Title :
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
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;
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
DOI :
10.1109/NEMS.2006.334879
