Figure 5
From: Tandem-structured, hot electron based photovoltaic cell with double Schottky barriers
(a) Schematic and (b) SEM image of the TiO2/Au/TiO2 tandem cell showing the edge of the top TiO2 layer on the Au/TiO2 diode. (c) Plot of photocurrent density under light illumination measured on the thin film Au/TiO2, connected Au island/TiO2 diode and TiO2/Au/TiO2 tandem cell using a halogen–tungsten lamp (9 mW/cm2). (d) IPCE as a function of wavelength measured on the connected Au island/TiO2 diode (black line) and the TiO2/connected Au/TiO2 tandem cell (red line).
