{"id":232,"date":"2022-01-05T13:31:12","date_gmt":"2022-01-05T05:31:12","guid":{"rendered":"https:\/\/www.eee.hku.hk\/microLED\/?p=232"},"modified":"2022-01-05T13:31:13","modified_gmt":"2022-01-05T05:31:13","slug":"ingan-light%e2%80%90emitting-diodes-with-indium%e2%80%90tin%e2%80%90oxide-sub%e2%80%90micron-lenses-patterned-by-nanosphere-lithography","status":"publish","type":"post","link":"https:\/\/www.eee.hku.hk\/microLED\/ingan-light%e2%80%90emitting-diodes-with-indium%e2%80%90tin%e2%80%90oxide-sub%e2%80%90micron-lenses-patterned-by-nanosphere-lithography\/","title":{"rendered":"InGaN light\u2010emitting diodes with indium\u2010tin\u2010oxide sub\u2010micron lenses patterned by nanosphere lithography"},"content":{"rendered":"\n<p class=\"has-text-align-right wp-block-paragraph\">&#8211; <em>Q Zhang, KH Li, and HW Choi<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"669\" src=\"https:\/\/www.eee.hku.hk\/microLED\/wp-content\/uploads\/2022\/01\/1.3684505.figures.f2-1024x669.jpeg\" alt=\"\" class=\"wp-image-233\" srcset=\"https:\/\/www.eee.hku.hk\/microLED\/wp-content\/uploads\/2022\/01\/1.3684505.figures.f2-1024x669.jpeg 1024w, https:\/\/www.eee.hku.hk\/microLED\/wp-content\/uploads\/2022\/01\/1.3684505.figures.f2-300x196.jpeg 300w, https:\/\/www.eee.hku.hk\/microLED\/wp-content\/uploads\/2022\/01\/1.3684505.figures.f2-768x502.jpeg 768w, https:\/\/www.eee.hku.hk\/microLED\/wp-content\/uploads\/2022\/01\/1.3684505.figures.f2-1536x1003.jpeg 1536w, https:\/\/www.eee.hku.hk\/microLED\/wp-content\/uploads\/2022\/01\/1.3684505.figures.f2-2048x1337.jpeg 2048w, https:\/\/www.eee.hku.hk\/microLED\/wp-content\/uploads\/2022\/01\/1.3684505.figures.f2-459x300.jpeg 459w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>AFM images showing nano\u2010lens with diameter of (a) 195\u2009nm, (b) 310\u2009nm, and (c) 500\u2009nm; FE\u2010SEM images showing nano\u2010lens array in good packing order with diameter of (d) 195\u2009nm, (e) 310\u2009nm, and (f) 500\u2009nm.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Applied Physics Letters, vol. 100, 6, pp. 061120 (2012)<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Close\u2010packed micro\u2010lenses with dimensions of the order of wavelength have been integrated onto the indium\u2010tin\u2010oxide (ITO) layer of GaN light\u2010emitting diodes employing nanosphere lithography. The ITO lens arrays are transferred from a self\u2010assembled silica nanosphere array by dry etching, leaving the semiconductor layer damage\u2010free. An enhancement of up to 63.5% on optical output power from the lensed light\u2010emitting diode (LED) has been observed. Lens\u2010patterned LEDs are also found to exhibit reduced emission divergence. Three\u2010dimensional finite\u2010difference time\u2010domain simulations performed for light extraction and emission characteristics are found to be consistent with the observed results.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DOI:<a href=\"https:\/\/doi.org\/10.1109\/LED.2004.826541\" data-type=\"URL\" data-id=\"https:\/\/doi.org\/10.1109\/LED.2004.826541\"> <\/a><a rel=\"noreferrer noopener\" href=\"https:\/\/doi.org\/10.1088\/0957-4484\/19\/25\/255302\" data-type=\"URL\" data-id=\"https:\/\/doi.org\/10.1088\/0957-4484\/19\/25\/255302\" target=\"_blank\"><\/a><a href=\"https:\/\/doi-org.eproxy.lib.hku.hk\/10.1088\/0957-4484\/19\/35\/355203\" data-type=\"URL\" data-id=\"https:\/\/doi-org.eproxy.lib.hku.hk\/10.1088\/0957-4484\/19\/35\/355203\"><\/a><a href=\"https:\/\/doi.org\/10.1109\/JPHOT.2009.2020963\" data-type=\"URL\" data-id=\"https:\/\/doi.org\/10.1109\/JPHOT.2009.2020963\"><\/a><a rel=\"noreferrer noopener\" href=\"https:\/\/doi.org\/10.1364\/OE.17.009873\" data-type=\"URL\" data-id=\"https:\/\/doi.org\/10.1364\/OE.17.009873\" target=\"_blank\"><\/a><a href=\"https:\/\/doi.org\/10.1109\/LPT.2009.2022751\" data-type=\"URL\" data-id=\"https:\/\/doi.org\/10.1109\/LPT.2009.2022751\"><\/a><a href=\"https:\/\/doi.org\/10.1063\/1.3684505\" data-type=\"URL\" data-id=\"https:\/\/doi.org\/10.1063\/1.3684505\" target=\"_blank\" rel=\"noreferrer noopener\">10.1063\/1.3684505<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8211; Q Zhang, KH Li, and HW Choi Applied Physics Letters, vol. 100, 6, pp. 061120 (2012) Close\u2010packed micro\u2010lenses with dimensions of the order of&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[12,6,8,10],"class_list":["post-232","post","type-post","status-publish","format-standard","hentry","category-publications","tag-led","tag-light-extraction","tag-monolithic","tag-nanosphere"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/posts\/232","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/comments?post=232"}],"version-history":[{"count":1,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/posts\/232\/revisions"}],"predecessor-version":[{"id":234,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/posts\/232\/revisions\/234"}],"wp:attachment":[{"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/media?parent=232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/categories?post=232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/tags?post=232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}