New technology designed to improve the efficiency of solar cells

05 november 2013

The new method is a broadband light capture thin films - much more efficient compared to other methods, increasing absorption and energy production. As described in the research paper presented at York University in the journal Nature Communications, the method based on the use of quasicrystals, which have advantages over other materials in their ability to capture a larger portion of the solar spectrum. However, to date the use of quasicrystals in specific applications caused some difficulties, mainly due to the characteristic of symmetry and lack of regular diffraction grating.

In order to adapt to the seizure of quasicrystals sunlight, researchers have created a new structure, called quasi-random pattern - it combines a rich spectrum of spatial frequencies related to quasicrystals with a high level of control provided by periodic structures.

Researcher Emiliano Martins School of Physics and Astronomy from the University of St. Andrews, explains the importance of the work: "Managing propagation of light rays in the material is an important aspect in photonics. We have demonstrated that through careful study of their Fourier spectra, quasi-random nanostructures capable of such management with greater efficiency. "

At the same time, Dr. Li Juntao of the State Laboratory of Optoelectronic Materials and Technology of China Sun Yat-sen University, also took part in the development of quasi-random structures, argues that they can get a spread in many areas where it is used capture light rays from production LEDs to manufacturing DFB lasers.
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