Pressure-induced photoluminescence enhancement of CeF 3 :Tb 3+ nanoparticles.

Authors :: Zhao T
Jing X
Zhang X
Li C
Liu R
Liu B
Yang C
Shen L
Li Q
Liu B
Source :: Nanoscale advances [Nanoscale Adv] 2022 Jun 22; Vol. 4 (15), pp. 3226-3232. Date of Electronic Publication: 2022 Jun 22 (Print Publication: 2022).
Publication Year :: 2022
Abstract: Rare earth fluorides have been widely used in recent years in the field of solid-state lighting. However, the relationship between the structure and luminescence properties is still unclear. Herein, the photoluminescence and structural transition of CeF <subscript>3</subscript> :Tb <superscript>3+</superscript> nanoparticles under high pressure were investigated through in situ photoluminescence and X-ray diffraction measurements. Intriguingly, the photoluminescence of CeF <subscript>3</subscript> :Tb <superscript>3+</superscript> nanoparticles displays an enhancement from 18.3 to 33.4 GPa, accompanied by the phase transition from the starting hexagonal phase to the orthorhombic phase. It was found that the distance of luminescent centers increased sharply during the high-pressure phase transition, which weakened the quenching effect and improved transmission efficiency. Our work provides more insight into the optical characteristics and structures of rare earth trifluorides.<br />Competing Interests: There are no conflicts to declare.<br /> (This journal is © The Royal Society of Chemistry.)