Horizontally assembled green InGaN nanorod LEDs: scalable polarized surface emitting LEDs using electric-field assisted assembly.
In this study, we report the concerted fabrication process, which is easy to transform the size of active emitting area and produce polarized surface light, using the electric-field-assisted assembly for horizontally assembled many tiny nanorod LEDs between two metal electrodes. We fabricate the millions of individually separated 1D nanorod LEDs from 2D nanorod arrays using nanosphere lithography, etching and cutting process of InGaN/GaN LED structure on a flat sapphire substrate. The horizontally assembled InGaN-based nanorods LED device shows bright (~2,130 cd/m(2)) and uniform polarized (polarization ratio, ρ = ~0.61) green emissions from large area (0.7 cm × 0.6 cm) planar surface. The realization of a horizontally assembled nanorod LED device can prove the concept of an innovative idea to fabricate formable and scalable polarized surface LED lighting.
Department of Chemistry, Kookmin University, Seoul 136-702, Korea.
Hoo Keun
HK
Park
Department of Chemistry, Kookmin University, Seoul 136-702, Korea.
Seong Woong
SW
Yoon
Department of Chemistry, Kookmin University, Seoul 136-702, Korea.
Yun Jae
YJ
Eo
Department of Chemistry, Kookmin University, Seoul 136-702, Korea.
Won Woo
WW
Chung
Department of Materials Science and Engineering, Korea University, Seoul 136-713, Korea.
Gang Yeol
GY
Yoo
Department of Chemistry, Kookmin University, Seoul 136-702, Korea.
Ji Hye
JH
Oh
Department of Chemistry, Kookmin University, Seoul 136-702, Korea.
Keyong Nam
KN
Lee
Department of Materials Science and Engineering, Korea University, Seoul 136-713, Korea.
Woong
W
Kim
Department of Chemistry, Kookmin University, Seoul 136-702, Korea.
Young Rag
YR
Do