Quantum yield enhancement in BDMO-PPV
M. J. Deutsch, H. Park
TL;DR
This paper reports an increase in quantum yield of BDMO-PPV during photodegradation, attributed to a new emissive state, which could improve the efficiency of polymer-based optoelectronic devices.
Contribution
It introduces a novel observation of quantum yield enhancement in BDMO-PPV during degradation and proposes a new emissive intermediate state as the cause.
Findings
Quantum yield increases during photodegradation.
Identification of a highly emissive intermediate state.
Potential implications for device efficiency improvement.
Abstract
BDMO-PPV is a photoluminescent semiconducting polymer related to others in the well-studied polyphenylene vinylene family such as MEH-PPV. These materials are known for their instability, degradation, and low efficiency in device operations. We report increased internal and external quantum yield in BDMO-PPV during continuous illumination photodegradation through variations in absorbance, scattering, reflectance, and transmittance of the BDMO-PPV solution. We propose the creation of a highly emissive intermediate photoluminescent state responsible for these increased quantum yields.
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Taxonomy
TopicsOrganic Electronics and Photovoltaics · Organic Light-Emitting Diodes Research · Luminescence and Fluorescent Materials