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|a (TOE)ost1226807
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|a (TOE)1226807
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|a 9,196,788
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|a High extraction efficiency ultraviolet light-emitting diode
|h [electronic resource]
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|a Washington, D.C. :
|b United States. Department of Energy. ;
|a Oak Ridge, Tenn. :
|b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
|c 2015.
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|a text
|b txt
|2 rdacontent.
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|a computer
|b c
|2 rdamedia.
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|a online resource
|b cr
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|a Published through SciTech Connect.
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|a 11/24/2015.
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|a "9,196,788"
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|a "14/480,072"
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|a Wierer, Jonathan; Montano, Ines; Allerman, Andrew.
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|a Ultraviolet light-emitting diodes with tailored AlGaN quantum wells can achieve high extraction efficiency. For efficient bottom light extraction, parallel polarized light is preferred, because it propagates predominately perpendicular to the QW plane and into the typical and more efficient light escape cones. This is favored over perpendicular polarized light that propagates along the QW plane which requires multiple, lossy bounces before extraction. The thickness and carrier density of AlGaN QW layers have a strong influence on the valence subband structure, and the resulting optical polarization and light extraction of ultraviolet light-emitting diodes. At Al>0.3, thinner QW layers (<2.5 nm are preferred) result in light preferentially polarized parallel to the QW plane. Also, active regions consisting of six or more QWs, to reduce carrier density, and with thin barriers, to efficiently inject carriers in all the QWs, are preferred.
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|b AC04-94AL85000.
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|a Instrumentation Related To Nuclear Science And Technology.
|2 edbsc.
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|a Sandia National Laboratories.
|4 res.
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|a United States.
|b Department of Energy.
|4 spn.
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|a United States.
|b Department of Energy.
|b Office of Scientific and Technical Information.
|4 dst.
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|u http://www.osti.gov/scitech/biblio/1226807
|z Online Access (via OSTI)
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| 907 |
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|a .b85271172
|b 03-09-23
|c 02-23-16
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|a web
|b 05-12-17
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| 952 |
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|p Can circulate
|a University of Colorado Boulder
|b Online
|c Online
|d Online
|e E 1.99:9,196,788
|h Superintendent of Documents classification
|i web
|n 1
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