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Register a new userQuantum yield enhancement in BDMO-PPV
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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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In this work, we demonstrate the formation of a red-phase poly[2-methoxy, 5-(2- ethyl-hexoxy)-1,4-phenylene vinylene-PPV] (MEH-PPV) embedded into a host matrix of highly entangled ultra-high molecular weight polystyrene (MEH-PPV/UHMW PS pseudogel) that allows the simple processing of the MEH-PPV solutions. We processed a red-phase in the gel, the gel shows that the features what have beed demonstrated in the solution can be observed in the processable gel for optoelectronics applications. [Yamagata, Hajime, and Hestand, Nicholas J. and Spano, Frank C. and Ku007fohler, Anna and Scharsich, Christina and Hoffmann, Sebastian T. and Bu007fassler, Heinz, The Journal of Chemical Physics, 2013, 139, 114903]
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