Optimization of Lead Sulfide (PbS) Solar Cell

Renewable energy is known as the clean and green energy. Solar energy is one of those in this modern era. Lead Sulfide (PbS) is one of the most suitable semiconductor materials which absorption coefficient is high. It has the most favorable band gap energy and highly stable along with low cost material. Consequently the investigators have great deliberation to observe the ultra-thin PbS solar cell. The optimization of PbS ultra-thin solar cell has been done at 600 nm thickness of PbS absorber and window layer ZnO has also been done at 50 nm thickness. It is shown that the ultra-thin PbS solar cell has given efficiency of 19.40% $(J_{sc}=28.41\mathrm{mAcm}^{-2}, V_{oc}=0.80$ V and $\mathrm{FF}=0.85$). Hence, it has been investigated the thermal stability of the PbS solar cell. When the temperature is increased from 20°C to 120°C, the TC of the optimization structure is being found at −0.011 %/°C.