Preparation of ZnS microdisks using chemical bath deposition and ZnS/p-Si heterojunction solar cells

•This work reported novel microdisk ZnS using the chemical bath deposition.•The AZO/ZnS/p-Si heterojunction solar cell is given for the first time.•The ZnS film with a thickness of 300 nm has been shown to achieve for η=2.72%.

The synthesis and heterojunction solar cell properties of ZnS microdisks prepared by the chemical bath deposition method were investigated. The ZnS deposited on the p-Si blanket substrate exhibits good coverage. The lower reflectance spectra were found as the thickness of the ZnS film increased. The optical absorption spectra of the 80 °C ZnS microdisk exhibited a band-gap energy of 3.4 eV and the power conversion efficiency (PCE) of the AZO/ZnS/p-Si heterojunction solar cell with a 300 nm thick ZnS film was η=2.72%.