Researchers from the Australian National University have created a new world efficiency record for “tandem solar cells”, which stack two different types of solar modules on top of each other for a dramatic increase in performance.

Researchers believe that overlapping several types of solar cells to achieve higher yields could be on the verge of becoming commercially viable and common for years to come.

Research by an ANU team in Canberra began with a conventional silicon solar cell, which is commonly used in most solar panels currently on the market. In addition to the silicon wafer, the researchers succeeded in superimposing a solar cell made of perovskite, which is produced using organic and inorganic materials, rather than silicon wafers, to convert sunlight into electricity.

The two layers are able to absorb different parts of the light spectrum, maximize the amount of sunlight converted into electricity. By working together, the two layers can use more solar energy reaching the cells, as each works best with lights of different wavelengths.

Many silicon solar cells available on the market achieve a conversion efficiency of over 20%. By setting a new record of “stacked perovskite silicon mechanical tandem cells“The ANU research team was able to use the combined results of the two different layers to achieve a conversion efficiency of 27.7%, and they are aiming to exceed 30% for their next goal.

This means that solar panels could produce up to 50% more electricity using the same amount of sunlight, compared to solar panels currently available on the market.

Silicon solar cells currently dominate the market, but the efficiency of silicon solar cells will reach the limit in the next five to ten years.

Kylie Catchpole, professor at ANU.

This result demonstrates the potential of tandem solar cells. They can make better use of certain parts of the solar spectrum. This will lead to more efficient and cost effective solar cells and solar power sources.

The research team believes that this breakthrough will have a significant impact on the global solar energy market, and he expects the first commercially available “tandem” solar cells to hit the market in the next few years.

The International technology roadmap for photovoltaics predicted that “tandem solar cells will appear in large-scale production in 2023, so we are very closeSays lead researcher Dr The Duong.

This new efficiency will help improve the commercial competitiveness of this technology. It’s exciting to think that a new technology that has the potential to benefit the entire planet is being developed here in Canberra.

The research team will now focus on improving the efficiency of tandem solar cells, as well as on improve material stability to make sure they’re right for your business deployment.

Although Australia hardly manufactures solar modules, it has long been a leader in global solar research, which has brought solar power to the point of being one of the cheapest forms of new power generation capacity in the world.

More information: onlinelibrary.wiley.comcecs.anu.edu.au