Detail publikace

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

LAGUTA, O. RAZDOBREEV, I.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

LAGUTA, O.; RAZDOBREEV, I.

Vydáno

8. 4. 2021

Nakladatel

Nature Portfolio

Místo

BERLIN

ISSN

2045-2322

Periodikum

Scientific Reports

Ročník

11

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

10

Strany počet

10

URL

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

Plný text v Digitální knihovně

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"
}