Perovskite solar cells show tremendous promise in propelling solar power into the marketplace.
The cells use a hole-transportation layer, which promotes the efficient movement of electrical current after exposure to sunlight. However, manufacturing the hole-transportation organic materials is very costly and lack long term stability. Publishing in Science, a team of scientists in China, led by Professor Hongwei Han in cooperation with Professor Michael Grätzel at EPFL, have developed a perovskite solar cell that does not use a hole-transporting layer, with 12.8% conversion efficiency and over 1000 hours stability under full sunlight in ambient temperature. The innovation can reduce the cost of perovskite cells, and firmly propel them into the marketplace.
Hybrid organic–inorganic methylammonium lead halide perovskites have attracted intense attention for thin-film photovoltaics, due to their large absorption coefficient, high charge carrier mobility and long diffusion length. However, these cells are also costly because of the hole-transportation layer, which demands high purity materials and complicated fabrication procedures.
A team of scientists at the Michael Grätzel Center for Mesoscopic Cells of Huazhong University in China in cooperation with the Laboratory for Photonics and Interfaces at EPFL directed by Michael Grätzel have successfully manufactured a perovskite solar cell that does not need a hole-transportation layer. The solar cell shows comparative energy conversion efficiency (12.8%) and was shown to be stable for over 1000 hours in direct sun exposure.
The Latest on: Perovskite solar cell
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The Latest on: Perovskite solar cell
- Thermodynamic model to build more-stable perovskite solar cellson May 17, 2021 at 12:38 am
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Tin perovskites have emerged as promising alternatives to toxic lead perovskite in next-generation photovoltaics, but the poor environmental stability remains an obstacle for the application. Here, ...
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In a relatively short space of time, perovskite solar cells have become a highly promising candidate when it comes to how we might generate electricity in the future, but there are some design ...
- EGEB: A ‘molecular glue’ discovery makes perovskite solar cells more durableon May 7, 2021 at 7:26 am
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- 'Molecular glue' makes perovskite solar cells dramatically more reliable over timeon May 6, 2021 at 3:40 pm
In a study that could help to bring inexpensive, efficient perovskite solar cells one step closer to commercial use, researchers found a way to strengthen a key weak point in the cells' internal ...
- “Molecular Glue” Boosts Efficiency and Makes Perovskite Solar Cells Dramatically More Reliable Over Timeon May 6, 2021 at 11:00 am
A research team from Brown University has made a major step toward improving the long-term reliability of perovskite solar cells, an emerging clean energy technology. In a study to be published on ...
- 'Molecular glue' makes perovskite solar cells dramatically more reliable over timeon May 5, 2021 at 5:00 pm
Testing of solar cell function showed that the SAMs dramatically increased the functional life of the perovskite cells. Non-SAM cells prepared for the study retained 80% of its initial efficiency ...
- Closing in on state-of-the-art semiconductor solar cellson May 4, 2021 at 9:35 am
A synthetic approach that improves absorber layers in perovskite solar cells could help them achieve their full potential and draw closer to the performance of leading gallium arsenide devices.
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