Institute for Technical Physics


How can sunlight be converted into electrical energy? How is a solar cell constructed?
Solar panel

The climate protection programme of the German government includes an expansion target for renewable energies to 65% of gross electricity consumption until 2030, with an increase of minimum 80% in 2050.

Photovoltaics plays a major role in our sustainable energy future. On sunny days, photovoltaics can temporarily cover up to 50% of our current electricity consumption. Averaged over the entire year 2019, photovoltaics covered 8.2% of gross electricity consumption in Germany.

The central topic of this station is to explore the structure and function of a solar cell and its advantages and disadvantages compared to other energy sources.


Radiation energy, internal photoelectric effect, semiconductors, solar cells, efficiency