Answered: Solar spectrum outside atmosphere Solar…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Silicon has a band gap of 1.1 eV at room temperature.
(a) What wavelength of light would a photon of this energy
correspond to? (b) Draw a vertical line at this wavelength in
the figure shown, which shows the light output of the Sun
as a function of wavelength. Does silicon absorb all, none,
or a portion of the visible light that comes from the Sun?
(c) You can estimate the portion of the overall solar spectrum
that silicon absorbs by considering the area under the
curve. If you call the area under the entire curve “100%,”
what approximate percentage of the area under the curve is
absorbed by silicon?

Solar spectrum outside atmosphere
Solar spectrum at sea level
Ultraviolet
Visible Infrared
1000
1400
1800
Wavelength (nm)
200
600
2200
2600
3000
Increasing flux-

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