Abstract
AbstractIn this paper, we report the preparation of a red‐emitting NaCaPO4:Eu3+ phosphor by the solid‐state method at 900 °C, also the effects of Eu3+ concentration on its luminescent properties were investigated. To achieve charge compensation, additional Na+ acting as a charge compensator was incorporated into the phosphor. Under near‐ultraviolet (UV) excitation, the luminescent properties as a function of additional Na+ concentration were systematically studied with a fixed optimal Eu3+ concentration. It was found that charge‐compensated phosphors showed greatly enhanced red emission at 619 nm, compared with the phosphor without charge compensation. Na1.3Ca0.4PO4:0.3Eu3+ was deduced to be the best composition and its luminescent intensity was stronger than that of commercial red‐emitting phosphors for white light‐emitting diode application.magnified imageThe emission spectra of as‐prepared NaCa0.7PO4:0.3Eu3+ (a), Na1.3Ca0.4PO4:0.3Eu3+ (b), and commercial Y2O2S:Eu3+ (c) phosphors excited by 395 nm.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
