Explanation

The materials that can still emit luminescence after the stop of sunlight and ultraviolet radiation is also called long afterglow luminescent material. Typical representatives of luminous powder are copper activated zinc sulfide (ZnS: Cu) and alkaline earth metal sulfide. It is mainly used for concealed lighting and emergency lighting. They can be mixed into ceramics, glass and plastics to make luminescence ceramics, luminescence glass and luminescence plastics. Because these materials luminescence in the dark, they play a role in facilitating life. The luminescence materials can maintain the minimum brightness within tens of minutes after being coated on the aircraft dashboard and irradiated by ultraviolet light before takeoff.

Classification