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<\/p>\nPerovskite solar cells promise cheaper and efficient solar energy, with enormous potential for commercialization. But even though they have been shown to achieve over 22% power-conversion efficiency, their operational stability still fails market requirements.<\/p>\n
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Despite a number of proposed solutions in fabrication technology, this issue has continued to undercut whatever incremental increases in efficiency have been achieved. EPFL scientists have now built a low-cost, ultra-stable perovskite solar cell that has operated for more than a year without loss in performance (11.2%). The work is published in Nature Communications.<\/p>\n
The lab of Mohammad Khaja Nazeeruddin at EPFL in collaboration with Michael Gratzel and Solaronix company has engineered what is known as 2D\/3D hybrid perovskite solar cell. This combines the enhanced stability of 2D perovskites with 3D forms, which efficiently absorb light across the entire visible spectrum and transport electrical charges.<\/p>\n
In this way, the scientists were able to fabricate of efficient and ultra-stable solar cells, which is a crucial step for upscaling to a commercial level. The 2D\/3D perovskite yields efficiencies of 12.9% (carbon-based architecture), and 14.6% (standard mesoporous solar cells).<\/p>\n
The scientists built 10×10 cm2 solar panels using a fully printable industrial-scale process. The resulting solar cells have now delivered a constant 11.2% efficiency for more than 10,000 hours, while showing zero loss in performance as measured under standard conditions.<\/p>\n
The breakthrough resolves the problem of perovskite solar-cell stability, and can viably move the technology into the commercial sphere.<\/p>\n
Source:\u00a0http:\/\/www.solardaily.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" Perovskite solar cells promise cheaper and efficient solar energy, with enormous potential for commercialization. But even though they have been shown to achieve over 22% power-conversion efficiency, their operational stability still fails market requirements. Despite a number of proposed solutions … Continue reading