Question
Elemental semiconductor and compound semiconductors. Explain with examples.

Answer

Following are the examples of elemental semiconductor and compound semiconductor :
(i) Elemental semiconductors : Si and Ge
(ii) Compound semiconductors :
• Inorganic : CdS, GaAs, CdSe, InP etc.
• Organic anthracenes, doped phthalocyanates etc.
• Organic polymers : polypyrrole, polyaniline, polythiophene etc.

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