IR photoluminescence of Bi+ impurity centers in the RbY2Cl7 ternary chloride

Abstract

Single-crystal samples of RbY₂Cl₇ ternary chloride containing an Bi⁺ isomorphic impurity are prepared for the first time. The optical absorption spectra in the visible region and photoluminescence spectra in the near-IR associated with the presence of Bi⁺ impurity center are studied. The kinetics of the photoluminescence decay is investigated. The influence of the symmetry of the crystal field on the arrangement of the energy levels and on the characteristics of the absorption and photoluminescence spectra of Bi⁺ is demonstrated.