Term: extrinsic semiconductor
https://doi.org/10.1351/goldbook.08820

Definition:
Semiconductor whose electric properties are largely determined by the dopant 'impurities' present.

Note: Phosphorus-doped silicon, i.e., silicon, in which some Si atoms are replaced with phosphorus atoms, or iodine doped poly(acetylene) are examples of extrinsic semiconductors.

Related Term: poly(acetylene) (http://doi.org/10.1351/goldbook.08882).

Source: PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 32 (https://doi.org/10.1515/pac-2020-0501)

Citation: 'extrinsic semiconductor' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08820

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