{"id":516503,"date":"2022-11-26T19:10:05","date_gmt":"2022-11-26T16:10:05","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/building-a-900-pixel-imaging-sensor-using-an-atomically-thin-material\/"},"modified":"2022-11-26T19:10:05","modified_gmt":"2022-11-26T16:10:05","slug":"building-a-900-pixel-imaging-sensor-using-an-atomically-thin-material","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/building-a-900-pixel-imaging-sensor-using-an-atomically-thin-material\/","title":{"rendered":"#Building a 900-pixel imaging sensor using an atomically thin material"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 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-6a231b773e6e8\" 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-6a231b773e6e8\" 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\/building-a-900-pixel-imaging-sensor-using-an-atomically-thin-material\/#%E2%80%9CBuilding_a_900-pixel_imaging_sensor_using_an_atomically_thin_material%E2%80%9D\" >&#8220;Building a 900-pixel imaging sensor using an atomically thin material&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CBuilding_a_900-pixel_imaging_sensor_using_an_atomically_thin_material%E2%80%9D\"><\/span>&#8220;Building a 900-pixel imaging sensor using an atomically thin material&#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\/building-a-900-pixel-i.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/building-a-900-pixel-i.jpg\" data-sub-html=\"2D APS. a, 3D schematic (left) and optical image (right) of a monolayer MoS&lt;sub&gt;2&lt;\/sub&gt; phototransistor integrated with a programmable gate stack. The local back-gate stacks, comprising atomic layer deposition grown 50\u2009nm Al&lt;sub&gt;2&lt;\/sub&gt;O&lt;sub&gt;3&lt;\/sub&gt; on sputter-deposited Pt\/TiN, are patterned as islands on top of an Si\/SiO&lt;sub&gt;2&lt;\/sub&gt; substrate. The monolayer MoS&lt;sub&gt;2&lt;\/sub&gt; used in this study was grown via an MOCVD technique using carbon-free precursors at 900\u2009\u00b0C on an epitaxial sapphire substrate to ensure high film quality. Following the growth, the film was transferred onto the TiN\/Pt\/Al&lt;sub&gt;2&lt;\/sub&gt;O&lt;sub&gt;3&lt;\/sub&gt; back-gate islands and subsequently patterned, etched and contacted to fabricate phototransistors for the multipixel APS platform. b, Optical image of a 900-pixel 2D APS sensor fabricated in a crossbar architecture (left) and the corresponding circuit diagram showing the row and column select lines (right). Credit: &lt;i&gt;Nature Materials&lt;\/i&gt; (2022). DOI: 10.1038\/s41563-022-01398-9\">\n<figure class=\"article-img\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/building-a-900-pixel-i.jpg\" alt=\"Building a 900-pixel imaging sensor using an atomically thin material\" title=\"2D APS. a, 3D schematic (left) and optical image (right) of a monolayer MoS&lt;sub&gt;2&lt;\/sub&gt; phototransistor integrated with a programmable gate stack. The local back-gate stacks, comprising atomic layer deposition grown 50\u2009nm Al&lt;sub&gt;2&lt;\/sub&gt;O&lt;sub&gt;3&lt;\/sub&gt; on sputter-deposited Pt\/TiN, are patterned as islands on top of an Si\/SiO&lt;sub&gt;2&lt;\/sub&gt; substrate. The monolayer MoS&lt;sub&gt;2&lt;\/sub&gt; used in this study was grown via an MOCVD technique using carbon-free precursors at 900\u2009\u00b0C on an epitaxial sapphire substrate to ensure high film quality. Following the growth, the film was transferred onto the TiN\/Pt\/Al&lt;sub&gt;2&lt;\/sub&gt;O&lt;sub&gt;3&lt;\/sub&gt; back-gate islands and subsequently patterned, etched and contacted to fabricate phototransistors for the multipixel APS platform. b, Optical image of a 900-pixel 2D APS sensor fabricated in a crossbar architecture (left) and the corresponding circuit diagram showing the row and column select lines (right). Credit: &lt;i&gt;Nature Materials&lt;\/i&gt; (2022). DOI: 10.1038\/s41563-022-01398-9\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                2D APS. a, 3D schematic (left) and optical image (right) of a monolayer MoS<sub>2<\/sub> phototransistor integrated with a programmable gate stack. The local back-gate stacks, comprising atomic layer deposition grown 50\u2009nm Al<sub>2<\/sub>O<sub>3<\/sub> on sputter-deposited Pt\/TiN, are patterned as islands on top of an Si\/SiO<sub>2<\/sub> substrate. The monolayer MoS<sub>2<\/sub> used in this study was grown via an MOCVD technique using carbon-free precursors at 900\u2009\u00b0C on an epitaxial s<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>hire substrate to ensure high film quality. Following the growth, the film was transferred onto the TiN\/Pt\/Al<sub>2<\/sub>O<sub>3<\/sub> back-gate islands and subsequently patterned, etched and contacted to fabricate phototransistors for the multipixel APS platform. b, Optical image of a 900-pixel 2D APS sensor fabricated in a crossbar architecture (left) and the corresponding circuit diagram showing the row and column select lines (right). Credit: <i>Nature Materials<\/i> (2022). DOI: 10.1038\/s41563-022-01398-9<br \/>\n            <\/figcaption><\/figure>\n<\/div>\n<\/div>\n<p>A team of researchers at Penn State University has developed a 900-pixel imaging sensor using an atomically thin material. In their paper published in the journal <i>Nature Materials<\/i>, the group describes how they built their new sensor and possible uses for it.<\/p>\n<p>                                                                                Sensors that react to light have become very common in the modern world\u2014lights that turn on when the presence of an intruder is detected, for example. Such sensors are typically made of a grid of pixels, each of which are reactive to light. Performance of such sensors are based on measurements of responsivity, and which parts of light they detect. <\/p>\n<p>Most are designed with certain noise-to-signal constraints. In this new effort, the researchers noted that most such sensors are also very inefficient, using far more electricity than should be the case for such devices.<\/p>\n<p>To make a sensor that would be more efficient, the researchers looked at the materials that are used to make those now in use\u2014<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/general\/\" data-internallinksmanager029f6b8e52c=\"3\" title=\"General\" target=\"_blank\" rel=\"noopener\">general<\/a>ly a silicon complementary metal oxide semiconductor serves as the backbone. And it was the backbone where the researchers focused their effort. To make a sensor that would be more efficient, they replaced the traditional backbone with one made from molybdenum disulfide, a material that, like graphene, can be grown as a one atom thick sheet. <\/p>\n<p>In their work, they grew it on a sapphire base via vapor deposition. Then then lifted the finished product from the base and laid it on a base of silicon dioxide that had already been wire etched. They then finished their product by etching additional wiring on the top.<\/p>\n<p>The result of their work was a 30&#215;30 grid, where each of the pixels was its own device\u2014one that was not only capable of detecting light but could also be drained using an electrode that made it ready for use again after something has been sensed.<\/p>\n<p>In assessing the characteristics of their sensor, they found it to be far more efficient than those now in use, each pixel used less than a picojoule. They also found it very easy to reset. One shot of voltage across the array did the trick. On the other hand, the researchers found that it responded far slower to light than sensors currently in use. This, they note, suggests it could be used as an all-purpose light sensor, but not as fixture in a camera. They further suggest it could provide an ideal sensing solution in a wide variety of IoT applications.\n                                                                                                                            <\/p>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Akhil Dodda et al, Active pixel sensor matrix based on monolayer MoS2 phototransistor array, <i>Nature Materials<\/i> (2022).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1038\/s41563-022-01398-9\">DOI: 10.1038\/s41563-022-01398-9<\/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                                                 Building a 900-pixel imaging sensor using an atomically thin material (2022, November 26)<br \/>\n                                                 retrieved 26 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-pixel-imaging-sensor-atomically-thin.html<\/p>\n<p>                                            This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n                                            part may be reproduced without the written permission. The content is provided for information purposes only.<\/p><\/div>\n<\/p><\/div>\n<p><script id=\"facebook-jssdk\" async=\"\" src=\"https:\/\/connect.facebook.net\/en_US\/sdk.js\"><\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMLG0nwswvr63Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\">For forums sites go to <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/forum.buradabiliyorum.com\/\" target=\"_blank\" rel=\"noopener\">Forum.BuradaBiliyorum.Com<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/science\/\" target=\"_blank\" rel=\"noopener\">Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/techxplore.com\/news\/2022-11-pixel-imaging-sensor-atomically-thin.html\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Building a 900-pixel imaging sensor using an atomically thin material&#8221; 2D APS. a, 3D schematic (left) and optical image (right) of a monolayer MoS2 phototransistor integrated with a programmable gate stack. The local back-gate stacks, comprising atomic layer deposition grown 50\u2009nm Al2O3 on sputter-deposited Pt\/TiN, are patterned as islands on top of an Si\/SiO2 substrate&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":516504,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/building-a-900-pixel-i.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-516503","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\/516503","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=516503"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/516503\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/516504"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=516503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=516503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=516503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}