Fabrication, structural properties, and tunable light emission of Sm3+, Tb3+ co-doped SrSnO3 perovskite nanoparticles

C. G. Pérez-Hernández, R. Sánchez-Zeferino*, U. Salazar-Kuri, M. E. Álvarez-Ramos

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Sm3+, Tb3+ co-doped SrSnO3 perovskites were successfully prepared by the sonochemical method and solid-state reactions. X-ray diffraction showed well-defined peak characteristics of the SrSnO3 orthorhombic phase, while SEM analysis revealed the formation of rod-like structures composed of particles with a mean size of 100 nm. Under the excitation of 325 nm, the photoluminescence spectra exhibited a broad emission band (380–500 nm) related to intrinsic defects and peaks attributed to characteristic electronic transitions of Tb3+ (5D47F6, 489 nm, 5D47F5, 542 nm) and Sm3+ (4G5/26H5/2, 570 nm, 4G5/26H7/2, 605 nm) ions. Through co-doping with these rare earths, the emission from perovskite can be tuned. The obtained chromaticity coordinates are (0.33, 0.31) and (0.34, 0.32) for 4Sm2Tb and 4Sm4Tb perovskites, respectively. It indicates the promising application potential of Sm3+, Tb3+ co-doped SrSnO3 as single-phase perovskite for UV excited white light-diodes.

Original languageEnglish
Article number111324
JournalChemical Physics
Volume551
DOIs
StatePublished - Nov 2021

Bibliographical note

Funding Information:
C. G. Perez wishes to thank CONACYT-Mexico for the scholarship granted during his graduate studies and he also wants to thank Dr. Roberto C. Carrillo Torres for its valuable help in the characterization of samples by SEM and optical measurements. The authors acknowledge the CONACYT for financial support at the projects no. INFR-226208–2014 and INFR-255791-2015.

Publisher Copyright:
© 2021 Elsevier B.V.

Keywords

  • Defects
  • Perovskites
  • Photoluminescence
  • White emission

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