Luminescent materials are materials that can absorb energy in some way and convert it into light radiation (non-equilibrium radiation). The process of absorbing energy in a certain way and converting it into light radiation (non-equilibrium radiation) is called luminescence.
In practical application, the solid excited by the outside world is called luminescent material. They can be used in the form of powder, single crystal, thin film or amorphous. The main components are rare earth metal compounds and semiconductor materials, which are closely related to non-ferrous metals.
It can automatically emit light by absorbing all kinds of visible light, and can be recycled for unlimited times. It is green and environment-friendly and does not contain any radioactive elements.
The application of photoluminescent materials in safety is the most common. In terms of safety, photoluminescent materials can be used as safety exit indication marks, evacuation marks, etc. When used as these marks, photoluminescent materials must be strictly tested to ensure that they meet safety standards. The application of photoluminescent materials is different from that of ornaments or other small items in terms of safety. It is required that the luminous materials maintain the brightest illuminance and long-lasting lighting.
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