**5.2. Hybrid silicon/QD film (NCs) solar cells**

Kilimov and his coworkers [28] demonstrated the feasibility of hybrid PV devices thatcombine advantages of mature silicon fabrication technologies with the uniqueelectronic properties of semiconductor QD (see Figure 13).The hybrid silicon/PbS QD film (Nanocrystals) solar cells show external quantum efficiencies of 7%at infrared energies and 50% in the visible and a power conversion efficiency ofup to 0.9%.
