Work

Intermolecular Interaction and a Concentration-Quenching Mechanism of Phosphorescent Ir(III) Complexes in a Solid Film

Year: 2006

Type: article

Abstract: Solid-state self-quenching processes of highly efficient Ir(III) phosphorescent emitters are investigated by the measurement of thin film photoluminescence quantum efficiency and transient lifetime as a function of doping concentration in a host matrix. The radiative decay rate constant is found to be independent from the average distance between dopant molecules (R), and the concentration-quenching rate constant is shown to be dependent on R(-6). The quenching dependence on R strongly suggests that luminescent concentration quenching in a phosphorescent Ir(III) complex:host film is controlled by dipole-dipole deactivating interactions as described by the Förster energy transfer model.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.96.017404

Authors: Yuichiro Kawamura, Jason Brooks, Julie J. Brown, Hiroyuki Sasabe, Chihaya Adachi

Institutions: Universal Display Corporation, Japan Science and Technology Agency, Chitose Institute of Science and Technology, Center for Future Chemistry, Kyushu University, Kyushu University

Language: English

Topic: Organic Light-Emitting Diodes Research

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W1832861010

FWCI: 14.88

Cites: 15

Cited by: 406

Related to: 10