Team of researchers at Australian National University (ANU) have presented a new efficiency perovskite-silicon tandem solar cell record. According to experts, as tandem cells come close to 30% efficiency mark, ANU researchers are hoping it will help in improving the technology’s commercial competitiveness.
Perovskites have been on the verge of commercialization for several years, in addition several leading research institutes have taken interest in the capabilities of perovskites to enhance the efficiency, and low-cost productivity of the material.
Experts reveal by placing a perovskite solar cell on top of a silicon cell, it extracts more energy out of sunlight due to perovskites’ ability to react to various different wavelengths of light. On the other hand, silicon solar cells are made only from inorganic materials and can only absorb red light.
With respect to enhanced efficiency and stability, mixed dimensional perovskite solar cells combining 3D and 2D perovskites have caught a lot of attention. It is however unclear, which method of combining 3D and 2D perovskites is better. A study which reveal more on this subject is studied through the understanding of surface coating and bulk incorporation.
In the wake of the recent study, Professor Kylie Catchpole commented, “This result demonstrates the potential of tandem solar cells. They can make better use of certain parts of the solar spectrum – for example, high energy blue photons.”
“The International Technology Roadmap for Photovoltaics predicts tandem solar cells will appear in mass production in 2023, so we’re very close,” explained lead researcher Dr The Duong.