Highly efficient organic light-emitting diode based on a hidden thermally activated delayed fluorescence channel in a heptazine derivative.
basic_science · Level V
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- Record sourced from PubMed, PMID 23670919.
- Also identified by DOI 10.1002/adma.201300575.
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Abstract
An orange-red organic light-emitting diode containing a heptazine derivative exhibits high performance with a maximum external quantum efficiency of 17.5 ± 1.3% and a peak luminance of 17000 ± 1600 cd m⁻² without any light out-coupling enhancement. The high electroluminescence performance can be ascribed to the presence of an efficient up-conversion channel from the lowest triplet state to the lowest singlet state.
Medical subject headings
- Heterocyclic Compounds, 3-Ring
- Luminescent Measurements
- Organic Chemicals
- Triazines