Dresden 2014 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 35: Organic semiconductors: Photovoltaics (with CPP/DS/O)

HL 35.3: Vortrag

Dienstag, 1. April 2014, 10:30–10:45, POT 081

Improving efficiency of solar power generation by combination of a sensitized mesoscopic solar cell with a thermoelectric generator — •Hans-Fridtjof Pernau, Jana Heuer, Karina Tarantik, Alexandre Jacquot, Jan D. König, Martin Jägle, and Kilian Bartholomé — Fraunhofer IPM, Freiburg, Germany

Standard photovoltaic(PV) solar cells use only about half of the light spectrum provided by the sun. The infrared part is not used for producuction of electrical energy. Even further, the infrared light heats up the pv cell and decreases thereby its efficiency. The basic idea for a combined pv and thermoelectric solar cell has been published in 2008 [1]. The improvements in thermoelectric materials and scientific work on thermoelectrics lead to new ideas for those systems [2] which will be investigated in the EU-FP7-Projekt Globasol. Within the project, a hybrid solar cell made of a sensitized mesoscopic solar cell and a thermoelectric generator (TEG) will being developed. The light of the sun is split at about 800nm. The visible and ultra violet part is transfered to the sensitized mesoscopic solar cell, the infrared part illuminates the TEG cell. With the hybrid solar cell, the full solar spectrum is exploited. We present the first modeling results of the project and the first evaluation version of the hybrid cell.

[1] T.M. Tritt, H. Böttner and L. Chen, *Thermoelectric: Direct Solar Thermal Energy Conversion*, MRS Bulletin, vol.33 (2008) pp. 366-368; [2] D. Kraemer et al., *High-performance flat panel solar thermoelectric generator with high thermal concentration*, Nature materials vol.10 (2011) pp. 532-538.

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