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Your search keyword '"Andrea Gassmann"' showing total 2 results
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2 results on '"Andrea Gassmann"'

1. Strategic Raw Materials

Author

Andrea Gassmann, Katrin Bokelmann, Michael Binnewies, and Rudolf Stauber

Subjects
Engineering, business.industry, General Medicine, business
Published
2019
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2. Influence of triplet excitons on the lifetime of polymer-based organic light emitting diodes

Author

Heinz von Seggern, Oili Pekkola, Andrea Gassmann, Frédéric Laquai, and Fabian Etzold

Subjects
chemistry.chemical_classification, education.field_of_study, Materials science, Ketone, business.industry, Exciton, Population, chemistry.chemical_element, Surfaces and Interfaces, Polymer, Condensed Matter Physics, Photochemistry, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, chemistry, Materials Chemistry, OLED, Optoelectronics, Electrical and Electronic Engineering, education, business, Platinum, Device degradation, Derivative (chemistry)
Abstract

In this work, the harmful effect of triplet excitons on the lifetime of poly(p-phenylene vinylene) (PPV)-based organic light emitting diodes is demonstrated. A model system has been designed in which the triplet population in a PPV derivative is increased by blending the polymer with the triplet sensitizer platinum (II) octaethylporphyrine ketone (PtOEPK). The increase in the triplet concentration of the polymer affects both the initial decay and the long-term evolution of luminance and leads to a drastic acceleration of device degradation, reflected in a dramatically shortened lifetime.

Published
2014
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