Design and Optimization of an Efficient Molybdenum Disulfide (MoS2) Solar cell with Tin Sulfide BSF

Abstract

Two-dimensional molybdenum disulfide (MOS2) is a potential sunlight harvester due to low cost, layered type atomic structure, favorable electrical and optical properties. The performance of a molybdenum disulfide (MOS2) photovoltaic cell is investigated by using the wxAMPS simulator. The hidden potentiality of Mos2is unfolded by using BSF strategy. The photoconversion efficiency is found 21.39% $(\pmb{J_{sc}}=\pmb{29.89}\ \mathbf{mA}/\mathbf{cm}^{\pmb{2}},\pmb{V_{oc}=0.841}\mathbf{V}$ and $\mathbf{FF}=\pmb{0.856}$) for $\mathbf{r}\ \ \pmb{1}\ \ \pmb{\mu} \mathbf{m\ MoS}_{\pmb{2}}$ absorber layer with 100 nm SnS BSF whereas in conventional structure, it is found 19.48% $(\pmb{V_{oc}=0.826}\mathbf{V}, \pmb{J_{sc}}=\pmb{27.848}\ \ \mathbf{mA}/\mathbf{cm}^{\pmb{2}}$, and $\mathbf{FF}=\pmb{0.846)}$ without BSF for 1 $\pmb{\mu} \mathbf{m\ MoS}_{\pmb{2}}$ absorber layer. The measured temperature coefficient (TC) is $\pmb{-0.047\%/}^{\circ}\mathbf{C}$ for conventional photovoltaic cell structure and −0.046^%/°C for a modified structure with SnS BSF. It indicates the better thermal stability of the modified structure compared to the conventional structure.