Figure 5

(a,b) Schematics of electrical characterization of W/GaN epitaxial film and W/GaN NRs diodes, respectively. I-V characteristics for W/GaN epitaxial film diode and W/GaN NRs array diodes are presented in (c).
(a,b) Schematics of electrical characterization of W/GaN epitaxial film and W/GaN NRs diodes, respectively. I-V characteristics for W/GaN epitaxial film diode and W/GaN NRs array diodes are presented in (c).