Silicon Wafer Semiconductor Applications

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What Applications Are You Using your Silicon Wafers for?

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What are Silicon Wafers Physical Properties?

See below for silicon properties.

Density, g/cm3 2.329
Melting point, °C 1412
Molecular weight 28.09
Surface tension, liquid at mp, mN/m 736
Thermal linear expansion @25°C 2.55 x 10-6
Thermal conductivity @27°C, W/(m x °C) 159
Specific heat capacity (solid), J/(kg x °C) 712
Thermal coefficient of refractive index @ 25°C 1.50 x 10-4
Modulus of rupture, MPa 125
Mohs hardness 7
Young modulus (E), Pa 1.89 x 1010
Shear modulus (G), Pa 7.99 x 1010
Poisson ratio 0.266
Solubility in water insoluble Insoluble

What is the Silicon Wafer Refractive Index?

Below is the refractive index of silicon wafers.

According to the formula

silicon refractive index vs wavelength formula

where e0 = 11.67 is static permittivity, refractive index of
silicon tends to 3.416, when wavelength tends to infinity
(to 1000 μm and more in our case).

Silicon Refractive Index vs Wavelength.

μm n μm n
1.40 3.4900 5.83 3.4241
1.50 3.4841 5.92 3.4239
1.66 3.4700 6.00 3.4238
1.82 3.4600 6.50 3.4232
2.00 3.4561 6.92 3.4228
2.50 3.4431 7.00 3.4227
3.00 3.4360 7.14 3.4226
3.30 3.4326 7.30 3.4225
3.50 3.4317 7.50 3.4224
4.00 3.4289 7.72 3.4222
4.50 3.4270 8.00 3.4220
5.00 3.4256 8.16 3.4220
5.19 3.4200 8.50 3.4218
5.50 3.4246 9.00 3.4216
5.70 3.4243 9.09 3.4215

Silicon Wafer Electrical Properties

Below is a table shows the electrical properties of silicon.

Intrinsic resistivity, kOhm x cm 240
Intrinsic electron drift mobility, cm2/(V x s) 1500
Number of intrinsic electrons, cm-3 .22 x 1010
Ohm x cm (n-type), 1015/cm3 2.93
1 Ohm x cm (p-type), 1015/cm3 7.33
Intrinsic hole drift mobility, cm2/(V x s) 600
Band gap, minimum, eV 300 K 1.14
0 K 1.17














Silicon Wafer Applications

The semiconductor industry generates greater $300 Billion annualy in gross sales. The majority of sales are associated with silicon. A hiccup in this industry, say if Moore's Law is finally reached then a collapse in the global economy could happen and quickly!

Below are just some of Silicon Wafer Real-World Uses

  • Autos - sensors etc.
  • Cameras CMOS
  • Diplays
  • Cell Phone Chips
  • Computer Chips

real world silicon wafer applications

 

Would you upgrade your current computer if it provided no increase in performance? Would companies update server farms if yesterday's technology is just as good? Would you pay ten times the amount for a computer or mobile device with new composite chips that may replace silicon chips? Probably not. This could rapidly slow computer upgrades and replacements and could conceivabally throw the world into a recession or worse. This potential tech correction would be larger than the dot.com bust of the early 2000s.

So what uses are so important that the world cannot live without it?

For starters your phone's microchips. Silicon Microchip

Your current vehicle's sensors.

The future Driverless vehicle sensors.

What do some wafers have JEIDA Flats while other silicon wafers have semiconductor or (SEMI) standard flats?