Photophysical properties of tris(bipyridyl)ruthenium(ii) thin films and devices

Literature Information

Publication Date 2003-05-08
DOI 10.1039/B302119J
Impact Factor 3.676
Authors

J. D. Slinker, A. A. Gorodetsky, G. G. Malliaras


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Abstract

Absorption and luminescence spectra as well as luminescence lifetimes have been measured for Ru(bpy)2+3 in solution and in thin films of varying thicknesses, and these properties have been correlated with the efficiency of organic light emitting devices (OLEDs) made of the films. The lifetimes decrease for films below about 50 nm in thickness but are relatively constant for thicknesses above about 100 nm. This behavior is consistent with a model in which quenching is caused both by intrinsic properties of the molecules and by Förster energy transfer between chromophores that carries the excitation to surface layers, where the excitation is more efficiently quenched. The external quantum efficiency of the OLEDs is also found to increase with thickness, approaching 1% for thicknesses near 200 nm.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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