Layers and Surfaces for Photovoltaics and Sensors

New concept for efficient and cost-saving solar cells

The Nano-SIS team has developed a highly efficient solar cell system for large-scale and cost-effective solar cell production by using a sputtering process. The technology is based on a new and patented cell design with nanostructured silicon interfaces.

The interdisciplinary research group »Nano-SIS« is part of the Institute of Applied Physics at Friedrich Schiller University Jena. The goal of this project is the creation of a highly efficient solar cell concept by employing nanostructured »black silicon« at low production costs using SIS systems for cell fabrication.

To achieve a nanostructured surface, we use an inductively coupled plasma (ICP) etching process. The gas mixture during the process leads to high transparency and a specific resistivity.

A promising approach for rapid, simple and low cost fabrication of solar cells is the so called semiconductor - insulator - semiconductor (SIS) system. Here, a thin insulator is coated on doped silicon, followed by the deposition of a transparent conductive oxide (TCO).