Non-destructive food-quality analysis using near-infrared luminescence from Mg<sub>3</sub>Gd<sub>2</sub>Ge<sub>3</sub>O<sub>12</sub>:Cr<sup>3+</sup>
Chaojie Li, Małgorzata Sójka, Jiyou Zhong, Jakoah Brgoch
Abstract
= 450 nm). Fabricating a prototype NIR pc-LED device using the title material combined with a 455 nm emitting InGaN LED chip produces a NIR output power of 23.2 mW with photoelectric efficiency of 8.45% under a 100 mA driving current. This NIR light source is then used to demonstrate the quantitative detection of ethanol in solution. These results highlight the feasibility of this material for NIR spectroscopy and validate the prospects of using NIR pc-LEDs in food-quality analysis.
Topics & Concepts
PhosphorLuminescenceMaterials scienceInfraredAnalytical Chemistry (journal)Persistent luminescenceWavelengthNear-infrared spectroscopyOptoelectronicsNuclear chemistryChemistryOpticsPhysicsThermoluminescenceChromatographyLuminescence Properties of Advanced MaterialsLuminescence and Fluorescent MaterialsGas Sensing Nanomaterials and Sensors