Stability improvement of photovoltaic performance in antimony sulfide-based hybrid solar cells

Abstract

Sb₂S₃-based hybrid solar cells were prepared in the combination with electron transporting layer of TiO₂ or ZnO nanoparticles in addition to poly(3-hexylthiophene)-2, 5-diyl/(3, 4-ethylenedioxythiophene): poly(styrene sulfonate), zinc phthalocyanine (ZnPc), or MoO₃ for hole transporting layer. Photovoltaic performance and durability of the hybrid solar cells were compared each other with or without encapsulation by using glass and UV cutoff film. Among these hybrid solar cells, it was found that a combination of glass-ITO/TiO₂/Sb₂S₃/ZnPC/Au encapsulated with glass and UV cut filter has the highest durability with keeping the relative power conversion efficiency of 90% through the stability test under 1 sun at 63°C at a relative humidity of 50% for 1, 500 h.