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Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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UV-A,B,C Emitting Persistent Luminescent Materials.

Suchinder K Sharma1, Jinu James1, Shailendra Kumar Gupta1

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Materials (Basel, Switzerland)
|January 8, 2023
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Persistent luminescence materials, especially UV-emitting ones, are gaining interest for applications in information storage, phototherapy, and photocatalysis. This review summarizes recent advancements in UV-emitting persistent luminescent materials.

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Area of Science:

  • Materials Science
  • Solid State Physics
  • Photochemistry

Background:

  • Persistent luminescence (PL) research was revitalized by the discovery of strontium aluminate phosphors in 1996.
  • Efforts focus on developing efficient, long-decay PL materials for diverse applications.
  • Visible light emitters (400-650 nm) have been extensively studied, with extensions above 650 nm for biological uses since 2014.

Purpose of the Study:

  • To review recent developments in UV-emitting persistent luminescent materials.
  • To highlight potential applications of UV-emitting PL materials.
  • To inspire researchers in the field of luminescent materials.

Main Methods:

  • Literature review of recent advancements in UV-emitting persistent luminescent materials.
  • Analysis of material properties and synthesis techniques.
  • Exploration of application-specific research trends.

Main Results:

  • UV-emitting persistent luminescent materials are emerging as a significant research area.
  • These materials show promise for applications in information storage, phototherapy, and photocatalysis.
  • Recent research has expanded the scope of persistent luminescence beyond visible and near-infrared regions.

Conclusions:

  • UV-emitting persistent luminescent materials represent a dynamic and growing field.
  • Further research is encouraged to explore the full potential of these materials.
  • This review aims to guide and motivate future investigations in luminescent materials science.