Work

Efficient up-conversion of triplet excitons into a singlet state and its application for organic light emitting diodes

Year: 2011

Type: article

Abstract: A material possessing a very small energy gap between its singlet and triplet excited states, ΔE1−3, which allows efficient up-conversion of triplet excitons into a singlet state and leads to efficient thermally activated delayed fluorescence (TADF), is reported. The compound, 2-biphenyl-4,6-bis(12-phenylindolo[2,3-a] carbazole-11-yl)-1,3,5-triazine, breaks the restriction of a large energy gap, with a ΔE1−3 of just 0.11 eV, while maintaining a high fluorescent radiative decay rate (kr∼107). The intense TADF provides a pathway for highly efficient electroluminescence.

Source: Applied Physics Letters

DOI: 10.1063/1.3558906

Authors: Ayataka Endo, Keigo Sato, Kazuaki Yoshimura, Takahiro Kai, Atsushi Kawada, Hiroshi Miyazaki, Chihaya Adachi

Institutions: Kyushu University, Center for Organic Photonics and Electronics Research, Kyushu University, Nippon Steel Chemical and Material (Japan)

Language: English

Topic: Organic Light-Emitting Diodes Research

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W1966957194

FWCI: 24.35

Cites: 14

Cited by: 1,219

Related to: 9