Views:27 Author:Site Editor Publish Time: 2021-03-22 Origin:pv tech
In ACS Applied Materials & Interfaces, researchers at the National University of Information Technology, Mechanics and Optics (ITMO) in St. Petersburg Russia, reported on a way to make solar cells from transparent materials while maintaining their efficiency.
The new technology changed the properties of materials by adding impurities, eliminating the need for expensive special equipment to produce.
One of the most interesting challenges in solar energy field of is the development of transparent thin-film photosensitive materials. The film can be applied to the top of a common window to generate energy without affecting the appearance of the building. However, it is very difficult to develop solar cells that are both efficient and transparent.
"Ordinary thin-film solar cells have an opaque metal back contact that can capture more light," the researchers said. The transparent solar cell adopts a transparent back electrode. In this case, some photons will inevitably be lost as they pass through, degrading the performance of the device. "
In the study, the ITMO team used a technique that uses ionic liquids to dope materials, which can change the characteristics of the treatment layer, thus solving the efficiency problem.
The efficiency of the transparent solar cell was significantly improved in the test. The same technology could be used to improve the performance of other types of solar cells, the researchers believe. Now they plan to experiment with different materials and improve ionic liquid doping techniques.