White-blue long persistent luminescence in Ca2Ge7O16:Tb3+ via persistent energy transfer
Source abstract
Abstract
A novel white-blue emitting long persistent phosphor of Ca2Ge7O16:Tb3+ has been prepared by high temperature solid-state reaction. The persistent energy transfer (PET) from Ca2Ge7O16 to Tb3+ was confirmed to be much more efficient than the energy transfer of photoluminescence process. With increasing Tb3+ concentration, the PET efficiency was enhanced and the blue long persistent luminescence (LPL) was accordingly shifted to white-blue. Thermoluminescence spectra show that Tb3+ generates a large amount of suitable traps in Ca2Ge7O16, which bridges the PET from Ca2Ge7O16 to Tb3+, contributing to the improvement of LPL performance. Furthermore, a possible mechanism was illuminated and discussed in detail.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Luminescence and Fluorescent Materials · Radical Photochemical Reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (13)
Show source-provided references
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