Harnessing light with hemispherical shells to improve photovoltaics

In the search for sustainable energy solutions, the search for more efficient solar cells is essential. Organic photovoltaic cells have emerged as a promising alternative to traditional silicon-based counterparts due to their flexibility and cost-effectiveness. However, optimizing their performance remains a major challenge.

In a pioneering move, new research from Abdullah Gül University (Turkey) reinvents the structure of organic photovoltaic cells, opting for a hemispherical shell shape to unlock unprecedented potential in light absorption and coverage angular.

As indicated in the Journal of Photonics for Energy, this innovative configuration aims to maximize light absorption and angular coverage, promising to redefine the landscape of renewable energy technologies. The study presents advanced computational analysis and comparative benchmarks to highlight the remarkable capabilities of this new design.

In the study, Professor Dooyoung Hah of Abdullah Gül University probes the absorption spectra within the hemispherical shell-shaped active layer, providing a detailed examination of how light interacts with the structure and materials of the cell using a computer technique known as three-dimensional finite elements. analysis (FEA).

FEA can help solve complex engineering problems by dividing structures into smaller, more manageable parts called finite elements, allowing the behavior of the entire structure under various conditions to be simulated and analyzed. , such as different wavelengths of light and angles of incidence.

The reported FEA results are remarkable. When subjected to transverse electrically polarized (TE) light, the hemispherical shell structure exhibits a remarkable 66% increase in light absorption compared to flat structure devices. Similarly, for transverse magnetic (TM) polarized light, a notable improvement of 36% was observed.

Unlike previously reported semi-cylindrical shell designs, the hemispherical shell structure clearly stood out. It showed a significant 13% increase in light absorption for TE polarization and an impressive 21% improvement for TM polarization.

A bright future: illuminating diverse applications

Beyond its exceptional absorption capabilities, the hemispherical shell structure provides extensive angular coverage, up to 81 degrees for TE polarization and 82 degrees for TM polarization. This adaptability is particularly advantageous for applications requiring flexible light capture, such as portable electronics.

Hah said: “With the enhanced absorption and omnidirectionality characteristics, the proposed hemispherical shell-shaped active layers will be beneficial in various application fields of organic solar cells, such as biomedical devices, as well as in applications such as such as energy production windows and greenhouses, Internet of Things, etc.

The hemispherical shell shape marks a significant advancement in organic solar cell design. By harnessing the power of finite element analysis and innovative structural engineering, the reported research helps pave the way to a brighter, more sustainable future powered by renewable energy.