Fabrication and characterization of down-conversion layers for NIR OLEDs
Group: Light-emitting and excitonic organic semiconductors (LEXOS)
Institute: Institute of applied physics
Target group: Bachelor and Master student in physics,
chemistry or OME (Organic and Molecular electronics)
The LEXOS group is looking for a Bachelor or Master candidate who investigates options for solution processing down-conversion layer for organic light-emitting diodes. The institute has long experience and tradition in manufacturing OLEDs for the visible spectral range [1]. Growing industrial interests for infrared-emitting devices cannot be met, however, by conventional device fabrication technologies.
We therefore aim at using established OLED fabrication routines and applying an efficient down-conversion layer (red IR or green IR). This project in particular aims at producing efficient solution-processed layers based on colloid nanocrystals [2]. It therefore contains the following
Work packages (WPs):
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Insight into several solution processing techniques, such as spray coating, blade coating, inkjet printing, spin coating and drop casting (see Wikipedia for basic understanding)
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Spectroscopic characterization and optimization of NIR-emitting blends
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Optional: Setting up an experiment that can optically characterize NIR OLEDs
Requirements:
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WPs 1 and 2 are lab-based experimental work. You should be willing to work with solutions in a cleanroom area and should be interested in dealing with spectroscopy.
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WP 3 is optional or may even be regarded as a separate thesis. It aims at characterizing an infrared-emitting LED and therefore requires the student to be interested in learning python-based evaluation routines and hardware-software communication (based on Sweep Me!)
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This WP is not necessarily related to handling chemicals or exceeding experimental work.