{"id":251,"date":"2022-01-05T13:46:49","date_gmt":"2022-01-05T05:46:49","guid":{"rendered":"https:\/\/www.eee.hku.hk\/microLED\/?p=251"},"modified":"2022-01-05T13:46:51","modified_gmt":"2022-01-05T05:46:51","slug":"observation-of-enhanced-visible-and-infrared-emissions-in-photonic-crystal-thin-film-light-emitting-diodes","status":"publish","type":"post","link":"https:\/\/www.eee.hku.hk\/microLED\/observation-of-enhanced-visible-and-infrared-emissions-in-photonic-crystal-thin-film-light-emitting-diodes\/","title":{"rendered":"Observation of enhanced visible and infrared emissions in photonic crystal thin-film light-emitting diodes"},"content":{"rendered":"\n

– YF Cheung, KH Li, RSY Hui, and HW Choi<\/em><\/p>\n\n\n\n

\"\"
FE-SEM image showing the HCP nano-pillar array fabricated by NSL. (b) Schematic diagram (not-to-scale) of the vertical PhC thin-film LED. Microphotographs of the (c) V-PhCLED, (d) V-LED, and (e) L-LED.<\/figcaption><\/figure>\n\n\n\n

Applied Physics Letters, vol. 105, 7, pp. 071104 (2014)<\/em><\/strong><\/p>\n\n\n\n

Photonic crystals, in the form of closed-packed nano-pillar arrays patterned by nanosphere lithography, have been formed on the n-faces of InGaN thin-film vertical light-emitting diodes (LEDs). Through laser lift-off of the sapphire substrate, the thin-film LEDs conduct vertically with reduced dynamic resistances, as well as reduced thermal resistances. The photonic crystal plays a role in enhancing light extraction, not only at visible wavelengths but also at infrared wavelengths boosting heat radiation at high currents, so that heat-induced effects on internal quantum efficiencies are minimized. The observations are consistent with predictions from finite-difference time-domain simulations.<\/p>\n\n\n\n

DOI: <\/a><\/a><\/a><\/a><\/a><\/a>10.1063\/1.4893739<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

– YF Cheung, KH Li, RSY Hui, and HW Choi Applied Physics Letters, vol. 105, 7, pp. 071104 (2014) Photonic crystals, in the form of…<\/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":[12,6,8,11,9,14],"class_list":["post-251","post","type-post","status-publish","format-standard","hentry","category-publications","tag-led","tag-light-extraction","tag-monolithic","tag-nanostructure","tag-photonic-crystal","tag-thin-film"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/posts\/251","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=251"}],"version-history":[{"count":1,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/posts\/251\/revisions"}],"predecessor-version":[{"id":253,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/posts\/251\/revisions\/253"}],"wp:attachment":[{"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/media?parent=251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/categories?post=251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/tags?post=251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}