Publication detail

The riddle of orange-red luminescence in Bismuth-doped silica glasses

LAGUTA, O. RAZDOBREEV, I.

Original Title

The riddle of orange-red luminescence in Bismuth-doped silica glasses

Type

journal article in Web of Science

Language

English

Original Abstract

For over the past two decades it has been believed that the intense orange-red photoluminescence in Bismuth-doped materials originates from Bi2+ ions. Based on the results from magnetic circular polarization experiments, we demonstrate that this hypothesis fails for Bismuth-doped silica glasses. Our findings contradict the generally accepted statement that the orange-red luminescence arises from P-2(3/2)(1)-> P-2(1/2) transition in a divalent Bismuth ion. The degree of magnetic circular polarization of this luminescence exhibits non-monotonic temperature and field dependencies, as well as sign reversal. This complex behaviour cannot be explained under the assumption of a single Bi2+ ion. The detailed analysis enables us to construct a consistent diagram of energy levels involved in the magneto-optical experiments and propose a new interpretation of the nature of orange-red luminescence in Bismuth-doped silica glass. A centre responsible for this notorious photoluminescence must be an even-electron system with an integer total spin, presumably a dimer of Bismuth ions or a complex consisting of Bi2+ and an oxygen vacancy.

Keywords

Fiber materials; Laser materials; Spectroscopy, fluorescence and luminescence.

Authors

LAGUTA, O.; RAZDOBREEV, I.

Released

8. 4. 2021

Publisher

Nature Portfolio

Location

BERLIN

ISBN

2045-2322

Periodical

Scientific Reports

Year of study

11

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

10

Pages count

10

URL

https://www.nature.com/articles/s41598-021-87290-z

Full text in the Digital Library

http://hdl.handle.net/11012/203219

BibTex

@article{BUT172492,
  author="Oleksii {Laguta} and Igor M. {Razdobreev}",
  title="The riddle of orange-red luminescence in Bismuth-doped silica glasses",
  journal="Scientific Reports",
  year="2021",
  volume="11",
  number="1",
  pages="1--10",
  doi="10.1038/s41598-021-87290-z",
  issn="2045-2322",
  url="https://www.nature.com/articles/s41598-021-87290-z"
}