TVNG based on traditional semiconductor materials. (A)‒(C) Schematic diagram of metal/silicon point contact system structure. Adapted with permission from Ref. [38], Copyright©2019, Elsevier. (D)‒(F) Schematic diagram of interface diagram of DI water and Si crystal. Adapted with permission from Ref. [31]. Copyright©2021, Elsevier. (G)‒(I) Schematic diagram of metal-oxide-semiconductor interface. Adapted with permission from Ref. [39]. Copyright©2019, American Chemical Society. (J)‒(L) Schematic diagram of nGaN and pSi interface. Adapted with permission from Ref. [40]. Copyright©2021, American Chemical Society.