I have found the following diagram (unfortunately in german) about the range of conductivity of conductors (Leiter), semiconductors (Halbleiter) and insulators (Isolatoren).
How should one interpret the ranges of conductivity for a specific material?
Is it correct that for the semiconductors the range is because of the temperature dependence of conductivity? However the conductors are also temperature dependent (positive temperature coefficient) and should therefore also occupy a range.
Is it correct, that the ranges for the insulators is just because for example hard rubber is not an element and can have many different chemical implementations? Or is the conductivity of Insulators temperature dependent too?
So it would be nice, if someone could clarify those points, add a bit background and give me some orders of magnitude and perhaps references for this.
Because its in german I add some translations:
- The axis to the right is the specific electrical resistance.
- Fester Körper: solid
- Eisen: iron
- Bernstein: Amber
- Glimmer: mica
- Hartgummi: hard rubber
- Kupferoxid: Copper oxide
- Quecksilber: Mercury
- Silizium: Silicon
- Silber: Silver
- Selen: Selenium
- Germanium: Germanium
- Glas, Keramik: Glass and ceramics
- Quarz: Quartz