Developing and optimizing novel Cr³⁺-activated inorganic NIR phosphors by combining triple-objective optimization and crystal field engineering

Abstract

A novel approach combining TOO and CFE for new NIR phosphors development was proposed. Under the guidance of this strategy, LaGa0.5Sb1.5O6:Cr3+ with wavelengths longer than 850 nm and balanced performance was discovered.

Awakening the Dumb Site to Realize Ultra‐Broadband NIR Phosphor

“…Cr 3+ -doped phosphors have the potential to revolutionize the world of near-infrared (NIR) lighting by replacing traditional incandescent and xenon lighting systems with energy-efficient and long-lasting phosphor-converted light-emitting-diode (pc-LED) light sources. [1][2][3][4][5] These pc-LEDs have several technological benefits, such as energy saving, faster start-up, and prolonged lifespan. [6][7][8] However, the current Cr 3+doped NIR phosphors lead to a limited detection capability in NIR spectroscopy applications due to their narrow emission bandwidth of <200 nm and emission wavelengths of <900 nm.…”