Emission sensitization and mechanisms of electron-excitation migration in structures based on III-nitrides doped with rare-earth elements (Eu, Er, Sm)

Journal Article · Mon Mar 15 00:00:00 EDT 2010 · Semiconductors

DOI:https://doi.org/10.1134/S1063782610030097· OSTI ID:21562335

Danilovsky, E Yu; Kuzmin, R V ^[1]

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1. Russian Academy of Sciences, Ioffe Physicotechnical Institute (Russian Federation)

The effect of doping with Eu, Er, and Sm rare-earth ions on the shape of the luminescence spectrum for heterostructures with GaN/In{sub x}Ga{sub 1-x}N (0.1 < x < 0.4) quantum wells and from p-GaN<Mg>/n-GaN and p-AlGaN/n-GaN junctions is investigated. The results of measurements of the electroluminescence of these structures correlate with the previous data on photoluminescence and Moessbauer spectroscopy. It is shown that it is the GaN 'yellow' (5000-6000 A) band that plays the important role in the excitation of intracenter states in the structures with several GaN/InGaN quantum wells doped with Eu and Sm. In this case, Eu is most likely the sensitizer for Sm. Additional introduction of 3d metal (Fe{sup 57}) in p-GaN<Mg>/n-GaN:Eu results in the realization of intracenter transitions in Eu{sup 3+}: {sup 5}D{sub 0} {sup {yields} 7}F{sub 1} (6006 A), {sup 5}D{sub 0} {sup {yields} 7}F{sub 2} (6195 A), {sup 5}D{sub 0} {sup {yields} 7}F{sub 3} (6627 A), and {sup 5}D{sub 1} {sup {yields} 7}F{sub 4} (6327 A) due to the occurrence of new, efficient channels of excitation transfer to intracenter states and in the effect of Fe on the local environment of rare-earth ions including due to the f-d hybridization enhancement.

• OSTI ID: 21562335
• Journal Information: Semiconductors, Vol. 44, Issue 3; Other Information: DOI: 10.1134/S1063782610030097; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DOPED MATERIALS
ELECTROLUMINESCENCE
ELECTRONS
EUROPIUM IONS
EXCITATION
GALLIUM NITRIDES
HYBRIDIZATION
IRON 57
MIGRATION
MOESSBAUER EFFECT
PHOTOLUMINESCENCE
QUANTUM WELLS
RARE EARTHS
SENSITIZERS
SPECTRA
CHARGED PARTICLES
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
FERMIONS
GALLIUM COMPOUNDS
INTERMEDIATE MASS NUCLEI
IONS
IRON ISOTOPES
ISOTOPES
LEPTONS
LUMINESCENCE
MATERIALS
METALS
NANOSTRUCTURES
NITRIDES
NITROGEN COMPOUNDS
NUCLEI
PHOTON EMISSION
PNICTIDES
REAGENTS
STABLE ISOTOPES