Converting SrI 2 :Eu 2+ into a near infr

Title

Converting SrI 2 :Eu 2+ into a near infrared scintillator by Sm 2+ co-doping

 Author

Awater, R.H.P. (Student TU Delft)
Alekhin, M. (Student TU Delft)
Biner, D. A. (University of Bern)
Krämer, K.M.B. (University of Bern)
Dorenbos, P. (TU Delft RST/Fundamental Aspects of Materials and Energy; TU Delft RST/Luminescence Materials) ORCID 0000-0002-1004-8353

 Date

2019

 Abstract

The luminescence and scintillation properties of SrI 2 single crystals doped with 5% Eu 2+ and 0.05%, 0.2% and 0.5% Sm 2+ are evaluated. X-ray excited and photoluminescence measurements show energy transfer from excited Eu 2+ ions to Sm 2+ ions. At a concentration of 0.5% Sm 2+ , the luminescence consists almost entirely of 740 nm emission from Sm 2+ 5d-4f transitions. Co-doping SrI 2 :5% Eu 2+ with Sm 2+ provides a novel method to bypass the self-absorption problem encountered in large SrI 2 :Eu 2+ crystals and, at the same time, provides a unique near-infrared emitting scintillator with a light yield of approximately 40,000 photons/MeV.


To reference this document use:

http://resolver.tudelft.nl/uuid:4539fd9c-efe6-4326-af15-f590129fea0b

 DOI

https://doi.org/10.1016/j.jlumin.2019.04.002

 Embargo date

2021-04-12

 ISSN

0022-2313

 Source

Journal of Luminescence, 212, 1-4

 Bibliographical note

Accepted Author Manuscript

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2019 R.H.P. Awater, M. Alekhin, D. A. Biner, K.M.B. Krämer, P. Dorenbos
Files
PDF accepted_manuscript_versi ... rights.pdf 1017.08 KB
Close viewer