Optics I
Optics II
Solid State Physics & Photoelectric Effect
Solar Cells I
Solar Cells II
100
Law of Reflection
Angle of incidence = angle of reflection
100
When a light beam passes through a slit with a size approx. = the wavelength, light bends around the obstacle.
diffraction
100
electrons kicked off from surface of metal in photoelectric effect
photoelectrons
100
how is the current generated in a solar cell?
electrons & holes move between p-n junction
100
what are p & n type silicon doped with?
p-type: boron; n-type: phosphorous
200
A changing electric field induces a magnetic field, and a changing magnetic field induces an electric field.
electromagnetic self-induction
200
How fast light moves in a medium relative to the speed of light in a vacuum (c).
Index of Refraction (n)
200
When an electric field is applied to a piece of metal, which way do the electrons move?
the opposite way (toward the + charges that make the field)
200
Exposing a-Si to light increases defects over time (it's an effect)
Staebler-Wronski effect
200
first solar cell: when, who, made of…
1883, Charles Edgar Fritts, selenium + gold wires + glass sheet
300
In this type of wave, the electric field, magnetic field, & direction of propagation are mutually perpendicular
linearly polarized wave
300
Speed of light in a medium equation
v = c/n (c = speed of light 3x10^8 m/s; n = index of refraction)
300
Ohm's Law (equation)
I = V/R (I = current, V = voltage, R = resistance)
300
Crystal Growth process: seed crystal, monocrystalline, high purity, low defect silicon cylinder
Czochralski crystal growth process
300
Growth Process: ingot pulled through heater, impurities moved toward ends
floating zone crystal growth process
400
Law of Refraction (Snell's Law)
n1 sin(ϴ1) = n2sin(ϴ2) (n = index of refraction)
400
Name that law: An electric field E can be induced by a changing magnetic field
Faraday's Law of Induction
400
Planck equation
E = hv (E = energy, h = Planck constant, v = frequency)
400
In this type of photovoltaic cells, grain boundaries impede electron flow @ p-n junction
polycrystalline silicon photovoltaic cells
400
In this type of deposition, gaseous silicon strikes a substrate, low temperature & low deposition rate, films aren't uniform, have grain boundaries
Physical Vapor Deposition (PVD)
500
Name that law: a magnetic field H can be created by a current j or induced by an electric field changing in time
Ampere's Law of Induction
500
Name that law: a static electric field D can be made by a charge w/ charge density p (rho)
Gauss's law
500
photoelectric effect equation
hv = Ф + kinetic energy of photoelectron (Ф = work function, aka energy required to kick off electron)
500
In this type of deposition, substrates are limited because of high temperature required
Chemical Vapor Deposition (CVD)
500
This type of deposition is used to make hydrogenated silicon.
Plasma Enchanced Chemical Vapor Deposition (PECVD)
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