White light‐emitting diodes: history, progress, and future

J Cho, JH Park, JK Kim… - Laser & photonics …, 2017 - Wiley Online Library
About twenty years ago, in the autumn of 1996, the first white light‐emitting diodes (LEDs)
were offered for sale. These then‐new devices ushered in a new era in lighting by …

One-dimensional ZnO nanostructures: solution growth and functional properties

S Xu, ZL Wang - Nano research, 2011 - Springer
Abstract One-dimensional (1D) ZnO nanostructures have been studied intensively and
extensively over the last decade not only for their remarkable chemical and physical …

Enhancement of light extraction from light emitting diodes

AI Zhmakin - Physics Reports, 2011 - Elsevier
The large amount of light emitted from a light emitting diode (LED) being trapped inside the
semiconductor structure is the consequence of the large value of the refractive index. The …

Nonpolar and semipolar III-nitride light-emitting diodes: Achievements and challenges

H Masui, S Nakamura, SP DenBaars… - IEEE Transactions on …, 2009 - ieeexplore.ieee.org
It has been several years since InGaN/GaN light-emitting diodes (LEDs) on nonpolar and
semipolar orientations were first demonstrated. Prominent performance and inherent …

Textured phosphor conversion layer light emitting diode

NN Fellows, SP Denbaars, S Nakamura - US Patent 8,860,051, 2014 - Google Patents
6,373,188 6,417,019 6,452,217 6,515,308 6,547,423 6,548,956 6,569,544 6,573,530
6,573,537 6,607,286 6,674,096 6,686.218 6,717,362 6,729,746 6,746,295 6,784,460 …

High light extraction efficiency light emitting diode (LED)

SP DenBaars, S Nakamura, H Masui… - US Patent …, 2011 - Google Patents
Abstract An (Al, Ga, In) N and ZnO direct wafer bonded light emitting diode (LED) combined
with a shaped plastic optical element, in which the directional light from the ZnO cone, or …

Vertically stacked color tunable light-emitting diodes fabricated using wafer bonding and transfer printing

J Chun, KJ Lee, YC Leem, WM Kang… - … Applied Materials & …, 2014 - ACS Publications
We report on the vertically stacked color tunable light-emitting diodes (LEDs) fabricated
using wafer bonding with an indium tin oxide (ITO) layer and transfer printing by the laser lift …

Synthesis and characterization of ZnO nanorods and nanoflowers grown on GaN-based LED epiwafer using a solution deposition method

H Gao, F Yan, J Li, Y Zeng, J Wang - Journal of Physics D …, 2007 - iopscience.iop.org
We report the growth of hexagonal ZnO nanorods and nanoflowers on GaN-based LED
epiwafer using a solution deposition method. We also discuss the mechanisms of epitaxial …

Pt loaded on truncated hexagonal pyramid WC/graphene for oxygen reduction reaction

C He, PK Shen - Nano Energy, 2014 - Elsevier
We report a microwave-assisted method to synthesize truncated hexagonal pyramid (THP)
tungsten carbide with 5 nm in size on graphene sheets (WC THP/G) for the first time. The …

Light emitting diodes with zinc oxide current spreading and light extraction layers deposited from low temperature aqueous solution

DB Thompson, JJ Richardson, SP DenBaars… - US Patent …, 2017 - Google Patents
(57) ABSTRACT A method for fabricating a Light Emitting Diode (LED) with increased light
extraction efficiency, comprising providing a III-Nitride based LED structure comprising a …