Vacuum assisted solution processing for highly efficient Sb2S3 solar cells

Abstract

In this paper, we employ a vacuum assisted solution process (VASP) for fabricating high efficiency Sb₂S₃ solar cells. Our study uncovers that the VASP approach is able to fabricate Sb₂S₃ absorber materials with high crystallinity and phase purity, both contribute to enhanced device performance. By constructing solar cells using TiO₂ nanorod arrays as the electron extraction material, the device efficiency is increased from 4.15% to 6.78%, which is among the top efficiencies in all kinds of Sb₂S₃, Sb₂(S,Se)₃ and Sb₂Se₃ solar cells.