He filled the resulting cavity with a putty of zinc dust, freshened up the electrolyte charge with a squirt of 20% potassium hydroxide, sealed up the cell with a little silicone caulking ...

solar cell based on gallium-doped silicon wafers. All the wafers were initially treated with a potassium hydroxide (KOH) saw-damage etch and KOH anisotropic texturing. B-doped hydrogenated ...