High-efficiency fluorescent organic light-emitting devices using sensitizing hosts with a small singlet-triplet exchange energy

Dongdong Zhang; Lian Duan; Chen Li; Yilang Li; Haoyuan Li; Deqiang Zhang; Yong Qiu

doi:10.1002/adma.201401476

High-efficiency fluorescent organic light-emitting devices using sensitizing hosts with a small singlet-triplet exchange energy

Adv Mater. 2014 Aug 6;26(29):5050-5. doi: 10.1002/adma.201401476. Epub 2014 Jun 18.

Authors

Dongdong Zhang¹, Lian Duan, Chen Li, Yilang Li, Haoyuan Li, Deqiang Zhang, Yong Qiu

Affiliation

¹ Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, PR China.

PMID: 24944186
DOI: 10.1002/adma.201401476

Abstract

Materials with small singlet-triplet splits (ΔEST s) are introduced as sensitizing hosts to excite fluorescent dopants, breaking the trade-off between small ΔEST and high radiative decay rates. A highly efficient orange-fluorescent organic light-emitting diode (OLED) is prepared, showing a maximum external quantum efficiency of 12.2%.

Keywords: fluorescent organic light-emitting devices; high efficiency; sensitizing hosts; small singlet-triplet exchange energy; thermally activated delayed fluorescence.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Energy Transfer*
Fluorescent Dyes / chemistry*
Light*
Luminescent Measurements
Organic Chemicals / chemistry*
Semiconductors*

Substances

Fluorescent Dyes
Organic Chemicals