| Title | Polarized emission from KCl : Eu2+ single crystals |
| Publication Type | Journal Article |
| Year of Publication | 2000 |
| Authors | Kang, JG, Sohn, Y, Nah, MK, Kim, YD, Ogryzlo, EA |
| Journal | Journal of Physics-Condensed Matter |
| Volume | 12 |
| Pagination | 3485-3495 |
| Date Published | Apr |
| Type of Article | Article |
| ISBN Number | 0953-8984 |
| Keywords | COLOR-CENTERS, EU-2+, EU2+ LUMINESCENCE, EXCITED-STATE ABSORPTION, IONS, KCL, SPECTROSCOPY |
| Abstract | The polarization emission spectrum and the angular dependence of polarization ratio of the blue emission from KCl:Eu2+ were investigated at 78.8 K. The polarized emission at 420 nm consisted of several components. The angular dependence of polarization ratio of each component is proportional to sin(2 alpha) or - cos(2 alpha), when the exciting light is polarized at ct with respect to the z-axis for the [100]-[010] optical arrangement. The relaxed excited states (RESs) of Eu2+ responsible for the 420 nm emission are presented in terms of the adiabatic potential energy surface (APES), taking into account the Jahn-Teller effect (JTE) coupling to the E-g mode and the spinorbit (SO) interaction. The charge-compensating cation vacancy (CCV, V-c(-)) also causes an additive perturbation. |
| URL | <Go to ISI>://000086701000022 |
