{"id":224520,"date":"2025-11-05T01:11:01","date_gmt":"2025-11-05T07:11:01","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/11\/engineers-achieve-record-31-efficiency-in-red-quantum-leds-for-enhanced-display-color-and-brightness"},"modified":"2025-11-05T01:11:01","modified_gmt":"2025-11-05T07:11:01","slug":"engineers-achieve-record-31-efficiency-in-red-quantum-leds-for-enhanced-display-color-and-brightness","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/11\/engineers-achieve-record-31-efficiency-in-red-quantum-leds-for-enhanced-display-color-and-brightness","title":{"rendered":"Engineers achieve record 31% efficiency in red quantum LEDs for enhanced display color and brightness"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/engineers-achieve-record-31-efficiency-in-red-quantum-leds-for-enhanced-display-color-and-brightness2.jpg\"><\/a><\/p>\n<p>A research team led by the School of Engineering of The Hong Kong University of Science and Technology (HKUST) has made significant advances in quantum rod light-emitting diodes (QR-LEDs), setting record-high efficiency level for red QR-LEDs. This innovation is poised to revolutionize next-generation display and lighting technologies, offering smartphone and television users a vibrant and enhanced visual experience. The research is <a href=\"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/10.1002\/adma.202504559\" target=\"_blank\">published<\/a> in the journal Advanced Materials.<\/p>\n<p>LEDs have been widely used in <a href=\"https:\/\/techxplore.com\/tags\/electronic+products\/\" rel=\"tag\" class=\"\">electronic products<\/a> for decades. Recent developments in <a href=\"https:\/\/techxplore.com\/tags\/quantum+materials\/\" rel=\"tag\" class=\"\">quantum materials<\/a> have given rise to quantum dot LEDs (QD-LEDs) and QR-LEDs. QD-LEDs offer superior color purity (color vividness) and higher brightness compared to current mainstream LEDs. However, outcoupling efficiency has now become the primary obstacle, as it sets a fundamental ceiling for external quantum efficiency (EQE), thereby hindering any further performance improvements.<\/p>\n<p>Quantum rods, on which QR-LEDs are based, are a type of elongated anisotropic nanocrystals with unique optical properties that can be engineered to optimize the light emission direction and ultimately improve outcoupling efficiency. However, QR-LEDs encounter two significant technical challenges: first, the ratio of emitted to absorbed photons (photoluminescence quantum yield) is relatively low after the material absorbs photons; second, there is a substantial leakage current due to poor thin-film quality.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A research team led by the School of Engineering of The Hong Kong University of Science and Technology (HKUST) has made significant advances in quantum rod light-emitting diodes (QR-LEDs), setting record-high efficiency level for red QR-LEDs. This innovation is poised to revolutionize next-generation display and lighting technologies, offering smartphone and television users a vibrant and [\u2026]<\/p>\n","protected":false},"author":662,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1523,1512,1617],"tags":[],"class_list":["post-224520","post","type-post","status-publish","format-standard","hentry","category-computing","category-mobile-phones","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/224520","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/662"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=224520"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/224520\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=224520"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=224520"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=224520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}