{"id":236,"date":"2022-01-05T13:34:02","date_gmt":"2022-01-05T05:34:02","guid":{"rendered":"https:\/\/www.eee.hku.hk\/microLED\/?p=236"},"modified":"2022-01-05T13:34:04","modified_gmt":"2022-01-05T05:34:04","slug":"polarized-emission-from-ingan-light-emitting-diodes-with-self-assembled-nanosphere-coatings","status":"publish","type":"post","link":"https:\/\/www.eee.hku.hk\/microLED\/polarized-emission-from-ingan-light-emitting-diodes-with-self-assembled-nanosphere-coatings\/","title":{"rendered":"Polarized Emission From InGaN Light-Emitting Diodes With Self-Assembled Nanosphere Coatings"},"content":{"rendered":"\n

– Q Zhang, KH Li, and HW Choi<\/em><\/p>\n\n\n\n

\"\"
(a) Schematic diagram of the measurement setup, where\u00a0\u03b8\u00a0is the detection angle. The device surface plane (green shade) is perpendicular to the incident plane (yellow shade). Arrows labeled TM and TE indicate the directions of light polarization. (b) Cross-sectional schematic diagram of the GaN LED with nanosphere coating. (c) Cross section of the Brillouin zone indicating the\u00a0Lg<\/sub>-K-L detection path.<\/figcaption><\/figure>\n\n\n\n

IEEE Photonics Technology Letters, vol. 24, 18, pp. 1642-1645 (2012)<\/em><\/strong><\/p>\n\n\n\n

The polarization behavior of light emission from InGaN light-emitting diodes (LEDs) with nanosphere opal coatings has been studied. The close-packed nanosphere opal films are self-assembled with 220-nm polystyrene nanospheres onto the LEDs. The optical transmission properties of transverse electric and transverse magnetic polarized light have been measured as a function of detection angle; an integrated p<\/em>\/s<\/em> ratio of 2.2 has been obtained at a detection angle of 70\u00b0. The polarization of light propagating through the opal film is strongly related to the photonic bandgap of the 3-D photonic crystal and is also dependent upon the angle of incidence. Theoretical calculations by the transfer matrix method are found to be consistent with the measured results.<\/p>\n\n\n\n

DOI: <\/a><\/a><\/a><\/a><\/a><\/a>10.1109\/LPT.2012.2211586<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

– Q Zhang, KH Li, and HW Choi IEEE Photonics Technology Letters, vol. 24, 18, pp. 1642-1645 (2012) The polarization behavior of light emission from…<\/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":[12,6,10,9],"class_list":["post-236","post","type-post","status-publish","format-standard","hentry","category-publications","tag-led","tag-light-extraction","tag-nanosphere","tag-photonic-crystal"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/posts\/236","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=236"}],"version-history":[{"count":1,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/posts\/236\/revisions"}],"predecessor-version":[{"id":238,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/posts\/236\/revisions\/238"}],"wp:attachment":[{"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/media?parent=236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/categories?post=236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eee.hku.hk\/microLED\/wp-json\/wp\/v2\/tags?post=236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}