Abstract
We report the fabrication of Cu/ZnO Schottky diodes on flexible polyimide substrates that can retain high performance under substrate bending. The ZnO films are synthesized with an optimized low-cost electrodeposition technique on a thin copper (Cu) film adhered to a flexible Kapton substrate via a titanium (Ti) adhesion layer. The Cu/ZnO system constituted a Schottky diode that demonstrated rectification ratios of ∼106 and ideality factors of ∼2 to 3, which surpass the current state-of-the-art for solution-processed ZnO films.
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