Regensburg 2016 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 58: Organic Photovoltaics and Electronics
HL 58.5: Vortrag
Mittwoch, 9. März 2016, 16:00–16:15, H2
Development of a photocapacitor based on printed solar cells and supercapacitors — •Katrin Anneser1, Lukas Hörlin2, Stephan Braxmeier1, Andreas Baumann1, Gudrun Reichenauer1, and Vladimir Dyakonov1,2 — 1Bavarian Center for Applied Energy Research (ZAE Bayern), 97074 Würzburg — 2Experimental Physics VI, Julius Maximilian University of Würzburg, 97074 Würzburg
The main drawbacks of renewable energy sources such as wind and solar energy are unpredictable power fluctuations presenting a major challenge to stability and efficiency of the grid. With increasing fraction of these intermittent energy sources it is necessary to smooth the power before feeding it into the grid without just cutting off the fluctuations. We are following the few previous research activities aiming at combining a fast energy storage device, a supercapacitor, and a solar cell. Rather than developing a modular system our objective is an integrated layered system provided by printing the components from solution processed precursors. Those combined cells will provide a more constant power output compared to stand-alone photovoltaic systems and thus allow feeding into storage units with far slower kinetics (e.g. batteries) or the grid. We present the concept and the related boundary conditions and problems to be solved. Furthermore, we show experimental data from solar cells measured at a high frequency (every second) and derive the basic requirements in terms of power and energy density required for the storage unit per m2 of the integrated system from these data.