CaLu2Mg2Si3O12:Cr3+garnetsnear-infrared phosphorNIR-LED devicenight visionNear-infrared (NIR) phosphor-converted (pc) light-emitting diode (LED) is a promising next-generation tiny light source for smart and broadband NIR spectroscopy technology. However, NIR phosphors suffer from challenges in ...
Near-infrared (NIR) phosphor-converted light-emitting diode (pc-LED) has emerged as the most promising NIR light source, highlighting the importance of exploring phosphors with excellent efficiency and sufficient spectral coverage. Herein, a garnet Na2CaHf2Ge3O12:Cr3+ phosphor with an internal ...
Figure 5.Schematic energy-level diagram and possible energy transfer paths of Mn4+and Cr3+in the KLGF: Mn4+, Cr3+phosphor. Figure 6.Driving-current-dependent emission spectra of a) NIR pc-LED1 and b) NIR pc-LED...
Cr3+掺杂的氧化物荧光粉的制备及光谱特性研究 摘要 摘要 在现代生产生活中，发光材料作为一种人类生产生活离不开的必需品，一 直受到研究人员的探索研究。如作为绿色照明光源的白光LED就因为其轻便易 携带、寿命周期长、发光效率高、易保存、低成本等优点而受到关注。所以优 秀的荧光粉材质是对这些应用方面有着巨大...
NEAR infrared radiationLUMINESCENCESCANNING electron microscopySPECTRUM analysisLUMINOSITYThe near-infrared (NIR) long persistent phosphors have gained considerable attention owing to the potential applications in in vivo imaging. A novel NIR long-persistent phosphors Zn3Al2Ge3O12:Cr3+......
In addition, the internal quantum efficiency (IQE) of the Zn7Sb2O12: 0.01Cr3+ phosphor is recorded at 33.13%. When encapsulated in pc-LEDs, the phosphor achieves a near-infrared (NIR) output power of 18.90 mW at 160 mA, along with a photoelectric conversion efficiency (PCE) of 15.45% ...
97.4% of the NIR emission at room temperature can be maintained. The fabricated NIR-LED device emits a high optical power of 109.9 mW at 520 mA. The performances of both the achieved phosphor and the NIR-LED are almost the best results until now. The mechanism for the optimization ...
Clearly, LiIn1.97SbO6: 0.03Cr3+ phosphor can be pumped by the most efficient InGaN blue light chips (460 nm), as verified from the emission spectrum monitored by the 492-nm excitation. It is worth noting that the phosphor also exhibits the similar NIR spectrum under 294-nm excitation (...
Achieving a Balance of Good Quantum Efficiency and Thermal Stability in the Y2CaScAl3GeO12:Cr3+ Broadband Phosphor for Multiple NIR Spectroscopy Applications 在用于多种近红外光谱应用的Y2CaScAl3GeO12:Cr3+宽带荧光粉中实现良好量子效率和热稳定性的平衡...
Herein, a design of trivalent chromium‐activated magnesium gallogermanates (Mg 1+ x Ga 2?2 x Ge x O 4 :Cr 3+ ) is demonstrated that exhibit strong near‐infrared afterglow emission at low temperature, e.g., ?80 °C. Notably, this new persistent phosphor can be efficiently activated ...