For decades, silicon has been the undisputed king of solar energy. However, its dominance comes with significant drawbacks: its weight, fragility and expensive manufacturing process. Today, the world is on the verge of an energy revolution thanks to perovskites, materials that allow the creation of lightweight and flexible solar cells. The main obstacle to their mass adoption has been degradation under the influence of the external environment, but scientists from the University of Manchester have announced a solution to this problem.
Why traditional silicon is losing relevance
The silicon panels we see on rooftops require thick glass backings for protection. This makes them heavy and limits their applications. You can’t stick one on a window, a backpack, or the curved roof of an electric car. In addition, the production of silicon wafers requires temperatures of over 1,400°C, which consumes a tremendous amount of energy.
- High logistics costs due to the weight of the structures.
- Limited flexibility, which precludes integration into consumer electronics.
- Difficulty in disposal after end of life.
Perovskites as the future of photovoltaics
Perovskite is a type of crystalline structure that exhibits an incredible ability to absorb light. Unlike silicon, a perovskite layer can be 1,000 times thinner while maintaining high energy conversion efficiency. This allows solar cells to be printed on conventional industrial printers, similar to newspapers, which reduces the cost of production by several times. Currently, the cost of such elements is estimated at less than $0.10 per watt of power.
Solutions to the degradation problem from Manchester scientists
The main problem for researchers was the short service life of perovskite elements. Under the influence of sunlight and moisture, ions inside the crystal lattice began to move, which led to the destruction of the structure after just a few months. Researchers from the University of Manchester have developed a method of molecular stabilization.
They incorporated special organic molecules into the perovskite structure, which act as a “glue.” This component locks the ions in place, preventing degradation even at extreme temperatures of up to 85°C and high humidity. As a result, the prototypes retained more than 90% of their initial efficiency after thousands of hours of continuous operation.
Practical application and economic effect
New technology opens up markets that were previously closed to solar generation. For example, building-integrated photovoltaics (BIPV) will turn every skyscraper into an autonomous power plant. Flexible panels can be applied directly to windows and facades.
- Automotive industry: increasing the range of electric cars by 15-20% thanks to flexible roofs.
- Space technologies: light weight allows for the launch of huge area panels into orbit at minimal cost.
- Mobile gadgets: charging smartphones and watches from daylight directly through the case.
Environmental impact and sustainable development
Importantly, the new panels are significantly more environmentally friendly. Carbon emissions during their manufacture are 80% lower than those of silicon counterparts. This is critical to achieving climate neutrality goals. Due to the lack of the need for heavy metal frames, the disposal of such batteries becomes a much simpler and cheaper procedure.
Conclusions: When to wait in the market
While the technology has already proven its viability in the labs of the University of Manchester, the next step is to scale up production. It is expected that the first commercial samples of stabilized flexible panels will appear on the market within the next 2-3 years. This will mark the beginning of a new era where energy will be available anywhere and on any surface.
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