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. 2023 May 3;123(11):6891–6952. doi: 10.1021/acs.chemrev.3c00159

Figure 6.

Figure 6

Schematics for engineering the band structures of semiconductors. (a) An intrinsic semiconductor. (b) Doping-induced formation of shallow-level energy states in the bandgap. (c) Doping-induced formation of deep-level energy states in the bandgap. (d) Degenerate-doping-induced LSPR. The electronic band structures are shown on the top, and the corresponding optical absorption curves are displayed on the bottom. Reprinted with permission from ref (7). Copyright 2019 Royal Society of Chemistry.