Question: what are third generation solar cells?
Answer: Third-generation photovoltaic cell. Third-generation photovoltaic cells are solar cells that are potentially able to overcome the Shockley–Queisser limit of 31–41% power efficiency for single bandgap solar cells. ... Emerging photovoltaics include: Copper zinc tin sulfide solar cell (CZTS), and derivates CZTSe and CZTSSe.