{"id":18,"date":"2020-04-22T11:06:32","date_gmt":"2020-04-22T11:06:32","guid":{"rendered":"http:\/\/blog.wias-berlin.de\/nano-opto-electronics\/?p=18"},"modified":"2024-04-02T06:57:18","modified_gmt":"2024-04-02T06:57:18","slug":"hot-oleds-can-switch-back","status":"publish","type":"post","link":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/2020\/04\/22\/hot-oleds-can-switch-back\/","title":{"rendered":"Hot OLEDs can &#8220;switch back&#8221;"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/www.wias-berlin.de\/news\/2020\/SwitchedBack.png\" alt=\"OLED\" \/><figcaption>Luminance in a large-area OLED. Due to the interplay of current flow and self-heating, regions with negative differential resistance and &#8220;switched back&#8221; behavior are forming in the OLED (luminance decreases despite increasing supplied currents).<\/figcaption><\/figure>\n\n\n\n<p>Due to their fascinating properties, organic light-emitting diodes (OLEDs) are increasingly used in devices such as smartphone displays or television screens. Large-area OLEDs are also becoming increasingly interesting for new lighting concepts. For the design of such components, the non-linear effect of the self-heating of the materials as well as a resulting switch-back effect must be considered appropriately. Researchers from the TU Dresden and the Weierstrass Institute recently published a paper on <a href=\"https:\/\/www.nature.com\/articles\/s41377-019-0236-9&quot;\"><em>Experimental proof of Joule heating-induced switched-back regions in OLEDs<\/em><\/a> in the renowned scientific journal <em>nature research &#8211; Light: Science &amp; Applications<\/em> (2-year impact factor: 14.000, 5-year impact factor: 15.132).<\/p>\n\n\n\n<p>This work was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany\u2019s Excellence Strategy \u2013 The Berlin Mathematics Research Center MATH+ (EXC-2046\/1, project ID: 390685689).<\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.mathplus.de\" target=\"_blank\">www.mathplus.de<\/a><\/p>\n\n\n\n<p><a href=\"http:\/\/www.wias-berlin.de\/projects\/mathplus-AA2-1\/\">http:\/\/www.wias-berlin.de\/projects\/mathplus-AA2-1\/<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Due to their fascinating properties, organic light-emitting diodes (OLEDs) are increasingly used in devices such as smartphone displays or television screens. Large-area OLEDs are also becoming increasingly interesting for new lighting concepts. For the design of such components, the non-linear effect of the self-heating of the materials as well as a resulting switch-back effect must &hellip; <a href=\"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/2020\/04\/22\/hot-oleds-can-switch-back\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Hot OLEDs can &#8220;switch back&#8221;<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":116,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[5,6,7],"class_list":["post-18","post","type-post","status-publish","format-standard","hentry","category-organic-electronics","tag-oleds","tag-self-heating","tag-switch-back"],"_links":{"self":[{"href":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/wp-json\/wp\/v2\/posts\/18","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/wp-json\/wp\/v2\/users\/116"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/wp-json\/wp\/v2\/comments?post=18"}],"version-history":[{"count":3,"href":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/wp-json\/wp\/v2\/posts\/18\/revisions"}],"predecessor-version":[{"id":33,"href":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/wp-json\/wp\/v2\/posts\/18\/revisions\/33"}],"wp:attachment":[{"href":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/wp-json\/wp\/v2\/media?parent=18"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/wp-json\/wp\/v2\/categories?post=18"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.wias-berlin.de\/nano-opto-electronics\/wp-json\/wp\/v2\/tags?post=18"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}