Solar cells are given antireflection coatings to maximize their efficiency. Consider a silicon solar cell (= 3.50) coated with a layer of silicon dioxide (n = 1.45). What is the minimum coating thickness that will minimize the reflection at the wavelength of 700 nm, where solar cells are most efficient?

Solar cells are given antireflection coatings to maximize their efficiency. Consider a silicon solar cell (= 3.50) coated with a layer of silicon dioxide (n = 1.45). What is the minimum coating thickness that will minimize the reflection at the wavelength of 700 nm, where solar cells are most efficient?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter3: Interference

Section: Chapter Questions

Problem 47P: To save money on making military aircraft invisible to radar, an inventor decides to coat them with...

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Concept explainers

Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.

Question

Solar cells are given antireflection coatings to maximize their
efficiency. Consider a silicon solar cell (= 3.50) coated with a layer of
silicon dioxide (n = 1.45). What is the minimum coating thickness
that will minimize the reflection at the wavelength of 700 nm,
where solar cells are most efficient?

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