Skip to main content
. 2022 Mar 16;12(6):982. doi: 10.3390/nano12060982

Figure 1.

Figure 1

Schematics of H2 sensing mechanism for NiO sensor. Hole accumulation of the NiO sensor exposed in air (a) and hydrogen (b), respectively. Reprinted with permission from Ref. [37]. Copyright 2018 Elsevier.