Large efficiency improvement in Cu2ZnSnSe4 solar cells by introducing a superficial Ge nanolayer.
11 November 2015
A large improvement in Cu2ZnSnSe4 solar cell efficiency is presented based on the introduction of a Ge superficial nanolayer.
This improvement is explained by three complementary effects: the formation of a liquid Ge-related phase, the possible reduction of Sn multicharge states, and the formation of GeOx nanoinclusions, which lead to an impressive solar cell (VOC) increase.
Giraldo, S., Neuschitzer, M., Thersleff, T., López‐Marino, S., Sánchez, Y., Xie, H., Colina, M., Placidi, M., Pistor, P., Izquierdo‐Roca, V. and Leifer, K., 2015. Large efficiency improvement in Cu2ZnSnSe4 solar cells by introducing a superficial Ge nanolayer. Advanced Energy Materials, 5(21).
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Category: Solar & Photovoltaics