Effects of Cr³⁺ concentration on the optical properties of Cs₂NaAlF₆ single crystals

TY - JOUR

T1 - Effects of Cr3+ concentration on the optical properties of Cs2NaAlF6 single crystals

AU - S. Pedro, Sandra

AU - P. Sosman, Lilian

AU - B. Barthem, Ricardo

AU - C.G. Tedesco, Julio

AU - Bordallo, Heloisa N.

PY - 2013/2/1

Y1 - 2013/2/1

N2 - This work is devoted to the study of optical properties of the elpasolite Cs2NaAlF6 with 0.1, 1.0, 3.0, 10.0, 30.0 and 50.0% of Cr3+ ions. The interest in this system lies on the fact that it presents a high quantum yield in the visible and infrared regions and therefore can be considered for laser applications. The photoluminescence and excitation spectra were obtained at 5 and 300 K, while the absorption spectra were measured at 300 K. The spectra at 300 K show broad bands attributed to the Cr3+ ions in two non-equivalent sites, both of them with octahedral coordination, while at 5 K we can observe the vibrational modes of the [CrF6]3- complex. The ensemble of our results lead us to conclude that the material has potential applications as a lasing system.

AB - This work is devoted to the study of optical properties of the elpasolite Cs2NaAlF6 with 0.1, 1.0, 3.0, 10.0, 30.0 and 50.0% of Cr3+ ions. The interest in this system lies on the fact that it presents a high quantum yield in the visible and infrared regions and therefore can be considered for laser applications. The photoluminescence and excitation spectra were obtained at 5 and 300 K, while the absorption spectra were measured at 300 K. The spectra at 300 K show broad bands attributed to the Cr3+ ions in two non-equivalent sites, both of them with octahedral coordination, while at 5 K we can observe the vibrational modes of the [CrF6]3- complex. The ensemble of our results lead us to conclude that the material has potential applications as a lasing system.

U2 - 10.1016/j.jlumin.2012.09.005

DO - 10.1016/j.jlumin.2012.09.005

M3 - Journal article

SN - 0022-2313

VL - 134

SP - 100

EP - 106

JO - Journal of Luminescence

JF - Journal of Luminescence

ER -