Excitation and photoluminescence spectra of solid solutions based on lanthanum indate with perovskite structure doped by Pr<sup>3+</sup>, Nd<sup>3+</sup>, Cr <sup>3+</sup> ions
Excitation and photoluminescence spectra of La<sub>0,</sub><sub>997</sub>Pr<sub>0,</sub><sub>003</sub>InO<sub>3</sub>, La<sub>0,</sub><sub>98</sub>Nd<sub>0,</sub><sub>02</sub>InO<sub>3</sub>, La<sub>0,</sub><sub>977</sub>Pr<sub>0,</sub><sub>003</sub>Nd<sub>0,</sub><sub>02</sub>InO<sub>3</sub>, La<sub>0,</sub><sub>977</sub>Pr<sub>0,</sub><sub>003</sub>Nd<sub>0,</sub><sub>02</sub>In<sub>0,</sub><sub>99</sub>Cr<sub>0,</sub><sub>01</sub>O<sub>3</sub>, LaIn<sub>,0</sub><sub>99</sub>Cr<sub>0,</sub><sub>01</sub>O<sub>3</sub> solid solutions have been studied. It has been found that Cr+ ions incorporated into the In<sup>3+</sup>+ sublattice of La<sub>0,</sub><sub>977</sub>Pr<sub>0,</sub><sub>003</sub>Nd<sub>0,</sub><sub>02</sub>In<sub>0,</sub><sub>99</sub>Cr<sub>0,</sub><sub>01</sub>O<sub>3</sub> solid solution can act as Nd<sup>3+</sup> photoluminescence sensitizers under the excitation by visible light (λ = 445 nm).