{"id":15115,"date":"2022-05-11T13:44:19","date_gmt":"2022-05-11T11:44:19","guid":{"rendered":"https:\/\/ggba.swiss\/epfl-valais-develops-a-solution-to-improve-perovskite-solar-cell-scalability\/"},"modified":"2023-07-04T13:40:34","modified_gmt":"2023-07-04T11:40:34","slug":"epfl-valais-develops-a-solution-to-improve-perovskite-solar-cell-scalability","status":"publish","type":"post","link":"https:\/\/ggba.swiss\/en\/epfl-valais-develops-a-solution-to-improve-perovskite-solar-cell-scalability\/","title":{"rendered":"EPFL Valais unveils a solution to improve perovskite solar cell scalability"},"content":{"rendered":"\n

Scientists at EPFL Valais Wallis<\/a> have found a way to overcome the scaling up problems of perovskites. They have developed an easy solvothermal method that can produce single-crystalline titanium dioxide rhombohedral nanoparticles that can be used to build a perovskite film.<\/p>\n

Perovskites are hybrid materials made from metal halides and organic compounds. They have attracted a lot of interest in the field of solar energy because of their light-harvesting capacities combined with a low cost of manufacturing, making them prime candidates for overtake the market from their silicon counterparts. Perovskites also show great potential in a range of applications that include LED lights, lasers, and photodetectors.<\/p>\n

One of the obstacles on the way to commercializing perovskite solar cells is that scaling them up results to losses in power-conversion efficiency and operational stability. This is due to natural defects in the perovskite molecular structure, which interferes with the flow of electrons. This results in \u201cresistive loss\u201d \u2013 a power loss due to resistance. In addition, the processes required to achieve high-quality large-area perovskite films are quite complex.<\/p>\n

The EPFL Valais Wallis’ scientists\u2019 new structure features a lower amount of \u201clattice\u201d mismatches, referring to the \u201cladder-like\u201d structure of the titanium dioxide nanoparticles. This translates into a lower number of defects, which ensures better electron flow throughout with lower power loss.<\/p>\n

The highest efficiency modules with the lowest loss when scaling up<\/h4>\n

Testing the new nanoparticle-based, small-size solar cells, the scientists achieved a power-conversion efficiency of 24.05% and a fill factor (a measure of actual obtainable power) of 84.7%. The cells also maintain about 90% of their initial performance after continuous operation for 1400 hours.<\/p>\n

The scientists also fabricated large-area cells, which certified an efficiency of 22.72% with an active area of nearly 24 cm2, which represents the highest efficiency modules with the lowest loss in efficiency when scaling up.<\/p>\n","protected":false},"excerpt":{"rendered":"

Scientists at EPFL Valais Wallis have found a way to overcome power loss and the manufacturing complexity of scaling up perovskite solar cells.<\/p>\n","protected":false},"author":3,"featured_media":15116,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"mc4wp_mailchimp_campaign":[],"footnotes":""},"categories":[853],"tags":[936,904,899],"class_list":["post-15115","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cleantech-en","tag-energy","tag-solar-energy","tag-sustainability"],"acf":[],"yoast_head":"\nEPFL Valais unveils a solution to improve perovskite solar cell scalability - Greater Geneva Bern area<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/staging.ggba.swiss\/en\/epfl-valais-develops-a-solution-to-improve-perovskite-solar-cell-scalability\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"EPFL Valais unveils a solution to improve perovskite solar cell scalability - 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