Q-cells Se

Hanwha Q Cells Gmbh

Sven Wanka

Peter Engelhart

Wilhelmus Mathijs Marie Kessels

Gijs Dingemans

Björn Faulwetter-Quandt

A solar cell includes a semiconductor layer, a collecting layer for collecting free charge carriers from the semiconductor layer and a buffer layer which is arranged between the semiconductor layer and the collecting layer. The buffer layer is designed as a tunnel contact between the semiconductor layer and the collecting layer. The buffer layer essentially includes a material with a surface charge density of at least 10cm, preferably of at least 5&#xd7;10cm, and more preferably of at least 10cm.

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Leipzig, Germany

Sven Wanka