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Physics

CAIE2016

The energy bands in a solid are illustrated in Fig. 11.1. conduction band forbidden band valence band Fig. 11.1 By considering charge carriers and lattice vibrations, use band theory to explain the change of resistance of an intrinsic semiconductor with change of temperature. .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... ..................................................................................................................................................... [6] [Total: 6] © UCLES 2014 9702/04/SP/16 PPMMTT

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