Abstract
GdPO4:Er3+/Yb3+ phosphors were synthesized by a hydrothermal method with the assistant of PVP. The obtained samples were characterized by XRD, FTIR, SEM, EDS and spectrophotometer. The XRD and FTIR results indicated the formation of pure hexagonal phase for GdPO4:Er3+/Yb3+ phosphors. The SEM image showed that GdPO4:Er3+/Yb3+ phosphors have the rod-like morphology. The EDS results demonstrated that Er3+ and Yb3+ ions have been inserted into the GdPO4 host. Under the 980nm diode laser excitation, GdPO4:Er3+/Yb3+ phosphors emitted green emissions originating from the 2H11/2, 4S3/2→4I15/2 transitions of Er3+ ions. It was also found that the emission intensities of green emissions were sensitive to Yb3+ concentrations. On the basis of luminescent properties of GdPO4:Er3+/Yb3+ phosphors, we speculated the possible upconversion mechanism. The emission intensity of Er3+ ions increases with the increase of temperature, which is induced by the decreases of water molecules and the populated 2H11/2 level from the 4S3/2 level by thermal agitation.
Sign-in/Register to access full text options 
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.
