Solid cyclooctatetraene-based triplet quencher demonstrating excellent suppression of singlet–triplet annihilation in optical and electrical excitation

Mai Van T. N., Viqar Ahmad, Masashi Mamada, Toshiya Fukunaga, Atul Shukla, Jan Sobus, Gowri Krishnan, Evan G. Moore, Gunther G. Andersson, Chihaya Adachi (), Ebinazar B. Namdas () and Shih-Chun Lo ()
Additional contact information
Mai Van T. N.: The University of Queensland
Viqar Ahmad: The University of Queensland
Masashi Mamada: Kyushu University
Toshiya Fukunaga: Kyushu University
Atul Shukla: The University of Queensland
Jan Sobus: The University of Queensland
Gowri Krishnan: Flinders University
Evan G. Moore: The University of Queensland
Gunther G. Andersson: Flinders University
Chihaya Adachi: Kyushu University
Ebinazar B. Namdas: The University of Queensland
Shih-Chun Lo: The University of Queensland

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Triplet excitons have been identified as the major obstacle to the realisation of organic laser diodes, as accumulation of triplet excitons leads to significant losses under continuous wave (CW) operation and/or electrical excitation. Here, we report the design and synthesis of a solid-state organic triplet quencher, as well as in-depth studies of its dispersion into a solution processable bis-stilbene-based laser dye. By blending the laser dye with 20 wt% of the quencher, negligible effects on the ASE thresholds, but a complete suppression of singlet–triplet annihilation (STA) and a 20-fold increase in excited-state photostability of the laser dye under CW excitation, were achieved. We used small-area OLEDs (0.2 mm2) to demonstrate efficient STA suppression by the quencher in the nanosecond range, supported by simulations to provide insights into the observed STA quenching under electrical excitation. The results demonstrate excellent triplet quenching ability under both optical and electrical excitations in the nanosecond range, coupled with excellent solution processability.

Date: 2020
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-020-19443-z Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19443-z

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-020-19443-z

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().