Regensburg 2022 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 28: Organic Semiconductors 1
HL 28.5: Vortrag
Donnerstag, 8. September 2022, 10:45–11:00, H34
Development of an OLED as excitation light source for photocatalytic active materials — •Dominik Weber1, Daniel Schondelmaier1, Teresa I. Madeira2, Salvan Georgeta2, Annika Morgenstern2, and Dietrich R.T. Zahn2 — 1Westsächsische Hochschule Zwickau, Faculty of Physical Engineering and Computer Sciences/ Nanotechnology, Zwickau, Deutschland — 2Technische Universität Chemnitz, Physics Department / Semiconductor Physics, Chemnitz, Deutschland
Since its first publication in 1987 by Tang and VanSlyke, organic light-emitting diodes (OLEDs) have been in the focus of science for more than 3 decades and have been continuously improved. Especially in the field of RGB OLEDs, substantial progress has been achieved in terms of lifetime and efficiency, which is why they are used today in particular in the display and solid-state lighting technology.
The work presented focuses on the optimization of UV-to-blue OLEDs for use as an illumination source and a source of excitation for photocatalytic active layers. Therefore, an OLED with a suitable characteristic (wavelength, lifetime, efficiency) is developed, by studying the influences of different materials, layer systems, and the integration of nanostructures. Additionally, the photocatalytic active layer titanium dioxide is generated and optimized (absorption behavior, effectiveness), which can be realized by thermally excited phase conversion. The relationship between photocatalytic activity and the phase composition will be investigated here.