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Cathodoluminescence Properties of Red‐Emitting Sr 1− x Ca x S:Eu Phosphors
Author(s) -
Cho YoungSik,
Huh YoungDuk
Publication year - 2016
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.10781
Subject(s) - phosphor , cathodoluminescence , analytical chemistry (journal) , emission spectrum , mole fraction , luminescence , chemistry , materials science , spectral line , optoelectronics , physics , chromatography , astronomy
Sr 1− x Ca x S :Eu ( x = 0, 0.2, 0.4, 0.6, 0.8, 1) phosphors were prepared from CaS , SrS , and EuS via a solid‐state reaction in air. The cathodoluminescence ( CL ) spectra of the Sr 1− x Ca x S :Eu phosphors for the moderate voltage ranging from 4 to 10 kV were obtained to test their usefulness in field emission displays ( FEDs ). The maximum wavelength of the CL spectra of the Sr 1− x Ca x S :Eu phosphors increases from 629 to 668 nm as the mole fraction of calcium increases up to x = 0.8, and then decreases to 663 nm at x = 1. The relationship between the CL spectra and crystal structures of the Sr 1− x Ca x S :Eu phosphors was determined.
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