Tunable emission from solid-solution phosphors Ba3(Sb,Ta)Ga3Si2O14:Bi3+,Eu3+ for diverse optical applications

Materials Today Chemistry, Journal Year: 2025, Volume and Issue: 44, P. 102524 - 102524

Published: Jan. 19, 2025

Language: Английский

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Dual-Functional Carbon Dot Films: Blue-Light Filtration and Cyan-Light Conversion for Healthier White Light-Emitting Diodes

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Blue light emitted by commercial white light-emitting diodes (WLEDs) in the 440-470 nm range poses ocular health risks with prolonged exposure. Effective filtration is crucial for health-conscious lighting, but traditional filters often cause color distortion completely removing blue emission. In this study, we address challenge synthesizing carbon dots (CDs) strong absorption at 460 and bright cyan emission 485 nm, featuring a photoluminescence quantum yield of 65% narrow full width half-maximum 30 nm. When embedded poly(vinyl alcohol) (PVA) matrix, CDs@PVA films effectively filter UV-to-blue light, reducing blue-light ratio from 27.2% to 2.7%. At same time, preserves light's spectral composition, achieving rendering index 83 ± 5. This dual functionality demonstrates potential CDs enable safer WLEDs that improve both lighting quality.

Language: Английский

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Photoluminescence, crystal structure of blue-violet-emitting phosphor Ca2GeO4:Bi3+ for pc-LEDs

Optical Materials, Journal Year: 2024, Volume and Issue: unknown, P. 116616 - 116616

Published: Dec. 1, 2024

Language: Английский

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Ce3+-doped CaSrSiO4 blue phosphor prepared via a novel self-reduction strategy for high-CRI solid-state lighting and visible light communication

Journal of Rare Earths, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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