{"id":87491,"date":"2019-02-06T14:23:34","date_gmt":"2019-02-06T22:23:34","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2019\/02\/quantum-dot-white-leds-achieve-record-efficiency"},"modified":"2019-02-06T14:23:34","modified_gmt":"2019-02-06T22:23:34","slug":"quantum-dot-white-leds-achieve-record-efficiency","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2019\/02\/quantum-dot-white-leds-achieve-record-efficiency","title":{"rendered":"Quantum dot white LEDs achieve record efficiency"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/quantum-dot-white-leds-achieve-record-efficiency.jpg\"><\/a><\/p>\n<p>Circa 2018<\/p>\n<hr>\n<p>Researchers have demonstrated nanomaterial-based white-light-emitting diodes (LEDs) that exhibit a record luminous efficiency of 105 lumens per watt. Luminous efficiency is a measure of how well a light source uses power to generate light. With further development, the new LEDs could reach efficiencies over 200 lumens per watt, making them a promising energy-efficient lighting source for homes, offices and televisions.<\/p>\n<p>\u201cEfficient LEDs have strong potential for saving energy and protecting the environment,\u201d said research leader Sedat Nizamoglu, Ko\u00e7 University, Turkey. \u201cReplacing conventional lighting sources with LEDs with an <a href=\"https:\/\/phys.org\/tags\/efficiency\/\" rel=\"tag\" class=\"\">efficiency<\/a> of 200 lumens per watt would decrease the global electricity consumed for lighting by more than half. That reduction is equal to the electricity created by 230 typical 500-megawatt coal plants and would reduce greenhouse gas emissions by 200 million tons.\u201d<\/p>\n<p>The researchers describe how they created the high-efficiency white LEDs in <i>Optica<\/i>, The <i>Optica <\/i>l Society\u2019s journal for high impact research. The new LEDs use commercially available blue LEDs combined with flexible lenses filled with a solution of nano-sized semiconductor particles called <a href=\"https:\/\/phys.org\/tags\/quantum+dots\/\" rel=\"tag\" class=\"\">quantum dots<\/a>. Light from the blue LED causes the <a href=\"https:\/\/phys.org\/tags\/quantum\/\" rel=\"tag\" class=\"\">quantum<\/a> dots to emit green and red, which combines with the blue emission to create <a href=\"https:\/\/phys.org\/tags\/white+light\/\" rel=\"tag\" class=\"\">white light<\/a>.<\/p>\n<p><!-- Link: <a href=\"https:\/\/phys.org\/news\/2018-07-quantum-dot-white-efficiency.html\">https:\/\/phys.org\/news\/2018&#45;07-quantum-dot-white-efficiency.html<\/a> --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Circa 2018 Researchers have demonstrated nanomaterial-based white-light-emitting diodes (LEDs) that exhibit a record luminous efficiency of 105 lumens per watt. Luminous efficiency is a measure of how well a light source uses power to generate light. With further development, the new LEDs could reach efficiencies over 200 lumens per watt, making them a promising energy-efficient [\u2026]<\/p>\n","protected":false},"author":513,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,48,1617,17],"tags":[],"class_list":["post-87491","post","type-post","status-publish","format-standard","hentry","category-nanotechnology","category-particle-physics","category-quantum-physics","category-sustainability"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/87491","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\/513"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=87491"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/87491\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=87491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=87491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=87491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}