A Flexible, High-Voltage (>100 V) Generating Device Based on Zebra-like Asymmetrical Photovoltaic Cascade.

The mutual conversion between light and electricity lies at the heart of optoelectronic and photonic applications. Maximization of the photoelectric conversion is a long-term goal which can be pursued via the fabrication of devices with ad-hoc architectures. In this framework it is of utter importance to harvest and transform light irradiation into high electric potential in specific area for driving functional dielectrics that respond to pure electric field. Here we have devised a nano-fabrication technology featuring double self-alignment and applied it to construct zebra-like asymmetric heterojunctions arrays. Such nanostructured composite, which cover a surface area of 5 × 4 mm 2 and contain 500 periodic repeating units, is capable to photo generate voltages as high as 140 V on a flexible substrate. This approach represents a leap over the traditional functionalization process based on simply embedding materials into devices, by demonstrating the disruptive potential of integrating oriented nanoscale device components into meta-material. This article is protected by copyright. All rights reserved.