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. Author manuscript; available in PMC: 2018 Jun 11.
Published in final edited form as: Nat Nanotechnol. 2017 Dec 11;13(2):159–164. doi: 10.1038/s41565-017-0017-7

Figure 4. Electro-photo-chemistry in nanoscale tunnel junctions.

Figure 4

a, Changes of the emission intensity from the device during 10-min period for different test biases without external illumination, plotted from Supplementary Fig. 10. b, Changes of the emission intensity from the device during 10-min period under various external illumination conditions without applied bias, plotted from Supplementary Fig. 11. Inset, experimental dispersion of extinction of the metamaterial for TM-polarized illumination. c, Schematics of the mechanism for the chemical reactions in the reactive tunnel junction. d, Tunnelling current (red hollow squares) and emission power (blue hollow circles) measured when the cell atmosphere was cycled betweent air and N2 with 2% H2 under Vb = 2.5 V bias.