RT Journal Article
T1 High-quality single-crystalline epitaxial regrowth on pulsed laser melting of Ti implanted GaAs
A1 Algaidy, Sari
A1 Caudevilla Gutiérrez, David
A1 Perez Zenteno, F.
A1 García Hernansanz, Rodrigo
A1 García Hemme, Eric
A1 Olea Ariza, Javier
A1 San Andrés Serrano, Enrique
A1 Duarte Cano, S.
A1 Siegel, J.
A1 Gonzalo, J.
A1 Pastor Pastor, David
A1 Prado Millán, Álvaro del
AB We present a detailed investigation on the formation of supersaturated GaAs using Ti+ implantation followed by nanosecond Pulsed Laser Melting (PLM). We have synthesized high-crystal quality supersaturated GaAs layers with concentrations of Ti above the insulator to metal transition (Mott limit). The Ti-implanted concentration depth profiles after PLM obtained by Time-of-Flight Secondary Ion Mass Spectroscopy (ToF-SIMS) show a redistribution of Ti impurities within the first hundred nanometers and superficial concentration up to 1 × 1021 redistrcm-3. Raman spectroscopy of these Ti supersaturated, and regrown GaAs samples shows a sharp crystalline peak and tensile strain due to the Ti lattice incorporation. Scanning Transmission Electron Microscopy (STEM) and high-resolution Transmission Electron Microscopy (TEM) images show a good GaAs crystallinity after the PLM process. Energy-Dispersive X-ray Spectroscopy (EDS) reveals an enhanced Ti signal inside bubble-like structures and an appearance of interface oxide layer with all processed samples.
PB Elsevier Science Ltd
SN 1369-8001
YR 2023
FD 2023-10-31
LK https://hdl.handle.net/20.500.14352/72593
UL https://hdl.handle.net/20.500.14352/72593
LA eng
NO CRUE-CSIC (Acuerdos Transformativos 2022)"Authors would like to acknowledge C.A.I. de Técnicas Físicas of the Universidad Complutense de Madrid for ion implantation, and the technical. This work was partially supported by the Project MADRIDPV2 (Grant No. P20138/EMT-4308) funded by the Comunidad Autónoma de Madrid with the support of FEDER funds, by the Spanish MINECO (Ministerio de Economía y Competitividad) under grants PID2020-116508RB-100, PID2020-117498RB-I00 and RTI2018-096498-B-I00. One of the authors (S. Algaidy) would also like to acknowledge financial support from Ministry of Education in theKingdom of Saudi Arabia. D.Caudevilla would also like to acknowledge a grant (PRE2018-083798), financed by MICINN and European Social Fund. F. Perez-Zenteno would like to acknowledge financial support Mexico grant program CONACyT under grant 786327. The authors would like to also acknowledge the services of CAI de Espectroscopia of UCM, (INA-LMA) de Universidad de Zaragoza and C.A.C.T.I de Universidad de Vigo for Raman, FIB-SEM and SIMS, respectively."
NO Ministerio de Ciencia e Innovación (MICINN)/FEDER
NO Comunidad de Madrid/ FEDER
NO Ministerio de Economía y Competitividad (MINECO)
NO Ministry of Education of Saudi Arabia
DS Docta Complutense
RD 27 abr 2024