Title :
Fabrication and Effects of Ag Nanoparticles Hexagonal Arrays in Green LEDs by Nanoimprint
Author :
Shuang Jiang ; Zhizhong Chen ; Xingxing Fu ; Qianqian Jiao ; Yulong Feng ; Wei Yang ; Jian Ma ; Junze Li ; Shengxiang Jiang ; Tongjun Yu ; Guoyi Zhang
Author_Institution :
State Key Lab. of Artificial Microstructure & Mesoscopic Phys., Peking Univ., Beijing, China
Abstract :
In this letter, the Ag nanoparticles (NPs), which are located inside the hexagonal photonic crystals (PhCs) array holes, are successfully fabricated in green light-emitting diode (LED) by nanoimprint and lift-off techniques. The photoluminescence intensity of the green LED is increased by 4.5 folds compared with that of the bare LED due to the PhCs effect and the localized surface plasmon (LSP) multiple quantum wells coupling effect, which is further confirmed by the enhanced decay rate of LSP-functioned LED. In the simulation of 3-D finite difference time domain, it reveals that the morphology of Ag NP will affect the LSP resonant strength and the light scattering efficiency besides the periodic structure.
Keywords :
finite difference time-domain analysis; integrated optoelectronics; light emitting diodes; nanofabrication; nanolithography; nanoparticles; nanophotonics; optical arrays; optical fabrication; photoluminescence; photonic crystals; semiconductor quantum wells; silver; surface plasmon resonance; 3D finite difference time domain; Ag; LSP multiple quantum wells coupling effect; LSP resonant strength; PhC; enhanced decay rate; green LED; hexagonal arrays; hexagonal photonic crystals array holes; lift-off techniques; light emitting diode; light scattering efficiency; localized surface plasmon; nanoimprint; nanoparticle morphology; periodic structure; photoluminescence intensity; Couplings; Finite difference methods; Green products; Light emitting diodes; Photonic crystals; Plasmons; Time-domain analysis; Light-emitting diodes; fabrication; photoluminescence; surface plasmons;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2421497
