Fig. 6: ITO-free solar cells based on the ZnO stack.
From: A Transparent Electrode Based on Solution-Processed ZnO for Organic Optoelectronic Devices
a Schematic device architecture for the ITO-free solar cells based on the ZnO stack acting as the cathode. b Light J-V curves, c dark current-voltage curves, and d EQE spectra of the PBDB-T:ITIC solar cells based on ITO and the ZnO stack with 6 layers of ZnO, annealed at 320°C. The solar cell based on ZnO is UV-treated (365 nm, 24 W, and 600 s), prior to characterizing its performance, and the solar cell based on ITO is not UV-treated. A comparison between the performance of the UV-treated solar cells based on ZnO and ITO is provided in Supplementary Fig. 6.
