| Improving the optical performance of InGaN light-emitting diodes by altering light reflection and refraction with triangular air prism arrays. | |
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MedLine Citation:
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PMID: 22212800 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The effect of triangular air prism (TAP) arrays with different distance-to-width (d/w) ratios on the enhancement of light extraction efficiency (LEE) of InGaN light-emitting diodes (LEDs) is investigated. The TAP arrays embedded at the sapphire/GaN interface act as light reflectors and refractors, and thereby improve the light output power due to the redirection of light into escape cones on both the front and back sides of the LED. Enhancement in radiometric power as high as 117% and far-field angle as low as 129° are realized with a compact arrangement of TAP arrays compared with that of a conventional LED made without TAP arrays under an injection current of 20 mA. |
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Authors:
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Ji Hye Kang; Hyung Gu Kim; S Chandramohan; Hyun Kyu Kim; Hee Yun Kim; Jae Hyoung Ryu; Young Jae Park; Yun Seon Beak; Jeong-Sik Lee; Joong Seo Park; Volodymyr V Lysak; Chang-Hee Hong |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Optics letters Volume: 37 ISSN: 1539-4794 ISO Abbreviation: Opt Lett Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-01-03 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7708433 Medline TA: Opt Lett Country: United States |
Other Details:
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Languages: eng Pagination: 88-90 Citation Subset: IM |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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