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A Wafer‐Level Integrated White‐Light‐Emitting Diode Incorporating Colloidal Quantum Dots as a Nanocomposite Luminescent Material
Author(s) -
Dang Cuong,
Lee Joonhee,
Zhang Yu,
Han Jung,
Breen Craig,
Steckel Jonathan S.,
CoeSullivan Seth,
Nurmikko Arto
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201202354
Subject(s) - materials science , nanoporous , nanomaterials , optoelectronics , quantum dot , nanocomposite , wafer , light emitting diode , luminescence , diode , brightness , nanotechnology , optics , physics
High‐brightness, color‐tunable colloidal quantum dots are incorporated in 3D nanoporous GaN to create a nanocomposite material (CQD/NP‐GaN), which is demonstrated to be an effective approach for a wavelength down‐conversion nanomaterial in solid‐state lighting. The white‐light‐emitting diode (LED) made from a blue GaN‐based LED and the CQD/NP‐GaN shows an increase of extraction efficiency by a factor of 2, a controllable white color, and a down‐conversion quantum efficiency as high as 82%.