A wafer-level integrated white-light-emitting diode incorporating colloidal quantum dots as a nanocomposite
Cuong Dang1, Joonhee Lee, Yu Zhang
1School of Engineering, Brown University, Providence, Rhode Island 02912, USA.
Advanced Materials (Deerfield Beach, Fla.)
|August 29, 2012
Abstract:
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%.


