Affiliation:
1. Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China
2. College of Chemistry and Biology Engineering Hechi University Yizhou 546300 China
Abstract
AbstractSite‐selective occupation generated by ion doping into crystal lattices is an effective way to explore new matter and regulate luminescent properties. Herein, equiv. M2+ (Ca, Sr, Ba) is partially replaced each other to formulate multiple doped sites in Li2MSiO4: Eu2+ (LMSO: Eu2+). As the luminescence center, Eu2+ selectively occupies different sites to regulate luminescent color in the visible spectrum ranging from blue to orange, and ultimately functionality improvement. The Huang‐Rhys factor is quite small and the resulting phosphors display an ultrahigh thermal stability for optical thermometry. Besides, utilizing synthesized phosphors combined with the InGaN chip generates high‐quality full‐spectrum white light. Under X‐ray irradiation, LMSO: Eu2+ (M = Ca, Sr, Ba) exhibits great X‐ray imaging ability, the detection limit of X‐ray reaches 0.18, 0.075, and 0.12 µGy s−1. This work presents great potentiality of synthesized phosphors in the fields of solid‐state lighting and X‐ray imaging.
Funder
Innovative Research Group Project of the National Natural Science Foundation of China