Laser-driven NIR light source based on MgO:Cr³⁺,Ni²⁺ phosphor-in-glass film for NIR spectroscopy application

Abstract

Laser-driven lighting technology is a remarkable innovation in the field of solid-state lighting. High-efficiency white light sources have been commercially produced, but laser-driven near-infrared (NIR) light source has not yet...

From Ancient Blue Pigment to Unconventional NIR Phosphor: A Thermal-Stable Near-Infrared I/II Broadband Emission from Ca1–xSrxCuSi4O10 Solid Solution

“…19 Cr 3+ ion is the most widely used TM ion as the NIR emitting center, due to its high emission intensity and tunable wavelength from its 3d 3 electron configurations. 20,21 However, it is toxic to the environment and living organisms, while it is easy to oxidate with a relatively low stability. As an alternative, Cu 2+ is an eco-friendly and chemically stable emitting center with high absorption efficiency, strong NIR luminescence, good chemical and photochemical stability.…”

“…Meanwhile, the long lifetime of NIR emission could avoid the interference of background emission from biological matrices. − Other potential applications of these NIR emitters are NIR spectroscopy in night-vision imaging and nondestructive testing . Cr 3+ ion is the most widely used TM ion as the NIR emitting center, due to its high emission intensity and tunable wavelength from its 3 d 3 electron configurations. , However, it is toxic to the environment and living organisms, while it is easy to oxidate with a relatively low stability. As an alternative, Cu 2+ is an eco-friendly and chemically stable emitting center with high absorption efficiency, strong NIR luminescence, good chemical and photochemical stability.…”

Small Stokes Shift and Two‐Site Occupation in the ANb2O6:Cr3+ (A = Zn/Mg) Phosphors Toward Highly Efficient Ultra‐Broadband Near‐Infrared Emission for Multifunctional Applications

“…A great deal of research has been carried out in exploring new NIR phosphors, including lanthanide ions (Eu 2+ , Yb 3+ , Nd 3+ , or Er 3+ ) and transition metal ions (Cr 3+ , Fe 3+ , or Ni 2+ ) doped materials. [ 11–16 ] In lanthanide ions doped materials, Nd 3+ , Yb 3+ , and Er 3+ only exhibit narrow‐band emission accompanied by weak absorption due to the forbidden transition. [ 17 ] Although Eu 2+ generates broadband emission due to the f‐d parity allowed transition, its long‐wavelength emission mainly concentrates in the red/far red light region and is difficult to extend to the NIR region.…”