Jump to main content
Jump to site search

Issue 39, 2017
Previous Article Next Article

A novel furo[3,2-c]pyridine-based iridium complex for high-performance organic light-emitting diodes with over 30% external quantum efficiency

Author affiliations

Abstract

A novel furo[3,2-c]pyridine based Ir complex, namely (pfupy)2Ir(acac), has been developed by replacing sulfur with oxygen in the C^N ligand. Compared with the thiophene-containing (pthpy)2Ir(acac), the LUMO level is elevated while the HOMO level remains almost unchanged for the resultant furan-containing (pfupy)2Ir(acac). As a consequence, the emissive maximum is blue-shifted from 556 nm of (pthpy)2Ir(acac) to 538 nm of (pfupy)2Ir(acac) together with an improved photoluminescence quantum yield of 0.80. The corresponding device based on (pfupy)2Ir(acac) realizes a record-high external quantum efficiency (EQE) of 30.5% (110.5 cd A−1) without any out-coupling technology. Even at a luminance of 1000 and 5000 cd m−2, the EQE still remains at 26.6% (96.4 cd A−1) and 25.6% (92.7 cd A−1), respectively, indicative of the gentle efficiency roll-off. The results clearly demonstrate the great potential of furan-based functional materials applied in OLEDs.

Graphical abstract: A novel furo[3,2-c]pyridine-based iridium complex for high-performance organic light-emitting diodes with over 30% external quantum efficiency

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Aug 2017, accepted on 13 Sep 2017 and first published on 14 Sep 2017


Article type: Communication
DOI: 10.1039/C7TC03937A
Citation: J. Mater. Chem. C, 2017,5, 10122-10125
  •   Request permissions

    A novel furo[3,2-c]pyridine-based iridium complex for high-performance organic light-emitting diodes with over 30% external quantum efficiency

    Z. Yan, Y. Wang, J. Wang, Y. Wang, J. Ding and L. Wang, J. Mater. Chem. C, 2017, 5, 10122
    DOI: 10.1039/C7TC03937A

Search articles by author

Spotlight

Advertisements