Ionic compounds are similar to covalent bonds, but differ in terms of how the electrons of the two atoms interact. Ionic compounds a formally defined as a grouping of atoms of more than one element connected through ionic bonds. In a covalent (molecular) bond, the electrons are shared, where...
Each covalent bond in the semiconductor, consists of two valence electrons contributed by two neighbouring atoms. When one of the valence electrons leaves the bond, the bond becomes incomplete. This incomplete bond has a strong tendency to complete itself by attracting an electron. The hole is the...
Hence, some of the valence electrons in the covalent bond will be excited and jump out from the bond leaving behind a hole in the bond. In this way electron-hole pairs are generated in the crystal due to incident light. The holes of these light generated electron-hole pairs in the n-...
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