Various mechanisms can be optimized to reach the efficiency limit in solar cells, as stated by Shockley and Queisser. Among these mechanisms, one crucial aspect is the optimization of the transparent conductive oxide (TCO) located in front of the device. The TCO is responsible for the extraction of photogenerated carriers and serves as a window for the Sun's light. Moreover, generating periodic micro- and nanostructures on the surface of TCOs could lead to an overall increase in transmittance and surface area, potentially resulting in enhanced efficiency. In this study, direct laser interference patterning (DLIP) was employed to modify fluorine-doped tin oxide (FTO) thin films. Afterward, these were used as TCOs for perovskite quantum dots (QD) solar cells.