Luminescent mechanism of Y2SiO5:Ce phosphor powder

E. Coetsee; J. J. Terblans; O. M. Ntwaeaborwa; H. C. Swart

doi:10.1016/j.physb.2009.09.015

Luminescent mechanism of Y₂SiO₅:Ce phosphor powder

E. Coetsee, J. J. Terblans, O. M. Ntwaeaborwa, H. C. Swart

University of The Free State

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

A luminescent mechanism was constructed for the broad band emission spectra of the X₁ phase of the Y₂SiO₅:Ce phosphor powder. Four Gaussian peaks fit to the cathodoluminescent (CL) and photoluminescent (PL) spectra were attributed to the two different sites (A1 and A2) of the Ce³⁺ ion in the host matrix and the difference in orientation of the neighbour ions in the complex crystal structure. Each Ce³⁺ site gives rise to transitions from the 5d to the two (therefore two peaks) 4f energy levels (²F_5/2 and ²F_7/2 due to crystal field splitting). Energy transfer from other defect levels in the matrix was also observed.

Original language	English
Pages (from-to)	4426-4430
Number of pages	5
Journal	Physica B: Condensed Matter
Volume	404
Issue number	22
DOIs	https://doi.org/10.1016/j.physb.2009.09.015
Publication status	Published - 1 Dec 2009
Externally published	Yes

Keywords

CL
PL and Gaussian peak fitting
YSiO:Ce

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2009.09.015

Cite this

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title = "Luminescent mechanism of Y2SiO5:Ce phosphor powder",

abstract = "A luminescent mechanism was constructed for the broad band emission spectra of the X1 phase of the Y2SiO5:Ce phosphor powder. Four Gaussian peaks fit to the cathodoluminescent (CL) and photoluminescent (PL) spectra were attributed to the two different sites (A1 and A2) of the Ce3+ ion in the host matrix and the difference in orientation of the neighbour ions in the complex crystal structure. Each Ce3+ site gives rise to transitions from the 5d to the two (therefore two peaks) 4f energy levels (2F5/2 and 2F7/2 due to crystal field splitting). Energy transfer from other defect levels in the matrix was also observed.",

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AU - Coetsee, E.

AU - Terblans, J. J.

AU - Ntwaeaborwa, O. M.

AU - Swart, H. C.

PY - 2009/12/1

Y1 - 2009/12/1

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AB - A luminescent mechanism was constructed for the broad band emission spectra of the X1 phase of the Y2SiO5:Ce phosphor powder. Four Gaussian peaks fit to the cathodoluminescent (CL) and photoluminescent (PL) spectra were attributed to the two different sites (A1 and A2) of the Ce3+ ion in the host matrix and the difference in orientation of the neighbour ions in the complex crystal structure. Each Ce3+ site gives rise to transitions from the 5d to the two (therefore two peaks) 4f energy levels (2F5/2 and 2F7/2 due to crystal field splitting). Energy transfer from other defect levels in the matrix was also observed.

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