High infrared light yield of Erbium-doped fluoride crystals

Authors :: S. Vasiukov
Giovanni Carugno
A. Di Lieto
M. Tonelli
Caterina Braggio
F. Chiossi
A. F. Borghesani
Source :: Journal of luminescence 219 (2020): 116883. doi:10.1016/j.jlumin.2019.116883, info:cnr-pdr/source/autori:Chiossi F.; Vasiukov S.; Borghesani A.F.; Braggio C.; Di Lieto A.; Tonelli M.; Carugno G./titolo:High infrared light yield of Erbium-doped fluoride crystals/doi:10.1016%2Fj.jlumin.2019.116883/rivista:Journal of luminescence/anno:2020/pagina_da:116883/pagina_a:/intervallo_pagine:116883/volume:219
Publication Year :: 2020
Publisher :: Elsevier BV, 2020.
Abstract: The emission spectrum of Erbium-doped fluoride crystals excited by soft X-rays in the (400–1700) nm wavelength range is investigated between 3.2 K and 300 K. The largest component of the crystals emission is observed in the infrared range, which corresponds to a light yield of several tens of photons/keV. Such a large value is caused by energy transfer processes between the Erbium ions which convert the excitation of a dopant ion at high energies into the emission of multiple infrared photons. The present results show that this mechanism could be exploited to realize scintillators of high light yield.