Question

Solar cells are given antireflection coatings to maximize their efficiency. Consider a silicon solar cell (n=3.50n=3.50) coated with a layer of silicon dioxide (n=1.45n=1.45). What is the minimum coating thickness (but not zero) that will minimize the reflection at the wavelength of 698 nm where solar cells are most efficient?

Answer 1

Salution phase change phase charge then light comes from . rareor medium De = 1.45 and get ref deeted from denser medium, phase ng= 3.50 change of a occurs. Home Both the rays have a pharse conge. Condition for destrueetive interyerienee. 2 net (m+1) for min thickness m=0 given t JE 698 nm . Ang nfs 1.45 t- 698nm 471.45 t = 120: 344 mm et = 120 nm Anguet