Efficient and Tunable Near-Infrared Luminescence in Cubic Phosphate K₂AlTi(PO₄)₃:Cr³⁺ for Spectroscopy Applications

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(31), P. 41119 - 41126

Published: July 29, 2024

Broadband near-infrared (NIR) phosphors are crucial components of NIR phosphor-converted light-emitting diode (pc-LED) sources for various smart spectroscopy applications. However, developing an efficient, tunable, and inexpensive broadband phosphor with sufficient spectral coverage remains a great challenge. In this work, cubic phosphate K2AlTi(PO4)3 highly structural rigidity was chosen as host material Cr3+ substitution to create efficient emission. Synthesizing compound, the obtained exhibits emission covering 700–1200 nm peak wavelength ranging from 820 860 depending on substituting concentration. The concentration optimized sample possesses photoluminescence quantum yield (PLQY) 76.4% centered at 857 full width half-maximum (fwhm) 184 under 464 exaction, demonstrating relatively long-wavelength wide coverage. This is mainly derived single kind center deduced analysis, luminescence dynamics, first-principle calculations. Using material, fabricated pc-LED device presents excellent output power photoelectric conversion efficiency, making attractive in practical applications night-vision bioimaging. Therefore, work not only provides superiorities low cost, high wide-range tunability, coverage, but also highlights some clues discover materials.

Language: Английский

A near-infrared phosphor MgGaBO4:Cr3+ promisingly for photomedicine application

Materials Research Bulletin, Journal Year: 2025, Volume and Issue: unknown, P. 113540 - 113540

Published: May 1, 2025

Language: Английский