標題: Optimal design and fabrication of ITO/organic photonic crystals in polymer light-emitting diodes using a focused ion beam
作者: Tsai, Che-Hung
Liao, Lun-De
Luo, Yi-Shiun
Chao, Paul C. -P.
Chen, En-Chen
Meng, Hsin-Fei
Chen, Wei-Dar
Lin, Shir-Kuan
Lin, Chin-Teng
影像與生醫光電研究所
物理研究所
電機工程學系
Institute of Imaging and Biomedical Photonics
Institute of Physics
Department of Electrical and Computer Engineering
關鍵字: Focused ion beam;Light extraction efficiency;Photonic crystals;Polymer light-emitting diodes
公開日期: 1-May-2010
摘要: This study aims to achieve high directionality and large extraction of light emission from polymer light-emitting diodes via optimizing photonic crystals (PCs). The optimization is achieved through the optical modeling using a 3D finite-difference time-domain (FDTD) method and the intelligent numerical optimization technique, genetic algorithm (GA). In results, the PC period, depth and filling factor can be found. The FDTD method has been proven very effective for modeling complex multilayer PLED devices in which the electron-transporting layer is only a few tens of nanometers away from a metallic layer. On the other hand, GA is a powerful tool to cope with a complicated optimization problem with multiple variables to optimize. The optimized PCs are later fabricated by focused ion beams (FIB) for the PLED. With desired PCs, an increase of the extraction efficiency in excess of 46% is achieved experimentally and the 3D FDTD calculation explains this result faithfully. (C) 2009 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.mee.2009.12.041
http://hdl.handle.net/11536/9789
ISSN: 0167-9317
DOI: 10.1016/j.mee.2009.12.041
期刊: MICROELECTRONIC ENGINEERING
Volume: 87
Issue: 5-8
起始頁: 1331
結束頁: 1335
Appears in Collections:Conferences Paper


Files in This Item:

  1. 000276300700165.pdf