Ultra-Narrowband Green-Emitting Transparent Composite Ceramics for Laser-Driven Display

Ultra-Narrowband Green-Emitting Transparent Composite Ceramics for Laser-Driven Display

© 2024 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2024) vom: 19. Dez., Seite e2414957
1. Verfasser: Hu, Dahai (VerfasserIn)
Weitere Verfasser: Lin, Shisheng, Pang, Tao, Zeng, Lingwei, Xi, Guoyu, You, Fengluan, Wu, TianShuo, Li, Xiaoshuang, Wang, Bo, Lei, Lei, Huang, Feng, Chen, Daqin
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article laser‐driven projection displays luminescent materials narrowband emitters transparent ceramics
Beschreibung
Zusammenfassung:© 2024 Wiley‐VCH GmbH.
Laser-driven projection displays face a critical challenge in developing laser-excitable and high-performance narrowband green emitters. Herein, new Al2O3-LaMgAl11O19: Mn2+ (Al2O3-LMA: Mn2+) transparent composite ceramics are reported via high-temperature vacuum sintering, which produces a high-color-purity (95.4%) green emission with full width at half maximum of 24 nm and superior thermal and moisture and laser irradiation stability. These are attributed to low electron-phonon couple, weak crystal-field effect, an individual lattice location of Mn2+ activators in high structural rigid host, and the incorporation of a high-thermal-conductivity Al2O3 secondary phase. As a result, the composite ceramics are demonstrated as an attractive color converter with a high external quantum efficiency (38%) and absorption coefficient (53%), which ensures a luminous flux of 2012 lm 40.0 W, a luminous efficacy of 67.7 lm W-1, and a green light conversion efficiency of 20.3% upon blue laser irradiation. This enables to construct a brand-new laser-driven prototype display with a record color gamut beyond Rec.2020 standard (100.8%), outperforming commercial YAG: Ce3+ and β-SiAlON: Eu2+. This exploration in ultra-narrowband green luminescent materials is poised to accelerate the development of "ideal displays" for laser-driven projection display technology
Beschreibung:Date Revised 20.12.2024
published: Print-Electronic
Citation Status Publisher
ISSN:1521-4095
DOI:10.1002/adma.202414957