Regensburg 2010 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 62: Poster II: Photovoltaics and Organic Semiconductors
HL 62.20: Poster
Donnerstag, 25. März 2010, 18:00–20:00, Poster D2
Limits for the efficiency improvement of hybrid dye- microcrystalline silicon solar cells — •Sven Burdorf1, Max Meessen1, Rudolf Brüggemann1, Andreas Decker2, Thomas Mayer2, Wolfram Jägermann2, and Gottfried H. Bauer1 — 1Institut für Physik, Carl von Ossietzky Universität, 26111 Oldenburg — 2Fachbereich Materialwissenschaften, Technische Universität Darmstadt, 64287 Darmstadt
Recently hybrid solar cells consisting of dye sensitizers embedded in a microcrystalline silicon thin film matrix have been proposed and even recently processed [1]. The dye sensitizers are introduced to the matrix due to their high absorption coefficients and therefore enhance the absorption of the dye-matrix-system. A microcrystalline silicon matrix is chosen because it is fairly "forgiving" to distortions introduced by the dye molecules and transport properties of charge carriers are still acceptable. In this contribution we present calculations for the efficiency improvement of hybrid dye-microcrystalline silicon solar cells compared to pure microcrystalline solar cells. The calculations were performed for varying thicknesses of the microcrystalline silicon layer, dye concentrations and wavelength of maximum absorption of the dye.
[1] T. Mayer et al., Renewable Energy 33, 262-266 (2008)