Organic light-emitting devices (OLEDs) can exhibit an efficiency rotlrdfft under high current excitation that has been previously modeled using bhaolecular quenching. The corresponding transient electroluminescence behavior has not been as effectively treated Here, we reproduce both the steady-state and transient regimes by introducing into the analysis a dynamic polaron population. This approach permits a rigorous definition of OLED charge balance in terms of dynamics as the exciton formation efficiency.
|Original language||English (US)|
|Number of pages||4|
|Journal||Digest of Technical Papers - SID International Symposium|
|State||Published - 2017|
|Event||SID Symposium, Seminar, and Exhibition 2017, Display Week 2017 - Los Angeles, United States|
Duration: May 21 2017 → May 26 2017
Bibliographical noteFunding Information:
This work was supported by The Dow Chemical Company. The authors acknowledge useful discussions with Dr. D. Wayne Blaylock. R.J.H. is a member of the Dow Chemical Company Technical Advisory Board.
© (2017) by SID-the Society for Information Display. All rights reserved.
Copyright 2018 Elsevier B.V., All rights reserved.
- Charge balance
- Efficiency roll-off
- Exciton formation
- Exciton-exciton annihilation
- Exciton-polaron quenching