Question

Solar cells are often coated with a transparent, thin film of silicon monoxide (n = 1.45) to minimize reflective losses from the surface. Suppose a silicon solar cell (n = 3.5) is coated with a thin film of silicon monoxide. Determine the minimum film thickness that produces the least reflection at a wavelength of 550 nm.

Answer 1

94.82 nm

Step-by-step explanation:

We have given that wavelength
`\lambda=550\ nm`

We have to find the minimum film thickness that produces the least reflection

minimum thickness is given by
`t=(\lambda )/(4n)`

here n is given n=1.45

so minimum thickness
`t=(550 )/(4* 1.45)=94.82\ nm`

so the minimum film thickness will be 94.82 nm