Modulation of Exciton Generation in Organic Active Planar pn Heterojunction: Toward Low Driving Voltage and High-Efficiency OLEDs Employing Conventional and Thermally Activated Delayed Fluorescent Emitters

Dongcheng Chen; Kunkun Liu; Lin Gan; Ming Liu; Kuo Gao; Gaozhan Xie; Yuguang Ma; Yong Cao; Shi-Jian Su

doi:10.1002/adma.201600612

Modulation of Exciton Generation in Organic Active Planar pn Heterojunction: Toward Low Driving Voltage and High-Efficiency OLEDs Employing Conventional and Thermally Activated Delayed Fluorescent Emitters

Adv Mater. 2016 Aug;28(31):6758-65. doi: 10.1002/adma.201600612. Epub 2016 May 12.

Authors

Dongcheng Chen¹, Kunkun Liu¹, Lin Gan¹, Ming Liu¹, Kuo Gao¹, Gaozhan Xie¹, Yuguang Ma¹, Yong Cao¹, Shi-Jian Su¹

Affiliation

¹ State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China.

PMID: 27171215
DOI: 10.1002/adma.201600612

Abstract

Organic light-emitting diodes (OLEDs) combining low driving voltage and high efficiency are designed by employing conventional and thermally activated delayed fluorescence emitters through modulation of excitons generated at the planar p-n heterojunction region. To date, this approach enables the highest power efficiency for yellow-green emitting fluorescent OLEDs with a simplified structure.

Keywords: fluorescent; low driving voltage; organic light-emitting diodes; planar pn heterojunction; triplet harvesting.