Problems Arising from Using KOH–IPA Etchant to Texture Silicon Wafers

Wet chemical processing of single-crystal silicon wafers, including their texturing, is a key process step in the fabrication of high-efficiency solar cells. Methods of texturing single-crystal silicon wafers used in solar cell technology have been studied. Optimal texturing parameters have been determined for test samples, and the most effective etchant for texturing, a KOH–isopropanol solution, has been found.