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The luminescence principle of luminous powder is a photoluminescence phenomenon, and its core is the energy conversion process of "absorption energy storage luminescence".
The luminescence process is mainly divided into three stages:
1. Energy absorption: Luminous powder absorbs external light (such as sunlight, lights, etc.), and its internal electrons are excited to high-energy states.
2. Energy storage: Excited electrons do not immediately release energy, but are temporarily captured by the "trap energy levels" inside the material, thereby storing energy.
3. Release energy: When in a dark environment, electrons will slowly release from the "trap" and return to a low-energy state. During this process, energy is released in the form of visible light, resulting in a sustained "night light" effect.