Abstract
CaGd2ZnO5:Tb3+ nanophosphors showed the broadened excitation region as compared to Y2O3:Tb3+ and Gd2O3:Tb3+ phosphors, which covered almost the entire UV-B and UV-A regions.
Highlights
Rare-earth (RE) elements doped inorganic phosphors are unique components for solid-state lighting and biomedical applications because of their stable chemical and physical properties.[1,2,3,4,5,6] Among the applications of solid-state lighting, phosphor-converted light-emitting diodes have gained abundant interest and have been recognized as one of the most promising technologies
These phosphor-converted light-emitting diodes (pc-LEDs) require efficient green phosphors that should have the excitation wavelength matching with the emission wavelength of the UV LEDs or the blue LEDs
The CL properties were measured by a Gatan (UK) MonoCL3 system attached with the scanning electron microscope (SEM: Hitachi S-4300 SE)
Summary
Rare-earth (RE) elements doped inorganic phosphors are unique components for solid-state lighting and biomedical applications because of their stable chemical and physical properties.[1,2,3,4,5,6] Among the applications of solid-state lighting, phosphor-converted light-emitting diodes (pc-LEDs) have gained abundant interest and have been recognized as one of the most promising technologies. White LEDs (WLEDs) are produced by combining a GaN-based blue LED chip with conventional yellow (YAG:Ce) phosphors This type of WLED has a poor color rendering index (CRI) caused by the red color de ciency.[4] a high CRI is one of the prerequisites for its application as a backlight for liquid crystal displays. We reported the structural and detailed luminescent properties of CGZO:Tb3+ nanophosphors by a facile sol–gel synthesis. This phosphor showed the broadened excitation region and provided green emissions almost similar to the commercial green phosphor. The stirring was continued for 2 h at room temperature to form a homogeneous solution. The CL properties were measured by a Gatan (UK) MonoCL3 system attached with the scanning electron microscope (SEM: Hitachi S-4300 SE)
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