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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effects of nitrogen incorporation and thermal annealing on the optical and spin properties of GaPN dilute nitride alloys

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Author(s):
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Balanta, M. A. G. [1, 2] ; de Oliveira, P. B. A. [1] ; Albalawi, H. [3, 4] ; Galvao Gobato, Y. [1, 5] ; Galeti, H. V. A. [6] ; Rodrigues, A. D. [1] ; Henini, M. [3] ; Almosni, S. [7] ; Robert, C. [8] ; Balocchi, A. [8] ; Leger, Y. [7] ; Carrere, H. [8] ; Bahri, M. [9] ; Patriarche, G. [9] ; Marie, X. [8] ; Cornet, C. [7]
Total Authors: 16
Affiliation:
[1] Univ Fed Sao Carlos, Phys Dept, BR-13560905 Sao Carlos, SP - Brazil
[2] Univ Fed Uberlandia, ICENP, BR-38304402 Ituiutaba, MG - Brazil
[3] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD - England
[4] Princess Nourah Bint Abdulrahman Univ, Fac Sci, Phys Dept, Riyadh - Saudi Arabia
[5] Radboud Univ Nijmegen, EMFL, HFML, Toernooiveld 7, NL-6525 ED Nijmegen - Netherlands
[6] Univ Fed Sao Carlos, Elect Engn Dept, BR-13560905 Sao Carlos, SP - Brazil
[7] Univ Rennes, INSA Rennes, CNRS, UMR 6082, Inst FOTON, F-35000 Rennes - France
[8] Univ Toulouse, INSA, CNRS, UPS, LPCNO, 135 Ave Rangueil, F-31077 Toulouse - France
[9] Univ Paris Saclay, Univ Paris Sud, CNRS, C2N, 10 Blvd Thomas Gobert, F-91120 Palaiseau - France
Total Affiliations: 9
Document type: Journal article
Source: Journal of Alloys and Compounds; v. 814, JAN 25 2020.
Web of Science Citations: 1
Abstract

Here, we report on the structural, optical and magneto-optical properties of as-grown and thermal annealed GaPN thin films containing different N concentrations grown by Solid-Source Molecular Beam Epitaxy on GaP substrates. A wide range of characterization techniques were used to investigate the effect of N incorporation and thermal annealing effect of GaPN/GaP epilayers for a N content between 0.5% and 3%. Our results have shown that as we increase the N content the PL peak energy presents a red shift which is explained by a band gap reduction. However, important effects of exciton localization on optical properties were also evidenced from cw and time resolved PL (PLRT) and magneto-PL. Our results have demonstrated that as the concentration of N is increased, exciton localization effect is enhanced. A substantial improvement of the optical quality and spin properties of the epilayers has been observed after thermal annealing which are significantly more important for samples with higher nitrogen contents. (C) 2019 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 14/50513-7 - Tailoring the transport and optical properties if III-Bi-V nanostructures for advanced photonic devices
Grantee:Helder Vinícius Avanço Galeti
Support Opportunities: Regular Research Grants
FAPESP's process: 16/10668-7 - Optical and Transport Properties of two-dimensional semicondutors based on transition metal dichalcogenides
Grantee:Yara Galvão Gobato
Support Opportunities: Regular Research Grants