21ST CENT.AST.W/WKBK+SMARTWORK >BI<
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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
7, What is the range of photon energies for visible light in eV, given that the range of visible wavelengths is 380 to 760 nm?
Emin = _______eVEmax = _______eV.
This is not and will not be graded
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…
Chapter 5 Solutions
21ST CENT.AST.W/WKBK+SMARTWORK >BI<
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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- 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 nmarrow_forward1. Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.6 10-19 J. (a) a photon having a frequency of 2.44 10-3 Hz _________ eV 2.(a) What is the energy in joules of an x-ray photon with wavelength 6.33 10-9 m? ________ J (b) Convert the energy to electron volts. ______ eV PLEASE ANSWER BOTH !!!!arrow_forward4. Briefly explain the motion of carriers in semiconductor materials (i) when there is no electricfield, (ii) when there is electric field, and (iii) when there is illumination.5. Briefly explain how the absorption coefficient and absorption depth change as a function ofwavelength in semiconductor materials. Briefly explain why the absorption coefficient increaseswith increasing photon energy for energies near the bandgap.arrow_forward
- 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. Select one: a.λmax=1009 nm b.λmax=1087 nm c.λmax=1137 nm d.λmax=1115 nmarrow_forwardIf a photon has energy of 4.3 eV, calculate its' wavelength. Report your answer in nm . Your Answer: Answerarrow_forwardWhat will be the energy associated with a red photon, if the wavelength of the red light is 650 nm? [Hint: Find the frequency of red light first to calculate the energy. Recall: c = .f] A. 650x10° J B. 6.5x10 J C. 4.6x1014 J D. 3.0x10-19 J E. 3.0x1019 Jarrow_forward
- What is the wavelength, in nm, of a photon with energy (a) 0.30 eV, (b) 3.0 eV, and (c) 30 eV? For each, is this wavelength visible light, ultraviolet, or infrared?arrow_forwardH.W. For a X/4 dipole: 1. Find the radiation resistance. 2. Maximum directivity and maximum aperture. 3. HPBW and FNBW. 4. Draw the radiation patternarrow_forwardA photon has a wavelength of 560 nm. a) What is the energy of the photon? b) What is the frequency of the photon? Round answers to 2 decimal places a) E = ______________ J b) f = _______________ Hzarrow_forward
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