Patent ID: 7858426

Claim:
A method of texturing a solar cell, the method comprising: texturing a surface of a substrate of the solar cell using a wet etchant, wherein the substrate is a single crystal silicon substrate or a polycrystalline substrate, wherein when the substrate is the single crystal silicon substrate, the wet etchant is an alkaline wet etchant including a surfactant, and when the substrate is the polycrystalline substrate, the wet etchant is an acidic wet etchant including a surfactant, and the alkaline wet etchant is an etchant including an alkaline solution of 0.5 wt % to 23.5 wt % and the surfactant of 0.01 wt % to 0.1 wt % in pure water, and the acidic wet etchant is an etchant including a HF solution of about 5 wt % to 30 wt %, a HNO 3 solution of about 29 wt % to 75 wt %, and the surfactant of about 0.1 wt % to 3 wt % in pure water.