Issue 67, 2015

Ultra-broadband luminescent from a Bi doped CaO matrix

Abstract

CaO:Bi phosphor powders were successfully synthesized by the sol–gel combustion method. Post heat treatment led to the enrichment of the Ca2+ site with multiple Bi centers. These centers were responsible for the change in the ultra-broadband cathodoluminescence (CL) emission as a function of different electron beam currents/beam voltages. The CaO phase formation and the presence of the enrichment of Bi was confirmed by using the X-ray diffraction and X-ray photoelectron spectroscopy techniques. The thermoluminescence afterglow spectra for the samples annealed at 800 °C and 1200 °C were strongly modified for the CaO and the presence of the multiple Bi centers. Of particular interest was that the ultra-broadband CL may have potential applications in inorganic single-emitting components that produce various colours under different beam currents/beam voltages or in a variety of optical devices if it can be better controlled.

Graphical abstract: Ultra-broadband luminescent from a Bi doped CaO matrix

Article information

Article type
Paper
Submitted
18 May 2015
Accepted
15 Jun 2015
First published
15 Jun 2015

RSC Adv., 2015,5, 54115-54122

Author version available

Ultra-broadband luminescent from a Bi doped CaO matrix

A. Yousif, R. M. Jafer, S. Som, M. M. Duvenhage, E. Coetsee and H. C. Swart, RSC Adv., 2015, 5, 54115 DOI: 10.1039/C5RA09246A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements