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Growth and characterization of pure and Pr3+-doped Cs4PbBr6 crystals

Abstract : Centimeter-sized single crystals of pure and Pr3+-doped Cs4PbBr6 were successfully grown using a high-temperature solution (HTS)-based vertical Bridgman–Stockbarger method in silica ampoules sealed under Ar gas. The resulting single crystals are bright orange transparent, non-hygroscopic, with a low phonon energy and a wide transparency in the middle infrared (MIR) region. We present the growth conditions together with a characterization of the single crystals by means of calorimetry measurements, room temperature single crystal and powder X-ray diffraction (XRD), Raman, visible and Fourier-transform infrared (FT-IR) spectroscopies. Cs4PbBr6 crystallizes at room temperature in the trigonal space group R-3c, with a = b = 13.7219(2)A˚, c = 17.3153(3)A˚, α = β = 90°, γ = 120° and Z = 6. Pr3+ ions can be dissolved into Cs4PbBr6 crystals, resulting in broad MIR absorption bands.
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https://hal-cea.archives-ouvertes.fr/cea-00348678
Contributor : Chantal Brassy <>
Submitted on : Friday, December 19, 2008 - 7:21:28 PM
Last modification on : Thursday, February 7, 2019 - 5:50:46 PM

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  • HAL Id : cea-00348678, version 1

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Matias Velázquez, Alban Ferrier, Stanislav Péchev, Pierre Gravereau, Jean-Pierre Chaminade, et al.. Growth and characterization of pure and Pr3+-doped Cs4PbBr6 crystals. Journal of Crystal Growth, Elsevier, 2008, 310, pp.5458-5463. ⟨cea-00348678⟩

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