{"id":5843,"date":"2018-07-12T09:06:00","date_gmt":"2018-07-12T09:06:00","guid":{"rendered":"https:\/\/www.portal.solar.com\/learn\/perovskite-and-silicon-solar-cell-efficiency-reaches-25-2\/"},"modified":"2022-12-07T18:44:29","modified_gmt":"2022-12-07T18:44:29","slug":"perovskite-and-silicon-solar-cell-efficiency-reaches-25-2","status":"publish","type":"post","link":"https:\/\/www.solar.com\/learn\/perovskite-and-silicon-solar-cell-efficiency-reaches-25-2\/","title":{"rendered":"Perovskite and Silicon Solar Cell Efficiency Reaches 25.2%"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">While around 90% of solar panels currently on the market are made out of silicon, adding a new material may soon make existing module design even more efficient.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Perovskites are a cheap class of materials that can easily be combined with silicon for more efficient electricity generation. Perovskite cells have come a long way since 2009 when they boasted an efficiency of just 3.8% for a few minutes. The most advanced perovskite cells \u201cnow boast an efficiency of 22.7% and routinely work for thousands of hours under harsh test conditions,\u201d according to<\/span><a href=\"https:\/\/cen.acs.org\/energy\/solar-power\/Perovskite-progress-pushes-tandem-solar\/96\/i24\" target=\"_blank\" rel=\"noopener noreferrer\"> <span style=\"font-weight: 400;\">recently published research<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The most recent breakthrough stems from a new method of combining the silicon-based and perovskite cells. Silicon-based cells have a surface made up of microscopic pyramids, which has historically made placing a homogeneous perovskite sheet on top difficult. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">According to Swiss Researcher Florent Sahli, \u201cUntil now, the standard approach for making a perovskite\/silicon tandem cell was to level off the pyramids of the silicon cell, which decreased its optical properties and therefore its performance, before depositing the perovskite cell on top of it. It also added steps to the manufacturing process.\u201d <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sahli and his team\u2019s new process uses evaporation technology to create an inorganic substance that surrounds the pyramids and allows for easier placement of the perovskite layer. While the technology is not yet commercially available, it is currently undergoing tests to increase efficiency as well as the long-term stability of the perovskite film.<\/span><\/p>\n<h2>Perovskite and Silicon Tandem Cells: A Perfect Pairing<\/h2>\n<p><span style=\"font-weight: 400;\">Like silicon solar cells, modules made solely out of perovskite are possible. However, researchers have begun focusing on \u201ctandem solar cells,\u201d which feature a thin layer of perovskite cells &#8211; about one micrometer thick &#8211; on top of a layer of silicon-based cells. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">While silicon is best at converting red and infrared light into electricity, perovskite is more efficient with green and blue lights. The resulting combination recently reached a record efficiency of 25.2%. However, researchers believe that efficiencies beyond 30% are possible in the near future.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><img style=\"width: 300px; display: block; margin: 0px auto;\" src=\"https:\/\/assets.solar.com\/wp-content\/uploads\/Perovskite-Silicon%20Tandem%20Cell.png\" alt=\"Perovskite-Silicon Tandem Cell\" width=\"300\" \/><\/span><\/p>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">(Pictured: Tandem Cell Model from<\/span><\/i><a href=\"https:\/\/pvlab.epfl.ch\/page-124775-en.html\" target=\"_blank\" rel=\"noopener noreferrer\"> <i><span style=\"font-weight: 400;\">source<\/span><\/i><\/a><i><span style=\"font-weight: 400;\">)<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">This new research comes at a critical moment for technology in the solar industry. Advancements are continuously being made to boost efficiency and reduce prices, but many believe that silicon solar cell technology is starting to flatline after decades of success. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">While challenging, the<\/span> <span style=\"font-weight: 400;\">widely recognized<\/span><span style=\"font-weight: 400;\"> theoretical maximum efficiency for silicon-based solar cells is 29.4%. As researchers draw nearer to this limit, tandem solar cells offer the realistic possibility of exceeding this cap. According to the Swiss <\/span><a href=\"https:\/\/www.sciencedaily.com\/releases\/2018\/06\/180611133535.htm\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"font-weight: 400;\">research team<\/span><\/a><span style=\"font-weight: 400;\">, integrating perovskite cells on top of silicon-based cells \u201cwould only add a few extra steps to the current silicon-cell production process, and the cost would be reasonable.\u201d <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Better yet, the materials needed to create perovskite cells are relatively abundant. Tandem solar cells and their potential hold certainly offer a lot to get excited about!<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Should you wait for tandem cells to go solar?<\/span><\/h2>\n<p>Although the potential for perovskite-silicon cells are great, consider going solar soon to maximize your savings on your electricity costs. It will likely still be a few years before tandem cells are commercially available at a wide scale.<\/p>\n<p>What&#8217;s more, unless you have extremely limited roof space to place solar panels, the efficiency of standard solar panels are already at a high enough level to cost-effectively install an array.<\/p>\n<p>To learn more about your home on solar, <a href=\"https:\/\/www.solar.com\/calculator\">use our calculator<\/a> to get an instant snapshot of what solar would look like for your home.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>While around 90% of solar panels currently on the market are made out of silicon, adding a new material may soon make existing module design even more efficient. Perovskites are&#8230;<\/p>\n","protected":false},"author":43,"featured_media":6022,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":""},"categories":[70],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.5 (Yoast SEO v19.10) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Perovskite and Silicon Solar Cell Efficiency Reaches 25.2% | Solar.com<\/title>\n<meta name=\"description\" content=\"Advancements are continuously being made to boost solar panels efficiency and reduce prices, but many believe that silicon solar cell technology is starting to flatline after decades of success.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.solar.com\/learn\/perovskite-and-silicon-solar-cell-efficiency-reaches-25-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Perovskite and Silicon Solar Cell Efficiency Reaches 25.2%\" \/>\n<meta property=\"og:description\" content=\"Advancements are continuously being made to boost solar panels efficiency and reduce prices, but many believe that silicon solar cell technology is starting to flatline after decades of success.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.solar.com\/learn\/perovskite-and-silicon-solar-cell-efficiency-reaches-25-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Solar.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Solar.comOfficial\/\" \/>\n<meta property=\"article:published_time\" content=\"2018-07-12T09:06:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-12-07T18:44:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/s3.amazonaws.com\/solarassets\/wp-content\/uploads\/2019\/06\/pkms-panel-produce-blog.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"870\" \/>\n\t<meta property=\"og:image:height\" content=\"450\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Siena Hacker\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Siena Hacker\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.solar.com\/learn\/perovskite-and-silicon-solar-cell-efficiency-reaches-25-2\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.solar.com\/learn\/perovskite-and-silicon-solar-cell-efficiency-reaches-25-2\/\"},\"author\":{\"name\":\"Siena Hacker\",\"@id\":\"https:\/\/www.solar.com\/learn\/#\/schema\/person\/d1896a8a917f79932e3155dba66a83cc\"},\"headline\":\"Perovskite and Silicon Solar Cell Efficiency Reaches 25.2%\",\"datePublished\":\"2018-07-12T09:06:00+00:00\",\"dateModified\":\"2022-12-07T18:44:29+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.solar.com\/learn\/perovskite-and-silicon-solar-cell-efficiency-reaches-25-2\/\"},\"wordCount\":578,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.solar.com\/learn\/#organization\"},\"articleSection\":[\"Solar Panel Efficiency - 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