Jump to main content
Jump to site search


9-Silafluorene and 9-Germafluorene: Novel Platforms for Highly Efficient Red Phosphorescent Organic Light-Emitting Diodes

Abstract

Two novel heterofluorene motifs consisting of the group 14 elements Si and Ge were developed as robust molecular platforms for the construction of OLED materials. These two compounds exhibited similar photophysical properties, thermal stabilities and electrochemical behaviors except the charge transport abilities. The red OLED hosted by 9-silafluorene derivative (DPS) with Ir(MDQ)2(acac) as the emitter exhibited the state-of-the-art current efficiency, power efficiency, and external quantum efficiency (EQE) with maxima of 50.7 cd A-1, 44.7 lm W-1, and 28.3%, respectively. In addition, the maximum EQE of 9-germafluorene derivative (DPG)-based red device can reach 20%. These results indicated the great potential of group 14 elements derivatives in the construction of highly efficient OLED materials.

Back to tab navigation

Supplementary files

Publication details

The article was received on 11 Jun 2018, accepted on 10 Jul 2018 and first published on 12 Jul 2018


Article type: Paper
DOI: 10.1039/C8TC02851F
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
  •   Request permissions

    9-Silafluorene and 9-Germafluorene: Novel Platforms for Highly Efficient Red Phosphorescent Organic Light-Emitting Diodes

    X. Liu, Q. Tian, D. Zhao, Q. Ran, L. Liao and J. Fan, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC02851F

Search articles by author

Spotlight

Advertisements