{"id":517949,"date":"2022-11-29T17:30:04","date_gmt":"2022-11-29T14:30:04","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/researchers-realize-perovskite-based-phase-heterojunction-solar-cells\/"},"modified":"2022-11-29T17:30:04","modified_gmt":"2022-11-29T14:30:04","slug":"researchers-realize-perovskite-based-phase-heterojunction-solar-cells","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/researchers-realize-perovskite-based-phase-heterojunction-solar-cells\/","title":{"rendered":"#Researchers realize perovskite-based phase heterojunction solar cells"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a368df6352b0\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a368df6352b0\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/researchers-realize-perovskite-based-phase-heterojunction-solar-cells\/#%E2%80%9CResearchers_realize_perovskite-based_phase_heterojunction_solar_cells%E2%80%9D\" >&#8220;Researchers realize perovskite-based phase heterojunction solar cells&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CResearchers_realize_perovskite-based_phase_heterojunction_solar_cells%E2%80%9D\"><\/span>&#8220;Researchers realize perovskite-based phase heterojunction solar cells&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article__info-item mr-auto\">\n                                            <svg class=\"article__info-icon\"><use href=\"https:\/\/techx.b-cdn.net\/tmpl\/v2\/img\/svg\/sprite.svg#icon_clock\" x=\"0\" y=\"0\"\/><\/svg><\/p>\n<p class=\"text-uppercase text-low\">\n                                                November 29, 2022<br \/>\n                                                <span class=\"ml-2 badge a_editorial\">feature<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/researchers-realize-pe.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/researchers-realize-pe.jpg\" data-sub-html=\"Illustration of the phase heterojunction concept. \u00a9PIXELWG, J\u00f6rg Bandmann.\">\n<figure class=\"article-img\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/researchers-realize-pe.jpg\" alt=\"Researchers realize perovskite-based phase heterojunction solar cells  \" title=\"Illustration of the phase heterojunction concept. \u00a9PIXELWG, J\u00f6rg Bandmann.\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Illustration of the phase heterojunction concept. \u00a9PIXELWG, J\u00f6rg Bandmann.<br \/>\n            <\/figcaption><\/figure>\n<\/div>\n<\/div>\n<p>Over the past few decades, engineers and material scientists have created increasingly advanced and efficient solar technologies. Some of these technologies are based on photovoltaics with a so-called heterojunction structure, which entails the integration of two materials with distinct optoelectronic properties.<\/p>\n<p>                                                                                Researchers at Technische Universit\u00e4t Dresden have recently realized a different type of solar cells, referred to as phase heterojunction (PHJ) solar cells. These cells, introduced in a paper published in <i>Nature Energy<\/i>, were fabricated using two polymorphs (i.e., structural forms) of the same material, the perovskite CsPbI<sub>3<\/sub>, instead of two entirely different semiconductors.<\/p>\n<p>&#8220;The realization of a PHJ requires the ability to fabricate two different phases of the same perovskite composition on top of each other,&#8221; Yana Vaynzof, lead author of the paper, told TechXplore. &#8220;While the fabrication of \ud835\udefd-phase CsPbI<sub>3<\/sub> perovskite by solution-processing is well established in the literature, we needed to develop a method to deposit a \ud835\udefe-phase perovskite without dissolving the underlying \ud835\udefd-phase layer, so we decided to use thermal evaporation for this purpose.&#8221;<\/p>\n<p>In one of their <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1002\/aenm.202100299\">previous studies<\/a>, Vaynzof and her team devised a strategy to evaporate \ud835\udefe-phase CsPbI<sub>3<\/sub> perovskites by heating them. This strategy proved to be crucial for the experimental realization of their new PHJ solar cells.<\/p>\n<p>&#8220;PHJs exploit the fact that the specific arrangement of atoms\/molecules in crystalline materials (i.e., the material&#8217;s phase) may lead to the emergence of different properties,&#8221; Vaynzof explained. &#8220;This is indeed the case with \ud835\udefd and \ud835\udefe-phase CsPbI<sub>3<\/sub> perovskites, since \ud835\udefe phase results in a larger bandgap than the \ud835\udefd phase. Based on their different properties, interfacing the two phases in a heterojunction can be used to create a beneficial energetic landscape for the photogenerated charges in the photovoltaic device, and by doing so improve the photovoltaic performance.&#8221;<\/p>\n<p>To create their PHJ solar cell, Vaynzof and her students had to deposit the two material phases so that they were one on top of the other. This was achieved using a <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/watch-movies-tv-seriess\/\" data-internallinksmanager029f6b8e52c=\"8\" title=\"Watch Movies &amp; TV Series\" target=\"_blank\" rel=\"noopener\">series<\/a> of complementary deposition techniques.<\/p>\n<p>&#8220;We chose to deposit the bottom \ud835\udefd-phase by solution-processing, and the top \ud835\udefe-phase by thermal evaporation, which ensured the formation of a sharp interface between the two layers and is compatible with processing at relatively low temperatures,&#8221; Vaynzof said. &#8220;Ours is the first demonstration of the phase heterojunction as a novel concept for photovoltaics.&#8221;<\/p>\n<p>The recent work by this team of researchers could open interesting possibilities for the creation of new PHJ photovoltaic technologies, which differ significantly from those available today. As many semiconductor materials exhibit polymorphism (i.e., the ability to exist in different crystalline phases), the same method used to create this PHJ solar cell could be <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>lied to other perovskites and other semiconducting materials with different properties.<\/p>\n<p>In their next studies, Vaynzof and her team will continue working on innovative solar energy solutions. For instance, they now plan to develop strategies that would allow them to control the phases of perovskite materials, as this could enhance their PHJ solar cell design further.<\/p>\n<p>&#8220;These strategies will allow us to explore different phase heterojunction configurations for different perovskite compositions and integrate them into various photovoltaic device architectures,&#8221; Vaynzof added. &#8220;Importantly, we aim to utilize only thermal evaporation as the deposition method in order to enable the fabrication of multi-layered structures without the limitations that arise from the use of solvents in solution processing. Considering that thermal evaporation is a highly scalable, industrially relevant method, this will facilitate the future integration of phase heterojunction into industrial applications.&#8221;\n                                                                                                                            <\/p>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Ran Ji et al, Perovskite phase heterojunction solar cells, <i>Nature Energy<\/i> (2022).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1038\/s41560-022-01154-y\">DOI: 10.1038\/s41560-022-01154-y<\/a><br \/>\nZongbao Zhang et al, Efficient Thermally Evaporated \u03b3\u2010CsPbI 3 Perovskite Solar Cells, <i>Advanced Energy Materials<\/i> (2021).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1002\/aenm.202100299\">DOI: 10.1002\/aenm.202100299<\/a><\/p><\/div>\n<p class=\"article-main__note mt-4\">\n                                                \u00a9 2022 <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a> X Network<\/p>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                 <strong>Citation<\/strong>:<br \/>\n                                                 Researchers realize perovskite-based phase heterojunction solar cells (2022, November 29)<br \/>\n                                                 retrieved 29 November 2022<br \/>\n                                                 from https:\/\/techxplore.com\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2022-11-perovskite-based-phase-heterojunction-solar-cells.html<\/p>\n<p>                                            This document is subject to copyright. 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Over the past few decades, engineers and material scientists have created increasingly advanced and efficient solar technologies. Some of these technologies are based on photovoltaics with a so-called heterojunction structure, which entails the integration of&#8230;<\/p>\n","protected":false},"author":1,"featured_media":517950,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/researchers-realize-pe.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-517949","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/517949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=517949"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/517949\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/517950"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=517949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=517949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=517949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}