Interpretation:
Change in electrical resistance with increase in temperature differs in semiconductor and metallic conductor has to be explained.
Concept Introduction:
Semiconductors are the substances that have electrical conductivity between conductors and insulators such as materials of silicon and germanium.
Valence band contains valence electrons of atom and these electrons jumps to conduction band when excited. Conduction band is the band of high energy and generally has no free electrons and is empty. Electrons get excited to this band and move freely and conduct electricity.
Metallic conductors are those that cause
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CHEM PRINCIPLES LL W/ACHIEVE ONE-SEM
- 8.97 The doping of semiconductors can be done with enough precision to tune the size of the band gap in the material. Generally, in order to have a larger band gap, the dopant should be smaller than the main material. If you are a materials engineer and need a semiconductor that has lower conductivity thin pure silicon, what clement or elements could you use as your dopant? (You do not want either an n- or a p- type material) Explain your reasoning.arrow_forwardDiscuss the dependence of strength on temperature for metals, ceramics and polymers from the perspective of inter-atomic bonding.arrow_forwardDefine unit cellarrow_forward
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