US 12,096,685 B2
Persistent luminescence emitter
Kazuya Jinnai, Fukuoka (JP); Ryota Kabe, Kunigami-gun Okinawa (JP); and Chihaya Adachi, Itoshima (JP)
Assigned to OKINAWA INSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL CORPORATION, Okinawa (JP)
Filed by Okinawa Institute of Science and Technology School Corporation, Okinawa (JP)
Filed on Feb. 1, 2022, as Appl. No. 17/590,251.
Claims priority of application No. 2021-014296 (JP), filed on Feb. 1, 2021.
Prior Publication US 2022/0246861 A1, Aug. 4, 2022
Int. Cl. H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 50/16 (2023.01); H10K 50/18 (2023.01); H10K 101/10 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01)
CPC H10K 85/6572 (2023.02) [H10K 50/11 (2023.02); H10K 50/16 (2023.02); H10K 50/18 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A persistent luminescence emitter emitting light for 0.1 seconds or longer after photo-irradiation of the persistent luminescence emitter stops, wherein:
the persistent luminescence emitter comprises an electron donor molecule and an electron acceptor molecule having a LUMO level of lower than −3.5 eV, and
emission intensity increases by temperature rise after photo-irradiation of the persistent luminescence emitter stops.