21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 5.1, Problem 5.1BCYU
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A tungesten filament is heated to 2600.0 ∘C. Calculate the wavelength for which the emission spectrum of the filament is maximum assuming that it fully absorbes light at all wavelengths.
Choose:
a.λmax=1009
b.λmax=1115
c.λmax=1137
d.λmax=1087
Light Absorption (Photovoltaics / Mertens)
1. What is the photon energy of light at the wavelength λ = 560 nm in eV? (Planck's constant is
6.6 x 10-34 m2 kg / s)
2. What is the penetration depth of light at the wavelength λ = 560nm in c-Si (crystalline Si) and
a-Si (amorphous Si)?
3.
Light with a wavelength of 600 nm and an irradiance of E= 500 W/m 2 impinges vertically on
to a semiconductor of amorphous silicon. At this wavelength the material has a refractive
index of 4.6.
a. What portion of the light is reflected at the semiconductor surface?
b. What thickness and what refractive index should an anti-reflective film possess in an
ideal case?
Assume SiN is used as an anti-reflective film. What should the thickness of the film be in
this case? (you need to look up the refractive index of SIN)
4. Given is a c-Si cell of thickness d = 140 micormeters that is illuminated by light with a
strength of E= 1000 W/m 2 ,( a = 100/cm; n = 3.3; λ = 1000 nm).
a.
How large is the penetration depth…
Calculate the wavelength radiated by the hot plate at 537 °C.
A.5397 nm
O B. 3580 nm
OC.1556 nm
OD.2347 nm
O E. 3247 nm
Chapter 5 Solutions
21st Century Astronomy
Ch. 5.1 - Prob. 5.1ACYUCh. 5.1 - Prob. 5.1BCYUCh. 5.2 - Prob. 5.2CYUCh. 5.3 - Prob. 5.3CYUCh. 5.4 - Prob. 5.4CYUCh. 5.5 - Prob. 5.5CYUCh. 5 - Prob. 1QPCh. 5 - Prob. 2QPCh. 5 - Prob. 3QPCh. 5 - Prob. 4QP
Ch. 5 - Prob. 5QPCh. 5 - Prob. 6QPCh. 5 - Prob. 7QPCh. 5 - Prob. 8QPCh. 5 - Prob. 9QPCh. 5 - Prob. 10QPCh. 5 - Prob. 11QPCh. 5 - Prob. 12QPCh. 5 - Prob. 13QPCh. 5 - Prob. 14QPCh. 5 - Prob. 15QPCh. 5 - Prob. 16QPCh. 5 - Prob. 17QPCh. 5 - Prob. 18QPCh. 5 - Prob. 19QPCh. 5 - Prob. 20QPCh. 5 - Prob. 21QPCh. 5 - Prob. 22QPCh. 5 - Prob. 23QPCh. 5 - Prob. 24QPCh. 5 - Prob. 25QPCh. 5 - Prob. 26QPCh. 5 - Prob. 27QPCh. 5 - Prob. 28QPCh. 5 - Prob. 29QPCh. 5 - Prob. 30QPCh. 5 - Prob. 31QPCh. 5 - Prob. 32QPCh. 5 - Prob. 33QPCh. 5 - Prob. 34QPCh. 5 - Prob. 35QPCh. 5 - Prob. 36QPCh. 5 - Prob. 37QPCh. 5 - Prob. 38QPCh. 5 - Prob. 39QPCh. 5 - Prob. 40QPCh. 5 - Prob. 41QPCh. 5 - Prob. 42QPCh. 5 - Prob. 43QPCh. 5 - Prob. 44QPCh. 5 - Prob. 45QP
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