{"id":4022,"date":"2011-04-15T10:22:29","date_gmt":"2011-04-15T14:22:29","guid":{"rendered":"http:\/\/sciencebusiness.technewslit.com\/?p=4022"},"modified":"2011-04-15T10:23:58","modified_gmt":"2011-04-15T14:23:58","slug":"chlorine-found-to-boost-flat-panel-display-technology","status":"publish","type":"post","link":"https:\/\/technewslit.com\/sciencebusiness\/?p=4022","title":{"rendered":"Chlorine Found to Boost Flat Panel Display Technology"},"content":{"rendered":"
\"L<\/a>
L to R: Zhibin Wang, Zheng-Hong Lu, and Michael Helander hold their chlorine-enabled OLED devices (Univ. of Toronto)<\/figcaption><\/figure>\n

Materials scientists at University of Toronto<\/a> in Canada have found a simple way to use chlorine to reduce the complexity of Organic Light-Emitting Diode (OLED) devices and improve their efficiency. The faculty\/student team published their findings in this week’s issue of the journal Science<\/em><\/a> (paid subscription required).<\/p>\n

OLEDs<\/a> are used in a wide variety of devices, such as flat-panel display televisions, and for room lighting. They consist of a series of organic thin films between two conductors, which when electrical current is applied, emits a a bright light.<\/p>\n

Toronto Ph.D. candidates Michael Helander and Zhibin Wang, with materials science and engineering professor Zheng-Hong Lu, devised a method of adding a one-atom thick film of chlorine to the surface of indium tin oxide, a standard electrode material found in today\u2019s flat-panel displays. By adding the chlorine layer, the researchers created a medium that makes the electrical current through the OLED more efficient, eliminating the need for several layers required in traditional OLED devices.<\/p>\n

While chlorine is a commonly used element in swimming pools and drinking water, chlorine gas itself has long been considered a dangerous substance<\/a>; as far back as World War I, it was used as a chemical warfare agent. The Toronto team’s process, adds chlorine without resorting to its gaseous form. “We developed a UV [ultraviolet] light-assisted process to achieve chlorination,” says Helander, “which negates the need for chlorine gas, making the entire procedure safe and reliable.”<\/p>\n

With traditional OLEDS, device makers need to trade-off brightness for efficiency; as brightness increases, efficiency declines. The Toronto researchers, however, found the efficiency of their chlorinated green-emitting OLEDs more than doubled at very high brightness.<\/p>\n

Reducing the complexity of OLEDs — removing the need for multiple film layers — can also simplify manufacturing processes, which can lead to lower production costs. “This effectively lowers barriers for mass production,” says Zheng-Hong Lu, “and thereby accelerates the adoption of OLED devices into mainstream flat-panel displays and other lighting technologies.”<\/p>\n

Read more: Researchers Improve Efficiency of LED Lighting<\/a><\/p>\n

*\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 *<\/p>\n","protected":false},"excerpt":{"rendered":"

Materials scientists at University of Toronto in Canada have found a simple way to use chlorine to reduce the complexity of Organic Light-Emitting Diode (OLED) devices and improve their efficiency. The faculty\/student team published their findings in this week’s issue of the journal Science (paid subscription required). OLEDs are used in a wide variety of […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[56,96,86,43,105,26],"class_list":["post-4022","post","type-post","status-publish","format-standard","hentry","category-products","tag-canada","tag-chemistry","tag-engineering","tag-materials-science","tag-physical-sciences","tag-university"],"_links":{"self":[{"href":"https:\/\/technewslit.com\/sciencebusiness\/index.php?rest_route=\/wp\/v2\/posts\/4022","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/technewslit.com\/sciencebusiness\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/technewslit.com\/sciencebusiness\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/technewslit.com\/sciencebusiness\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/technewslit.com\/sciencebusiness\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4022"}],"version-history":[{"count":5,"href":"https:\/\/technewslit.com\/sciencebusiness\/index.php?rest_route=\/wp\/v2\/posts\/4022\/revisions"}],"predecessor-version":[{"id":4027,"href":"https:\/\/technewslit.com\/sciencebusiness\/index.php?rest_route=\/wp\/v2\/posts\/4022\/revisions\/4027"}],"wp:attachment":[{"href":"https:\/\/technewslit.com\/sciencebusiness\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/technewslit.com\/sciencebusiness\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/technewslit.com\/sciencebusiness\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}