Long Afterglow
Long-lasting storage luminous materials are photoluminescent (Photoluminescence) of a material, the excitation energy is the energy that can be any kind of ambient light, such as: sunlight, lighting, etc.
. The basic principle of this luminescent material is: photoluminescent pigment suppliers a material preparation process, the doped luminescent center-forming element in the matrix and the center of the trap, when excited by external light, the light emitting center Electronic ground state to an excited state, when the electron transition from the excited state to the ground state, light emission is formed. Meanwhile, some of the electrons in the excited when falling into the trap center is bondage. After removal of light , Disturbed by ambient temperature, bound to fall into the trap out of the trap-state electronic energy released to stimulate the formation of a light emitting luminescent center. Since the electron is bound to trap affected by ambient temperature Disturbance Photoluminescent Ceramic gradually out of the trap, so luminous performance of a lengthy process, which formed a long afterglow.
