title: Nd3+, Ho3+-codoped garnet-related Li7La3Hf2O12phosphor with NIR luminescence.
abstract: Simultaneous emission lines around 1.05μm, 1.3μm, 1.8μm, 2.1μm and 2.7μm have been observed in Li7La3-xNdxHf2O12:Ho3+(x=0.00-0.15) under 808nm laser diode excitation. Near-infrared luminescence due to holmium ions with residual concentration in the Li7La3Hf2O12host has been studied. The intensity of 2.1 and 2.7μm lines associated with5I7→5I8and5I6→5I7transitions in Ho3+depends on the neodymium codopant concentration. This result indicates that Nd3+ions can be potentially used as sensitizers for Ho3+ions to stimulate the intense near-infrared emission in this system. Possible energy transfer mechanisms between lanthanide ions have been briefly discussed.
authors.affiliation: Institute of Solid State Chemistry, UB RAS, 91 Pervomaiskaya, 620990 Ekaterinburg, Russia. Electronic address: baklanovay@ihim.uran.ru.
authors.forename: Yana V
authors.initials: YV
authors.lastname: Baklanova
authors.affiliation: Institute of Solid State Chemistry, UB RAS, 91 Pervomaiskaya, 620990 Ekaterinburg, Russia.
authors.forename: Olga A
authors.initials: OA
authors.lastname: Lipina
authors.affiliation: Institute of Solid State Chemistry, UB RAS, 91 Pervomaiskaya, 620990 Ekaterinburg, Russia.
authors.forename: Lidiya G
authors.initials: LG
authors.lastname: Maksimova
authors.affiliation: Institute of Solid State Chemistry, UB RAS, 91 Pervomaiskaya, 620990 Ekaterinburg, Russia.
authors.forename: Alexander P
authors.initials: AP
authors.lastname: Tyutyunnik
authors.affiliation: Institute of Solid State Chemistry, UB RAS, 91 Pervomaiskaya, 620990 Ekaterinburg, Russia.
authors.forename: Ivan I
authors.initials: II
authors.lastname: Leonidov
authors.affiliation: Institute of Solid State Chemistry, UB RAS, 91 Pervomaiskaya, 620990 Ekaterinburg, Russia.
authors.forename: Tatyana A
authors.initials: TA
authors.lastname: Denisova
authors.affiliation: Institute of Solid State Chemistry, UB RAS, 91 Pervomaiskaya, 620990 Ekaterinburg, Russia.
authors.forename: Vladimir G
authors.initials: VG
authors.lastname: Zubkov
keywords: Garnets; Infrared luminescence; Phosphors; X-ray diffraction