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A team of researchers has successfully developed a glass-like silicon solar cell capable of charging smartphones through their screens
Innovation in the field of solar energy through solar cells is evolving rapidly, and one of the most promising developments is the development of transparent solar cells. These cells offer a unique opportunity to integrate electricity production PV on a variety of surfaces, such as smartphones, for example.
Recently, a team of researchers from School of Energy and Chemical Engineering, Ulsan National University of Science and Technology (UNIST), in South Korea has unveiled a remarkable breakthrough: a transparent solar cell capable of charging smartphones directly through their screens.
The transparent solar cell revolution
Traditional solar panels, which use monocrystalline silicon, remain the standard in the photovoltaic industry due to their proven efficiency.
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However, research in recent years has explored new technologies and materials to further improve the use of solar energy. Among these technologies, transparent solar cells are emerging as a revolutionary option.
They promise to expand the use of solar energy beyond rooftops and terraces, allowing surfaces such as windows and mobile device screens to also generate electricity.
The transparent solar cell developed by the UNIST team is a major breakthrough in this field. Published in the scientific journal Proceedings of the National Academy of Sciences (PNAS), this innovation uses a new approach called technology all-back-contact (A B C).
In this technique, all the cell components are installed on the back, eliminating the need for opaque metal wires that normally compromise transparency. This makes the cell virtually indistinguishable from a regular sheet of glass, allowing it to be applied to a wide range of products and surfaces.
Excellence in efficiency and design
Tests carried out by UNIST scientists with the new transparent photovoltaic module, which measures 16 cm², indicated an energy conversion efficiency of approximately 15,8%. In addition, the transmittance – the ability of light to pass through material – was 20%, a significant value for a transparent material.
This combination of high efficiency and excellent transmittance makes this solar cell a promising candidate for a variety of practical applications.
The most impressive thing is that the researchers were able to use this module to charge a smartphone battery. This shows that the technology can be integrated into mobile device screens, transforming them into power sources.
Imagine a future where your phone automatically charges while you use it outdoors, simply by taking advantage of the ambient light!
Applications in various sectors
The possibilities offered by transparent solar cells are vast. In addition to smartphone screens, UNIST researchers suggest that this technology could be applied in several other areas.
For example, transparent silicon cells could replace glass in vehicles, creating cars that generate solar electricity while parked or in motion.
Likewise, they can be integrated into building windows, allowing large skyscrapers to become sources of sustainable energy without compromising architectural design.
Another possible application is in small household appliances, such as watches and home automation devices, where transparent screens with power generation capabilities could eliminate the need for batteries or constant charging.
Professor Kangmin Lee, one of the research leaders, highlighted that this innovation could have a significant impact on sectors such as automotive, construction and consumer electronics.
The path to commercialization
Although it is still in the research phase, this transparent solar cell technology has already opened doors for its future commercialization.
According to Professor Seo, also involved in the project, his team is committed to continuing to develop the modularization of these cells, making them more accessible and ready for large-scale use.
These transparent solar cells are expected to become an essential part of the energy industry in the coming years, contributing to the generation of green energy in a variety of applications.
In summary, the transparent solar cell developed by UNIST represents a major advance in the field of photovoltaics.
With its ability to charge mobile devices and potential for application in various sectors, this innovation could transform the way we interact with solar energy, making it more accessible and integrated into our daily lives.
