荧光粉
宽带
近红外光谱
材料科学
激光器
光电子学
二极管
发光二极管
发光
光学
物理
作者
Long You,Rundong Tian,Tianliang Zhou,Rong‐Jun Xie
标识
DOI:10.1016/j.cej.2021.129224
摘要
Near infrared (NIR) light sources play vital roles in bioimaging, medical treatments, food analysis and machine vision. Herein, we report unusual broadband NIR emission in BaMgAl10O17:Cr3+ (BAM:Cr3+) via site engineering. Both the emission maximum and spectral bandwidth of BAM:Cr3+ can be tailored by controlling the site occupancy of Cr3+ on two different Al sites. The optimal BAM:0.2Cr3+ phosphor exhibits both a sharp line spectrum (λem = 696 nm) and a broadband emission centered at 762 nm, having an internal quantum efficiency (IQE) of ~ 94%. A prototype NIR light source was demonstrated by combining a blue laser diode with BAM:Cr3+ phosphor-in-glass (PiG) and revealed an NIR light output power of 3.4 mW when driven by a 100 mW blue laser diode.
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