This study explores the impact of an optimized amorphous silicon (a-Si) buffer layer on AlxIn1-xN-on-Si(100) heterojunction solar cells, with Al content varying from 0% (InN) to 55…
Structural and optical changes induced by incorporation of antimony into InAs/GaAs(001) quantum dots
A. G. Taboada, A. M. Sánchez, A. M. Beltrán +12
We present experimental evidence of Sb incorporation inside InAs/GaA(001) quantum dots exposed to an antimony flux immediately before capping with GaAs. The Sb composition profile…
Methanation of carbon dioxide over ceria-praseodymia promoted Ni-alumina catalysts. Influence of metal loading, promoter composition and alumina modifier
Ali Lechkar, Adrian Barroso-Bogeat, Ginesa Blanco +2
Two series of ceria-praseodymia promoted Ni-alumina catalysts were prepared from two different commercial modified alumina supports by the incipient wetness impregnation method in…
Formation mechanisms of single-crystalline InN quantum dots fabricated via droplet epitaxy
P. Aseev, Ž. Gačević, J. M. Mánuel +4
This work presents an experimental and theoretical insight into formation mechanisms of single crystalline wurtzite InN quantum dots (QDs) fabricated via metal droplet epitaxy (DE)…
Growth interruption strategies for interface optimization in GaAsSb/GaAsN type-II superlattices
V. Braza, T. Ben, S. Flores +7
Recently, GaAsSb/GaAsN type II short-period superlattices (SLs) have been proposed as suitable structures to be implemented in the optimal design of monolithic multi-junction solar…
Honeycomb monolithic design to enhance the performance of Ni-based catalysts for dry reforming of methane
Fazia Agueniou, Hilario Vidal, M. Pilar Yeste +5
Supported Ni catalysts (4,5% wt%) using a Ce-Zr oxide (18/82 molar ratio and a ceria rich surface) depicting advanced redox properties, were deposited by washcoating over cordierit…