Energy transfer from singlet to triplet excited states in organic light-emitting device

摘要

The single-layer devices using a mixture film of triplet emitting material Cu_4(C ident to CPh_4)L_2(L=1,8-bis (diphenylphosphino)-3,6-dioxaoctane) (Cu_4), the electron transport molecule 2-(4-biphenyl)-5-(4-t-butylprenyl)-1,3,4-oxadiazole (PBD) and the hole transport polymer poly (9-vinylcarbaxole) (PVK) have demonstrated practicality of enhanced efficiencies. Both Forster and Dexter energy transfer were involved in the device.