Process Minimizes Contact Reflectance in Solar Cells
STANFORD, Calif., Nov. 30, 2015 — Electrical contacts take up 5 to 10 percent of the surface of conventional solar cells, reflecting sunlight and hampering power generation.
A simple chemical reaction can cause those contacts to recede while exposing more of a cell's energy-harvesting semiconductor material to the light. The method could boost the efficiency of conventional silicon solar cells from 20 percent to 22 percent, according to researchers at Stanford University.
"Using nanotechnology, we have developed a...