Enhancing the inherent NIR photoluminescence in SrLaLiTeO₆ through Cr³⁺–Yb³⁺ co-substitution for high performance pc-LEDs

Abstract

NIR pc-LEDs developed with Cr3+ and Yb3+ co-doped SrLaLiTeO6 phosphor have promising applications in wearable biosensors and food analysis.

Broadband short-wave near-infrared-emitting phosphor MgNb2O6:Cr3+ for pc-LED applications

“…To comprehensively understand the thermal quenching behavior of MgNb 2 O 6 :Cr 3+ , the activation energy (Δ E ) was calculated by means of the Arrhenius equation, 25,52–54 where I 0 is the initial PL intensity of the luminescent materials at room temperature, I T is the PL intensity of a given absolute temperature T , K is the Boltzmann constant, and A is a constant. The thermal disturbance energy Δ E swas calculated to be 0.473 eV by the typical Arrhenius fitting shown in Fig.…”

Broadband near-infrared luminescence in a cubic pyrophosphate Al0.5Ta0.5P2O7:Cr3+ phosphor for multi-functional applications

“…Furthermore, the activation energy (Δ E ) for thermal quenching is considered as the energy barrier for thermal quenching, which can be obtained by fitting the Arrhenius equation: 58–62 where I t is the emission intensity at temperature T , I 0 is the initial emission intensity, k is the Boltzmann constant (8.617 × 10 −5 eV K −1 ), and A is a constant. The Δ E was fitted to be 0.26 eV (Fig.…”