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Abstract
AbstractEndoscopy, a crucial, minimally invasive medical procedure, is poised for significant advancements in the integration of cutting‐edge optical technologies. Although rare‐earth‐doped single‐crystal phosphors offer high‐luminance white light at their endoscope tips via external excitation of a wavelength conversion element, their cost, toxicity, and complex fabrication processes limit their widespread adoption. This study presents a novel approach to the development of biocompatible, cost‐effective phosphors for endoscopic applications. By incorporating carbon dots into a silica glass (xerogel) matrix via a simple sol–gel process, transparent phosphor rods is successfully fabricated. The incorporation of carbon dots reinforced the monolithic phosphor, enabling the fabrication of centimeter‐scale monolithic phosphors. These carbon dot‐doped silica xerogel phosphors exhibits efficient blue‐to‐white light conversion, making them promising candidates for next‐generation endoscopes. This approach offers a sustainable, scalable solution for the development of advanced endoscopic devices with enhanced imaging capabilities and reduced environmental impacts.
Published Version
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