Quantum dot-sensitized solar cells (QDSSCs) are a reliable renewable energy source. A QDSSC is assembled with the components in the following order: FTO/TiO2/QD/polysulfide electrolyte/CE/FTO. Recently, multiple efforts have been made to increase the power conversion efficiency of by modifying the materials by optimize chemical and physical properties. In QDSSCs, the counter electrodes (CEs) plays a key role in completing the electrical circuit and in the regeneration of sulfur redox couple through a reduction process. Among the CE materials, copper(I) sulfide (Cu2S) is a promising alternative to Pt CE, primarily due to its favorable electrochemical properties in the S2-/Sn2- redox couple, low cost, and high stability compared to other. In this study, we have reported Cu2S CE deposited Cu-Zn alloy on FTO and removed Zn using HCl after sulfurization. We simply increased surface area of CEs by removing Zn. These samples exhibited better electrocatalytic activity than FTO/Cu2S CEs.