Skip to Main content Skip to Navigation
Journal articles

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

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.
Document type :
Journal articles
Complete list of metadatas

Cited literature [52 references]  Display  Hide  Download

https://hal-cea.archives-ouvertes.fr/cea-02354953
Contributor : Serge Palacin <>
Submitted on : Wednesday, March 25, 2020 - 10:46:22 AM
Last modification on : Friday, July 10, 2020 - 4:10:29 PM

File

Lucas et al-2020-Spirophenylac...
Files produced by the author(s)

Identifiers

Citation

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, Wiley, 2020, 8 (2), pp.1901225. ⟨10.1002/adom.201901225⟩. ⟨cea-02354953⟩

Share

Metrics

Record views

363

Files downloads

397