Molecular structures of the investigated compounds and molecular design strategy.
Steadystate PL (at 298 and 77 K) and phosphorescence (at 77 K with a delay time of 5 ms) spectra of the investigated compounds in toluene solvent (10?5 m), and their photophysical parameters of kf and knr + kisc.
a) Steady-state PL spectra in air and vacuum status, and phosphorescence spectra in vacuum with a time delay of 5–10 ms. b) Transient phosphorescence decay spectra. c) Time-resolved PL spectra; d ?P and triplet state non-radiative rates ( ) at different temperatures in vacuum of the investigated compounds in 10 wt% doped mCP films.
a) Calculated energy level diagram, SOC matrix elements, and NTOs of PXSeDRZ. b) Representative molecular vibration modes and corresponding Huang–Rhys (H–R) factors, and intramolecular interaction visualized by independent gradient model based on Hirshfeld partition (IGMh) analyses.
a) Energy-level diagram and architecture of the OLED devices. b) EQE-J curves of the OLED devices. c) J–V–L curves of the OLED devices. d) EL spectra of the OLED devices detected at 1 cd m?2.
三、論文信息
Advanced Science
Highly Efficient Purely Organic Phosphorescence Light-Emitting Diodes Employing a Donor–Acceptor Skeleton with a Phenoxaselenine Donor
Zijian Chen, Mengke Li, Qing Gu, Xiaomei Peng, Weidong Qiu, Wentao Xie, Denghui Liu, Yihang Jiao, Kunkun Liu, Jiadong Zhou, Shi-Jian Su
First published: 20 February 2023
https://doi.org/10.1002/advs.202207003
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