Abstract
Abstract A series of Sr9Ga(PO4)7: xDy3+ (x = 0.00 ~ 0.18) phosphors were successfully synthesized via high-temperature solid-phase synthesis. The excitation and emission spectra of Sr9Ga(PO4)7: xDy3+ phosphor due to energy transfer from the Ga–O group to Dy3+ can be detected by excitation at 259 and 482 nm. It is possible to adjust the luminous color from the blue light region to white light region through single-doping Dy3+ in Sr9Ga(PO4)7 matrix, which is applicable for W-LEDs. Based on the temperature-dependent luminescence properties, Sr9Ga(PO4)7: Dy3+ phosphors has excellent thermal stability with absolute sensitivity (Sa) and relative sensitivity (Sr) at 598K of 0.018 K−1 and 0.87%K−1, respectively by the fluorescence intensity ratio (FIR) technology. Therefore, the color tunable phosphor can be used as a thermal sensor in high-temperature environments.
Sign-in/Register to access full text options 
Free) 
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 call
