Fig. 3
From: Voltage-gated optics and plasmonics enabled by solid-state proton pumping
Electrochemical switchable color from solid-state thin films. a Schematic illustration of interference color-switching device. When a VG > 0 is applied, water from the ambient is dissociated and the protons move towards the bottom electrode and incorporate into GdOx film. b Schematic illustration of interference color-switching device with a crossbar structure. c Optical image of a typical device as fabricated. Probes are landed on the top and bottom electrode. d Optical images of a device with 270 nm SiO2 before and after voltage application in ambient. e Simulated reflected color of the device as a function of the refractive index of GdOx. f Optical images of devices and simulated colors with increasing SiO2 thickness from the left (110 nm) to the right (420 nm)
