Enhancement of efficiency by embedding ZnS and Mn-doped ZnS nanoparticles in P3HT:PCBM hybrid solid state solar cellsUzma Jabeen, Tham Adhikari, Syed Mujtaba Shah, Jean-Michel Nunzi, Amin Badshah and Iqbal AhmadEur. Phys. J. Appl. Phys., 78 3 (2017) 34810DOI: https://doi.org/10.1051/epjap/2017170102