Is germanium a good conductor of heat?
Pure silicon and germanium are poor conductors of electricity because their outer electrons are tied up in the covalent bonds of the diamondlike framework. These atoms are larger and hold their electrons less tightly. They are not conductors in the metallic sense of the word, but are semiconductors.
Is germanium and insulator?
Is germanium a conductor or an insulator? Answer: germenium is a semi conductor. it exist in a sort of limbo between conductors and insulators .
What is germanium conductivity?
Thermal conductivity. 60.2 W/(m⋅K)
Which has more conductivity silicon or germanium?
Each has four valence electrons, but germanium will at a given temperature have more free electrons and a higher conductivity. Silicon is by far the more widely used semiconductor for electronics, partly because it can be used at much higher temperatures than germanium.
Why is Si preferred over Ge?
Why is silicon usually preferred to germanium in the manufacture of semiconductor devices? Silicon is abundant on the earth’s surface and therefore cheaper than germanium. The PIV (Peak Inverse Voltage) rating of silicon is much higher than germanium and therefore can withstand much higher temperatures than germanium.
Why barrier potential of silicon is more than germanium?
For germanium the electrons are farther away for their nucleus and their energy is higher and need less energy to remove an electron. So the barrier potential for silicon is high ( 1.1V) compared to germanium (0.7V).
How does band gap change with temperature?
As temperature increases, the band gap energy decreases because the crystal lattice expands and the interatomic bonds are weakened. Weaker bonds means less energy is needed to break a bond and get an electron in the conduction band.
What is band gap of germanium?
Semiconductors
| Material | band gap type | bandgap wavelength |
|---|---|---|
| germanium (Ge) | indirect | 1.84 μm |
| gallium antimonide (GaSb) | direct | 1.70 μm |
| silicon (Si) | indirect | 1.1 μm |
| indium phosphide | direct | 915 nm |
What is P type material?
A p-type semiconductor is an extrinsic type of semiconductor. A p-type semiconductor has more holes than electrons. This allows the current to flow along the material from hole to hole but only in one direction. Semiconductors are most often made from silicon.