Abstract
A novel yellow emitting phosphor Na4Hf2Si3O12:Eu2+ (NHSO:Eu2+) has been successfully synthesized through solid-state reaction for the first time. The crystal structure, morphology, and band structure were researched at length. The average diameter of NHSO is 3.06 μm. Under 365 nm excitation, the NHSO:Eu2+ phosphors exhibit a broad yellow emission peaking at 545 nm with FWHM about 126 nm. NHSO:Eu2+ phosphors exhibit an asymmetric emission peak owing to Eu2+ occupying two types of Na+(Na1 and Na2) with different environment. The energy transfer between Eu2+ belongs to dipole-dipole interaction. A WLED lamp with high Ra (87.5) and low CCT (3953 K) was obtained by combing NHSO:Eu2+ with BAM, CaAlSiN3:Eu2+ and n-UV chip (λmax = 380 nm). Under low voltage and current condition, the phosphors also exhibit perfect stability with high current saturation. All these results suggest that NHSO:Eu2+ phosphor would be a potential candidate for n-UV LED and FED applications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.