Multiphosphine-Oxide Hosts for Ultralow-Voltage-Driven True-Blue Thermally Activated Delayed Fluorescence Diodes with External Quantum Efficiency beyond 20

Jing Zhang; Dongxue Ding; Ying Wei; Fuquan Han; Hui Xu; Wei Huang

doi:10.1002/adma.201502772

Multiphosphine-Oxide Hosts for Ultralow-Voltage-Driven True-Blue Thermally Activated Delayed Fluorescence Diodes with External Quantum Efficiency beyond 20

Adv Mater. 2016 Jan 20;28(3):479-85. doi: 10.1002/adma.201502772. Epub 2015 Nov 20.

Authors

Jing Zhang¹, Dongxue Ding¹, Ying Wei^{1

2}, Fuquan Han¹, Hui Xu^{1

2}, Wei Huang²

Affiliations

¹ Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education and School of Chemistry and Material Science, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, P. R. China.
² Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816, P. R. China.

PMID: 26588189
DOI: 10.1002/adma.201502772

Abstract

Highly efficient low-voltage-driven -true-blue thermally activated -delayed fluorescence diodes are realized through employing a tri-phosphine oxide host (2,2',4-tris(di(phenyl) -phosphoryl)-diphenylether (DPETPO)) with a record external quantum efficiency of 23.0% and the lowest onset voltage of 2.8 V to date.

Keywords: electroactivity; fluorescence diodes; phosphine oxide hosts; spatial function distribution; true-blue emission.