Ca2YScAl2Si2O12:Cr3+ phosphor-in-glass film for laser-driven high-power near-infrared lighting

Journal of Materials Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A new Ca 2 YScAl Si O 12 :Cr 3+ PiGF was synthesized using rapid infrared firing, highlighting luminous output of 2626 mW under blue laser excitation, for near-infrared lighting applications in nondestructive detection, night vision and bioimaging.

Language: Английский

Fabrication of a Phosphor‐in‐Silica Glass Spectral Converter via Injection Molding for Stable and High‐Power Broadband LEDs

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

Abstract The encapsulation of phosphor particles into a silica glass (PiSG) matrix leads to the formation an efficient and chemically durable spectral converter, which is promising candidate for fabrication stable high‐power phosphor‐converted white light‐emitting‐diodes (pc‐wLEDs). Here, high‐throughput transparent PiSG converters based on Y 3 Al 5 O 12 :Ce 3+ , Mg 2 4 Si 18 :Eu 2+ :Cr demonstrated via injection molding followed by pressureless sintering. as‐fabricated exhibits broadband emission covering visible near‐infrared (vis‐NIR) regions (i.e., 500–900 nm) with high‐luminescence efficiency (> 85%) high‐chemical thermal stabilities, retaining more than 90% its intensity at 200 °C. Consequently, pc‐vis‐NIR‐LEDs (10 W) are manufactured using molded converters, showed excellent luminescence performance luminous (LE) = 115 Im W −1 correlated‐color‐temperature (CCT) 4531 K, color‐rendering‐index (R ) 90.1 50 mA input power 0.45 W). This work enables LEDs low cost outstanding optical properties, making spectral‐converter favorable device lighting bioimaging applications.

Language: Английский

Toward High‐Brightness Laser Lighting: Progress and Perspectives on Phosphor‐in‐Glass Films

Advanced Materials Technologies, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Abstract Laser lighting is considered as a next‐generation solid‐state (SSL) source due to its advantages of high‐power density and brightness, high collimation, long irradiation distance, free “efficiency droop.” Laser‐excited phosphor, in which blue laser diodes (LDs) excite yellow phosphor converter, common method realize white lighting. As novel all‐inorganic converter material with easy preparation, low cost, adjustable luminescent property, ability combine heat‐conducting substrate, the phosphor‐in‐glass film (PiGF) attracts lot attention. In this perspective, state‐of‐art research data on PiGFs are summarized, preparation constitution PiGF introduced. The topics about how improve luminescence saturation threshold (ST), light extraction, color uniformity, rendering discussed. Correspondingly, applications display, biomedical devices, visible communications outlined. Moreover, prospects future directions laser‐driven indicated. This work will promote study high‐performance applications.

Language: Английский