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. This includes a range of alternatives to cells made of semiconducting p–n junctions ("first generation") and thin-film cells ("second generation").
Source: Wikipedia — Third-generation photovoltaic cell (CC BY-SA 4.0)