Spirophenylacridine‐2,7‐(diphenylphosphineoxide)‐fluorene: A Bipolar Host for High‐Efficiency Single‐Layer Blue Phosphorescent Organic Light‐Emitting Diodes - Archive ouverte HAL Access content directly
Journal Articles Advanced Optical Materials Year : 2020

Spirophenylacridine‐2,7‐(diphenylphosphineoxide)‐fluorene: A Bipolar Host for High‐Efficiency Single‐Layer Blue Phosphorescent Organic Light‐Emitting Diodes

(1) , (2) , (1) , (1) , (3) , (4) , (5, 4) , (6) , (1) , (1)
1
2
3
4
5
6

Abstract

Herein, a high-efficiency host material for single-layer phosphorescent organic light-emitting diodes (SL-PhOLEDs) is reported. This host material is synthesized via an efficient approach and is constructed on the association of an electron-rich phenylacridine unit connected by a spiro carbon atom to an electron-deficient 2,7-bis(diphenylphosphineoxide)-fluorene. In addition to a high ET value and adequate highest occupied molecular orbital/lowest unoccupied molecular orbital energy levels, the key point in this molecular design is the suitable balance between hole and electron mobilities, which leads to a high-performance blue SL-PhOLED with an external quantum efficiency of 17.6% (current efficiency = 37.8 cd A−1 and power efficiency = 37.1 lm W−1) and a low Von of 2.5 V. This performance shows that the molecular design of the present host fulfills the criteria required for high-efficiency SL-PhOLEDs. The present performance is one of the highest reported to date for blue SL-PhOLEDs and more importantly shows the potential of such a molecular design to reach very high-performance single-layer devices.
Fichier principal
Vignette du fichier
Lucas et al-2020-Spirophenylacridine‐2,7‐(diphenylphosphineoxide)‐fluorene-Revised.pdf (1.2 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

cea-02354953 , version 1 (25-03-2020)

Identifiers

Cite

Fabien Lucas, Olzhas Ibraikulov, Cassandre Quinton, Lambert Sicard, Thomas Heiser, et al.. Spirophenylacridine‐2,7‐(diphenylphosphineoxide)‐fluorene: A Bipolar Host for High‐Efficiency Single‐Layer Blue Phosphorescent Organic Light‐Emitting Diodes. Advanced Optical Materials, 2020, 8 (2), pp.1901225. ⟨10.1002/adom.201901225⟩. ⟨cea-02354953⟩
247 View
177 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More