Systematic treatment and evaluation of nitride phosphor with hybrid layer modification against moisture degradation
Journal
Chemical Engineering Journal
Journal Volume
430
Date Issued
2022
Author(s)
Abstract
The systematic establishment of processes for developing novel phosphor materials for diverse applications and the moisture stability of these materials are usually ignored. Herein, the experimental protocol of Sr[LiAl3N4]:Eu2+ can be divided into quantum efficiency enhancement with systematic treatments and moisture stability improvement with hybrid coating strategies. The emission intensity of nitride phosphor was greatly increased nearly twofold after Ba3N2 addition, solvent washing, and acid treatment. X-ray absorption near-edge structure revealed changes in Eu2+/Eu3+ during each procedure and the relationship with quantum efficiency. Two approaches for coating inorganic–organic hybrid layers on phosphor surfaces were proposed to overcome degradation. Hybrid coating through atomic layer deposition and sol–gel process remarkably improved the moisture stability of phosphor after a four-hour water-resistance test. Nitride phosphor with a hybrid coating layer showed excellent performance and can thus be a basis of future research for discovering potential phosphor candidates for practical applications. ? 2021 Elsevier B.V.
Subjects
Flux addition
Hybrid layer coating phosphor
Surface modification
Systematic treatments
Atomic layer deposition
Barium compounds
Efficiency
Lithium compounds
Moisture
Nitrides
Phosphors
Quantum efficiency
Sols
X ray absorption
Hybrid coating
Hybrid layer
Moisture degradation
Moisture stability
Nitride phosphor
Phosphor materials
Surface-modification
Systematic treatment
Coatings
SDGs
Type
journal article