Recent progress in understanding the persistent luminescence in SrAl₂O₄:Eu,Dy

ABSTRACT

Ever since the discovery of SrAl₂O₄:Eu,Dy persistent afterglow material, that can intensively glow up to 20 h, the mechanism of long-lasting luminescence has been a popular area of research. The research is focused on discovering the mechanism of persistent luminescence in order to prolong the duration and intensity of afterglow in a controlled way. Although most researchers agree on the general things, there are still many unclarities and ambiguities to discuss upon. This review paper briefly sketches in the highlights of past research on the luminescence mechanism in SrAl₂O₄:Eu,Dy, mainly focusing on the research conducted in the past decade dedicated to clearing these ambiguities. This paper provides an overview of the latest persistent luminescence mechanisms offered by researchers.

KEYWORDS:

• Persistent luminescence
• long afterglow
• luminescence mechanism
• luminescence mechanism
• strontium aluminate

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Virginija Vitola http://orcid.org/0000-0002-2599-4377

Ivita Bite http://orcid.org/0000-0001-7049-0840

Krisjanis Smits http://orcid.org/0000-0002-1652-9211

Additional information

Funding

This work was conducted with the funding of Scientific Research Project for Students and Young Researchers realised at the Institute of Solid State Physics, University of Latvia [SJZ/2018/2].