PERC Solar Cell

A PERC solar cell, short for passivated emitter and rear contact, is a crystalline silicon solar cell built with an extra dielectric layer added to its rear surface. That layer passivates the back of the cell and reflects light that passed through without being absorbed back into the silicon for a second absorption pass, raising the cell efficiency, at the cost of an additional film deposition and an etching step done chemically or with a laser. The design has become the dominant commercial solar cell architecture, used in roughly 80 percent of solar panels made worldwide, and its inventors, Martin Green, Andrew Blakers, Jianhua Zhao and Aihua Wang, won the Queen Elizabeth Prize for Engineering in 2023 for developing it. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/