申请人:FUDAN UNIVERSITY
公开号:US20220204838A1
公开(公告)日:2022-06-30
Disclosed is a long-afterglow luminescent material, comprising A) at least one light-absorbing agent, B) at least one luminescent agent, and C) at least one photochemical cache agent. The light-absorbing agent and the luminescent agent are compounds having different structures, and the cache agent is selected from one or more compounds of formula (I), (II) and/or (III).
The material has luminescent intensity reaching the level of commercialized inorganic long-afterglow powder SrAl
2
O
4
:Eu
2+
, Dy
3+
, and can emit light when the exciting light is turned off with a light emitting time up to 100 ms to 3600 s.