Research Advances on Human-Eye-Sensitive Long Persistent Luminescence Materials.

Area of Science:

• Materials Science
• Optoelectronics
• Photochemistry

Background:

• Long persistent luminescence (LPL) materials are crucial for applications requiring sustained light emission.
• Human-eye sensitivity to light is highest in the 400-600 nm wavelength range, ideal for night vision applications.
• Existing LPL materials often lack sufficient brightness, duration, or color tunability for practical use.

Purpose of the Study:

• To review recent advancements in human-eye-sensitive LPL materials developed in the last decade.
• To compile a comprehensive list of LPL compounds emitting in the 400-600 nm range with >10 hour duration.
• To highlight novel LPL material research and color regulation strategies for a full color palette.

Main Methods:

• Literature review of LPL materials focusing on human-eye sensitivity (400-600 nm) and long duration (>10 h).
• Compilation and analysis of known LPL compounds meeting the specified criteria.
• Emphasis on the research group's contributions to novel LPL material development and color tuning.

Main Results:

• Identification of numerous LPL materials sensitive to the human eye, emitting light for extended periods (>10 hours).
• Demonstration of research on novel LPL materials with tunable emission colors.
• Summary of challenges and future research directions for visible-light LPL materials.

Conclusions:

• Significant progress has been made in developing human-eye-sensitive LPL materials with long emission durations.
• Novel LPL materials and color control strategies offer potential for a wider range of applications.
• Further research is needed to overcome current limitations and fully realize the potential of LPL technology.