Color tunable green–yellow–orange–red Er3+/Eu3+-codoped PbGeO3:PbF2:CdF2 glass phosphor for application in white-LED technology

Dy3+/Tb3+-codoped tunable warm light-emitting fluorogermanate glass phosphor

“…6 indicate that indeed the phosphors herein reported produced fluorescence in the low-color correlated temperature and are a viable additional alternative to that reported elsewhere. [38][39][40] Although the host material utilized in the measurements herein reported contains hazardous elements (Pb, Cd), the lead and cadmium ions are immobilized within the glassy matrix, and further solubility studies in solution with characteristics of the body fluid could confirm this assumption. The use of PbF 2 and of CdF 2 is related to the possibility of the formation of nanocrystals of these fluorides containing rare-earth ions.…”

Improved photoluminescence properties of BaAl 2 Si 2 O 8 :Eu 3+ ,Tb 3+ phosphors by doping Tb 3+

“…Light emitting diodes (LEDs)-based lighting system is regarded as the next generation solidstate illumination technology due to its energy saving, low power consumption, high electrical energy to light conversion efficiency, long lifetime, low cost, easy maintenance, and environmentally friendly quality [1][2][3][4]. Nowadays, the commercial white LEDs are fabricated using GaN blue LED chips and yellow Y 3 Al 5 O 12 :Ce 3+ (YAG) phosphor due to the low cost, easy fabrication process, and high brightness [1].…”

“…Nowadays, the commercial white LEDs are fabricated using GaN blue LED chips and yellow Y 3 Al 5 O 12 :Ce 3+ (YAG) phosphor due to the low cost, easy fabrication process, and high brightness [1]. However, this type of white LED has a low color rendering index and high color temperature because of the deficiency of red components in its spectra [2].…”

Three- and two-photon upconversion luminescence switching in Tm3+/Yb3+-codoped sodium niobate nanophosphor

“…Multiphoton upconversion (UC) has attracted much attention because of its potential applications for frequency conversion, multicolor display, optical networking systems, infrared sensors, [1][2][3][4][5][6] and more recently with focus to study biological systems. 7,8 The attractive features of near-infrared (NIR)-to-visible UC fluorescent bioprobes include an improved signal-tonoise ratio due to the absence of autofluorescence and reduction of light scattering within the water window of the biological tissues and biolables.…”