Near-infrared long-afterglow materials present significant promise for applications in tracking and imaging technologies. Among these materials, chromium-doped stannates and gallium germanates are crucial, with Mn2+-doped magnesium germanate standing out for its intense afterglow within the 650–1100 nm spectrum, ideal for biomedical use. However, conventional high-temperature synthesis techniques yield particles that are too large for effective biomedical applications. To surmount this challenge, this article turned to hydrothermal synthesis to produce MgGeO3:Mn2+,Yb3+ with enhanced properties. In order to further the research the impact of pH levels and chelating agent ratios on the material's structure, as well as delved into the intricacies of their luminescence mechanisms and structural attributes.
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