Photophysical properties of Eu3+ and Tb3+-doped ZnAl2O4 phosphors obtained by combustion reaction

Luminescent properties and X-ray photoelectron spectroscopy study of ZnAl2O4:Ce3+,Tb3+ phosphor

“…For example, from the list of selected excitation wavelengths (230-325 nm), the most intense excitation was observed at 230 nm and it gave green emission ( em = 544 nm) in all the samples. The excitation at 230 nm is consistent with the 232 nm excitation attributed to the 4f 8 → 4f 8 5d 1 transitions of Tb 3+ by Barros et al [11]. Fig.…”

“…For application in display technologies, ZnAl 2 O 4 is used as host matrix for trivalent rare-earth ions (e.g. Tb 3+ , Eu 3+ and Dy 3+ ) [11][12][13] or transition metals (e.g. Mn 2+ and Cr 3+ ) [14,15] to prepare phosphors emitting mostly in the visible range of the electromagnetic spectrum.…”

“…Mn 2+ and Cr 3+ ) [14,15] to prepare phosphors emitting mostly in the visible range of the electromagnetic spectrum. Researchers in this study are particularly interested in the performance of a nanocrystalline ZnAl 2 O 4 because of the speculation that nanocrystalline materials may have better optical properties than their bulk counterparts [11]. Different synthesis methods such as sol-gel [16,17], hydrothermal [18,19], combustion [6,15,20] and solid state reaction [21] are commonly used to prepare rare-earth/transition metal doped nanocrystalline ZnAl 2 O 4 phosphors.…”

Hydrothermal preparation and photoluminescent properties of MgAl2O4: Eu3+ spinel nanocrystals

“…The Eu 3 + doped nanomaterials were used to provide optical materials for red colour emission [1,2,19]. It is well known that Eu 3 + ions can be also used as a sensitive structural probe to detect the lattice symmetry of host materials [20].…”

“…Nanomaterials activated by lanthanide ions were extensively investigated in last years due to their attractive properties. Potential applications of these materials were found in highperformance displays and devices like plasma display devices (PDP), field emission displays (FED), cathode ray tubes (CRT) and electroluminescent displays (EL) [1][2][3][4].…”