In the process of making single-crystal Si cells, we usefully etch the surface of Si with alkali which is NaOH in this paper.Then, a special surface which use to catching the light can be made.

• 在单晶硅太阳能电池的制备过程中，常常利用碱液对硅片表面进行腐蚀，从而得到具 有“陷光”作用的绒面，增强硅片对光的吸收。