Инд. авторы:	Ogorodnikov I.N., Pustovarov V.A., Goloshumova A.A, Isaenko L.I., Yelisseyev A.P., Pashkov V.M.
Заглавие:	A luminescence spectroscopy study of SrI2:Nd3+ single crystals
Библ. ссылка:	Ogorodnikov I.N., Pustovarov V.A., Goloshumova A.A, Isaenko L.I., Yelisseyev A.P., Pashkov V.M. A luminescence spectroscopy study of SrI2:Nd3+ single crystals // Journal of Luminescence. - 2013. - Vol.143. - P.101-107. - ISSN 0022-2313. - EISSN 1872-7883.
Внешние системы:	DOI: 10.1016/j.jlumin.2013.04.007; SCOPUS: 2-s2.0-84877977714;
Реферат:	eng: The paper presents the results of a study on the luminescence of SrI 2:Nd3+ single crystals grown by the vertical Bridgman method. The photoluminescence (PL) spectra of SrI2:Nd crystals show characteristic lines corresponding to transitions in trivalent Nd3+ ions, the most intense line at ca. 1070 nm is due to the radiative F3/24→I11/24 transitions. Efficient PL excitation in a crystal transparency band occurs due to optical 4f-4f transitions from the ground 4I 9/2 state, or the charge transfer transitions I-→Nd3+. The paper discussed two new PL emission bands at 2.8 and 3.8 eV, associated with the lattice defects formed in SrI 2 crystal at introducing Nd3+ impurity ions; two intense narrow PL excitation bands at 5.52 and 5.31 eV, originating from free and defect-bound excitons, respectively; an efficient channel of exciton energy transfer between the host lattice and defects. We calculated the H(k) functions of distribution of the elementary relaxations over the reaction rate constants and explained on this basis the nonexponential PL decay kinetics in SrI 2:Nd3+ crystal. © 2013 Elsevier B.V.
Ключевые слова:	Neodymium; Spectroscopy; Single crystals; Rate constants; Ions; Excitons; Excited states; Energy transfer; Distribution functions; Defects; Crystal impurities; Crystal growth from melt; Charge transfer; Vertical Bridgman method; Time-resolved luminescence spectroscopy; Strontium iodides; Photoluminescence spectrum; Luminescence spectroscopy; Exciton energies; Decay kinetics; Charge transfer transitions; Trivalent Nd3+ ion; Time-resolved luminescence spectroscopy; Strontium iodide SrI2; PL decay kinetics; Exciton energy transfer;
Издано:	2013
Физ. характеристика:	с.101-107