Enhancement of Light Extraction Efficiency in OLED with Periodic Nano-Structure

Author

Yan, Rong-jin ; Wang, Qing-kang

Author_Institution

Inst. of Micro & Nano-Sci. & Technol., Shanghai Jiaotong Univ., Shanghai

fYear

2006

fDate

18-21 Jan. 2006

Firstpage

713

Lastpage

716

Abstract

To improve the light-extraction-efficiency of organic light emitting diode (OLED), we introduced novel photonic crystal slab (PCS) structures with Taper unit cells into the interface of ITO layer and glass substrate. By optimizing the geometric parameters, we proved that the PCS with triangular lattice of Taper cells was more effective in reducing the energy of guided wave trapped in OLED than the traditional PCS structures. Light-extraction-efficiency of OLED based on this PCS increased by 95.26%. Physical mechanisms of light- extraction-efficiency enhancement in these structures are further discussed.

Keywords

organic light emitting diodes; photonic crystals; OLED; Taper unit cells; light extraction efficiency; organic light emitting diode; periodic nanostructure; photonic crystal slab; Finite difference methods; Glass; Indium tin oxide; Lattices; Nanoscale devices; Optical waveguides; Organic light emitting diodes; Personal communication networks; Photonic crystals; Slabs; Finite Difference Time Domain (FDTD) method; Light extraction efficiency; OLED; Photonic crystal slab with taper unit cells;

fLanguage

English

Publisher

ieee

Conference_Titel

Nano/Micro Engineered and Molecular Systems, 2006. NEMS '06. 1st IEEE International Conference on

Conference_Location

Zhuhai

Print_ISBN

1-4244-0139-9

Electronic_ISBN

1-4244-0140-2

Type

conf

DOI

10.1109/NEMS.2006.334879

Filename

4135052