Invented photocells that adapt to different levels of lighting
A team of researchers presented a technology for making translucent solar cells that can adapt to changing lighting conditions to improve energy conversion efficiency.
Traditional solar cells have a stable optical transmittance, so they are either transparent or have high performance. However, when integrating panels into buildings, they must adapt to the light intensity..
Scientists from the University of Grenoble and the Pablo de Olavide University were able to combine these characteristics using sensitive photochromic dyes, which change their structure and color under the influence of light. When dyes are added to photocells, they also acquire the same properties..
Although, due to their characteristics, they do not have the highest efficiency, they do offer the ability to customize the bandwidth. This feature will allow you to control the lighting level and temperature in buildings with large windows or glass facades. When the sun is shining brightly, the panels get darker, generating more electricity and letting in less light from outside, and vice versa..
The changes are automatic, and depending on the radiation intensity, the transparency varies from 60% to 27% with an average conversion efficiency of 4.2%. In the future, scientists will work to improve the performance of solar panels with a dye, increase the rate of dye adaptation and stability..
Recall that recently Australian researchers have developed a transparent material that turns any surface into a solar panel..
text: Ilya Bauer, photo: Tech Xplore