Optical Materials: X (May 2024)

Effect of Yb doping on the optical and photoelectric properties of CsPbCl3 single crystals

  • T.M. Demkiv,
  • YaM. Chornodolskyy,
  • T.M. Muzyka,
  • S.Z. Malynych,
  • R. Ya Serkiz,
  • A.S. Pushak,
  • A. Kotlov,
  • R.V. Gamernyk

Journal volume & issue
Vol. 22
p. 100303

Abstract

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In this paper, the effect of Yb dopant on the optical and photoelectric properties of CsPbCl3:Yb single crystals is studied. The position of the main energy level of Yb3+ ions relative to the energy band was determined. Two channels of electron photoionization into the conduction band were identified, which are photo-stimulated transition of valence electrons and transition of electrons from the ground level of the Yb3+ dopant ion. The crucial role of Yb2+ ions in the manifestation of the quantum cutting effect was shown. A non-uniform distribution of ytterbium dopant in the CsPbCl3:Yb single crystal volume was revealed. It was established that the absolute quantum yield of ytterbium luminescence in CsPbCl3:Yb single crystals in the near-infrared region at Yb concentration of 2 mol.% reaches 86%.

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