{"id":415599,"date":"2022-03-11T16:50:04","date_gmt":"2022-03-11T13:50:04","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/scientists-fabricate-novel-electrical-component-to-improve-stability-of-solar-cells\/"},"modified":"2022-03-11T16:50:04","modified_gmt":"2022-03-11T13:50:04","slug":"scientists-fabricate-novel-electrical-component-to-improve-stability-of-solar-cells","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/scientists-fabricate-novel-electrical-component-to-improve-stability-of-solar-cells\/","title":{"rendered":"#Scientists fabricate novel electrical component to improve stability of 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-6a3bbf4943897\" 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-6a3bbf4943897\" 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\/scientists-fabricate-novel-electrical-component-to-improve-stability-of-solar-cells\/#%E2%80%9CScientists_fabricate_novel_electrical_component_to_improve_stability_of_solar_cells%E2%80%9D\" >&#8220;Scientists fabricate novel electrical component to improve stability of solar cells&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CScientists_fabricate_novel_electrical_component_to_improve_stability_of_solar_cells%E2%80%9D\"><\/span>&#8220;Scientists fabricate novel electrical component to improve stability of solar cells&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/scientists-fabricate-n.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/scientists-fabricate-n.jpg\" data-sub-html=\"Graphical abstract. Credit: &lt;i&gt;ACS Applied Nano Materials&lt;\/i&gt; (2022). DOI: 10.1021\/acsanm.1c03355\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/scientists-fabricate-n.jpg\" alt=\"Scientists fabricate novel electrical component to improve stability of solar cells\" title=\"Graphical abstract. Credit: &lt;i&gt;ACS Applied Nano Materials&lt;\/i&gt; (2022). DOI: 10.1021\/acsanm.1c03355\" width=\"500\" height=\"254\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Graphical abstract. Credit: <i>ACS <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 Nano Materials<\/i> (2022). DOI: 10.1021\/acsanm.1c03355<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>In the future, decarbonized societies that use internet of things (IoT) devices will become commonplace. But to achieve this, we need to first realize highly efficient and stable sources of renewable energy. Solar cells are considered a promising option, but their electrical contacts suffer from a &#8220;tradeoff&#8221; relationship between surface passivation and conductivity. Recently, researchers from Japan have developed a new type of electrical contact that can overcome this problem.<\/p>\n<p>                                                                                The most recent type of commercial photovoltaic cell (solar cell) uses stacked layers of crystalline silicon (c-Si) and an ultrathin layer of silicon oxide (SiO<sub>x<\/sub>) to form an electrical contact. The SiO<sub>x<\/sub> is used as a &#8220;passivating&#8221; film\u2014an unreactive layer that improves the performance, reliability, and stability of the device. But that does not mean that simply increasing the thickness of this passivating layer will lead to improved solar cells. SiO<sub>x<\/sub> is an electrical insulator and there is a trade-off relationship between passivation and the conductivity of the electrical contact in solar cells.<\/p>\n<p>In a new study, published in <i>ACS Applied Nano Materials<\/i>, a research team led by Assistant Professor Kazuhiro Gotoh and Professor Noritaka Usami from Nagoya University has developed a novel SiO<sub>x<\/sub> layer that simultaneously allows high passivation and improved conductivity. Named NAnocrystalling Transport path in Ultrathin dielectrics for REinforcing passivating contact (NATURE contact), the new electrical contact consists of three-layer structures made up of a layer of silicon nanoparticles sandwiched between two layers of oxygen-rich SiO<sub>x<\/sub>. &#8220;You can think of a passivating film as a big wall with gates in it. In the NATURE contact, the big wall is the SiO<sub>x<\/sub> layer and the gates are Si nanocrystals,&#8221; explains Dr. Gotoh.<\/p>\n<p>The conductivity of the electrical contact in solar cells is dependent on the formation of a &#8220;carrier pathway&#8221; for the transport of electronic charges. The formation of this electrical pathway is dependent upon a high temperature treatment called &#8220;annealing.&#8221;<\/p>\n<p>Previous research has shown that SiO<sub>x<\/sub> contacts that contain silicon nanoparticles as a carrier pathway can achieve good electrical properties. In the NATURE contact, the annealing process leads to the formation of very small silicon nanocrystals in the passivation layer that are nearly spherical in shape. The diameter of these nanocrystals corresponds to the thickness of the passivation layer. Thus, by controlling the annealing conditions, the diameter and subsequent thickness of the passivation layer can be adjusted.<\/p>\n<p>The research team fabricated NATURE contacts and then subjected them to varying annealing conditions. Upon studying the contacts with transmission electron microscopy, they discovered that silicon nanocrystals were formed in the contact at an annealing temperature of 750 \u00b0C. They also investigated the electrical properties of the contact. They saw that compared to existing contacts such as the tunnel oxide passivating contact (TOPCon) or polysilicon on the oxide (POLO) contacts, the NATURE had comparable values of contact resistance and &#8220;recombination current,&#8221;\u2014a phenomenon that causes current and voltage losses in solar cells and decreases their efficiency.<\/p>\n<p>&#8220;The NATURE contact overcomes the trade-off relationship between the protective ability and conductivity of passivating films. This development will lead to the realization of future building-integrated photovoltaics (BIPV) and vehicle-integrated photovoltaics (VIPV) and help us achieve zero-energy buildings and solar cars in future decarbonized societies,&#8221; concludes Dr. Gotoh.\n                                                                                                                        <\/p>\n<hr\/>\n<div class=\"article-main__explore my-4 d-print-none\">\n<p>                                            <a rel=\"nofollow noopener\" target=\"_blank\" class=\"text-medium text-info mt-2 d-inline-block\" href=\"https:\/\/phys.org\/news\/2021-12-unravel-carrier-dynamics-silicon-oxide.html\">Researchers unravel charge carrier dynamics of silicon oxide tunneling junctions<\/a>\n                                        <\/div>\n<hr class=\"mb-4\"\/>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Ryohei Tsubata et al, Silicon Nanocrystals Embedded in Nanolayered Silicon Oxide for Crystalline Silicon Solar Cells, <i>ACS Applied Nano Materials<\/i> (2022).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"http:\/\/dx.doi.org\/10.1021\/acsanm.1c03355\">DOI: 10.1021\/acsanm.1c03355<\/a><\/p><\/div>\n<div class=\"d-inline-block text-medium my-4\">\n                                                Provided by<br \/>\n                                                                                                    Nagoya University<br \/>\n                                                                                                        <a rel=\"nofollow noopener\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/en.nagoya-u.ac.jp\/\"><br \/>\n                                                        <svg>\n                                                            <use href=\"https:\/\/techx.b-cdn.net\/tmpl\/v2\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/>\n                                                        <\/svg><br \/>\n                                                    <\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                 <strong>Citation<\/strong>:<br \/>\n                                                 Scientists fabricate novel electrical component to improve stability of solar cells (2022, March 11)<br \/>\n                                                 retrieved 13 March 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>\/2022-03-scientists-fabricate-electrical-component-stability.html<\/p>\n<p>                                            This document is subject to copyright. 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Credit: ACS Applied Nano Materials (2022). DOI: 10.1021\/acsanm.1c03355 In the future, decarbonized societies that use internet of things (IoT) devices will become commonplace. But to achieve this, we need to first realize highly efficient and stable sources of renewable energy. Solar cells&#8230;<\/p>\n","protected":false},"author":1,"featured_media":415600,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/scientists-fabricate-n.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-415599","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\/415599","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=415599"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/415599\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/415600"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=415599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=415599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=415599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}