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arXiv · 2409.10818

Growth and Spectroscopic Properties of Pr$^{3+}$ Doped Lu$_2$S$_3$ SingleCrystals

Vojtech Vanecek·Vitezslav Jary·Robert Kral·Lubomir Havlak·Ales Vlk·Romana Kucerkova·Petr Prusa·Jan Barta·Martin Nikl
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Abstract

For the first time Lu$_2$S$_3$ (undoped and Pr-doped) single crystals were successfully grown from melt using micro-pulling-down (mPD) technique. Customization of halide mPD apparatus allowed us to grow rod-shaped (\O 2 mm and length around 20 mm) crystals of Lu$_2$S$_3$ with high melting temperature (~1750 $^\circ$C). X-ray powder diffraction revealed that the grown crystals exhibit the {\epsilon}-Lu$_2$S$_3$ crystal structure ($\alpha$-Al$_2$O$_3$ type, space group R-3c). Optical and scintillation properties of both the undoped and Pr$^{3+}$ doped Lu$_2$S$_3$ were investigated. Fast 5d-4f Pr$^{3+}$ luminescence was observed in both photoluminescence and radioluminescence spectra. The presented technology is an effective tool for the exploration of a large family of high-melting sulfides. Such materials show promise for application as scintillators, active laser media, and optoelectronic components.

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Vojtech Vanecek, Vitezslav Jary, Robert Kral, Lubomir Havlak, Ales Vlk, Romana Kucerkova, Petr Prusa, Jan Barta, Martin Nikl. 2024-09-17. Growth and Spectroscopic Properties of Pr$^{3+}$ Doped Lu$_2$S$_3$ SingleCrystals. https://doi.org/10.1021/acs.cgd.4c00330

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