@article{591a69c3944a45a5bbda7e6c117acf2e,
title = " Effect of InAs quantum dots capped with GaAs on atomic-scale ordering in Ga 0.5 In 0.5 P ",
abstract = " The CuPt ordering of the group III elements in Ga x In 1-x P (x ≃ 0.5) has been observed to vary during growth by metalorganic vapor-phase epitaxy of InAs quantum dots capped with GaAs in a GaInP matrix. While ordering is not affected by the insertion of a GaAs layer, the growth of InAs quantum dots capped with GaAs results in ordered, partially ordered, or fully disordered GaInP. We show that the degree of ordering depends on the deposition time of the InAs quantum dots and on the thickness of the GaAs capping layer. Our results indicate that disordered GaInP occurs in the presence of excess indium at the growth surface, which results from the growth of strained InAs quantum dots. Ordering resumes when the excess indium is consumed. Cathodoluminescence, scanning transmission electron microscopy, and atomic force microscopy are used in this study to correlate the electronic properties and the microstructure of the thin films. ",
author = "Su, {P. Y.} and H. Liu and Kawabata, {R. M.S.} and Weiner, {E. C.} and R. Jakomin and Pires, {M. P.} and Richard King and Souza, {P. L.} and Fernando Ponce",
note = "Funding Information: This research was funded by the Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy, under Award No. DE-AR0000470, and by the National Science Foundation (NSF) and the Department of Energy (DOE) under NSF CA No. EEC-1041895. The research at PUC-Rio was partially supported by the Fundac{\~a}o de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), the Financiadora de Estudos e Projetos (FINEP), and the Conselho Nacional de Desenvolvimento Cient{\'i}fico e Tecnol{\'o}gico (CNPq). The authors gratefully acknowledge assistance in the determination of density of QDs by AFM from Dr. C. M. Almeida at INMETRO in Rio de Janeiro Funding Information: This research was funded by the Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy, under Award No. DE-AR0000470, and by the National Science Foundation (NSF) and the Department of Energy (DOE) under NSF CA No. EEC-1041895. The research at PUC-Rio was partially supported by the Fundac{\~a}o de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), the Financiadora de Estudos e Projetos (FINEP), and the Conselho Nacional de Desenvolvimento Cient{\'i}fico e Tecnol{\'o}gico (CNPq). The authors gratefully acknowledge assistance in the determination of density of QDs by AFM from Dr. C. M. Almeida at INMETRO in Rio de Janeiro. Publisher Copyright: {\textcopyright} 2019 Author(s).",
year = "2019",
month = feb,
day = "7",
doi = "10.1063/1.5063941",
language = "English (US)",
volume = "125",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "5",
}