In this work, the concept of bifacial solar cells is experimentally demonstrated for the first time for pure-selenium kesterite using several transparent back contacts (TBC). This opens the way to new possible applications for kesterite based thin films solar cells like building integration and/or multi-junction devices for better solar spectrum utilization.
The absorbers were produced by using a two step synthesis process (sputtering + reactive annealing) onto transparent conductive oxides. Devices with power conversion efficiencies ranging from 1.8% to 3.3% are here presented.
Espindola-Rodriguez, M., Sánchez, Y., López-Marino, S., Xie, H., Izquierdo-Roca, V., Sylla, D., Neuschitzer, M., Vigil-Galán, O., Saucedo, E. and Placidi, M., 2015, June. Efficient bifacial Cu2ZnSnSe4 solar cells. In Photovoltaic Specialist Conference (PVSC), 2015 IEEE 42nd (pp. 1-3). IEEE.
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Categories: Solar & Photovoltaics