Can I read Ultra-Broadband Near-Infrared Phosphors Realized by the Heterovalent Substitution Strategy on EtoBox?

Ultra-Broadband Near-Infrared Phosphors Realized by the Heterovalent Substitution Strategy by Ye Yang; Zuizhi Lu; Hua Fan; Mianhong Chen; Linawa Shen; Xinguo Zhang; Qi Pang; Jianhua Chen; Peican Chen; Liya Zhou is a Chemistry article available to read on EtoBox.

What is Ultra-Broadband Near-Infrared Phosphors Realized by the Heterovalent Substitution Strategy about?

Near-infrared (NIR) phosphor-converted light-emitting diodes with broadband emission have received considerable interest. However, there remains a challenge in the construction of ultra-broadband NIR phosphors, hindering their further application. In this work, a heterovalent substitution strategy is proposed to construct a novel ultra-broadband NIR-emitting LaTiTaO 6 :Cr 3+ phosphor with a full width at half maximum of ∼300 nm. Crystal structure, time-resolved emission spectroscopy, and electron paramagnetic resonance analyses confirm that only one crystallographic site of Cr 3+ with separated ions exists. Electron and phonon coupling (EPC) evaluated by the Huang-Rhys factor (S) reveals that the heterovalent substitution strategy contributes to strong EPC with S = 9.185, resulting in ultra-broadband emission. Interestingly, a remarkable blue shift of emission from 1050 to 922 nm with increasing temperature is observed. Moreover, the application of LaTiTaO 6 :Cr 3+ phosphor is demonstrated in the qualitative analysis of ethanol/water mixtures. The work will enrich the toolbox for designing broadband NIRemitting materials.

Who reads Ultra-Broadband Near-Infrared Phosphors Realized by the Heterovalent Substitution Strategy?

Author

Ye Yang; Zuizhi Lu; Hua Fan; Mianhong Chen; Linawa Shen; Xinguo Zhang; Qi Pang; Jianhua Chen; Peican Chen; Liya Zhou

Publisher

American Chemical Society (ACS)

Published

2023

Language

EN

Field

Chemistry (Physical Sciences)