Title :
White Organic Light-Emitting Diode With Linearly Polarized Emission
Author :
Ming-Yi Lin ; Hung-Hsin Chen ; Ku-Hui Hsu ; Yi-Hsiang Huang ; Yi-Jiun Chen ; Hoang Yan Lin ; Yang-Kai Wu ; Wang, Lon A. ; Chung-Chih Wu ; Si-Chen Lee
Author_Institution :
Grad. Inst. of Photonics & Optoelectron., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
An organic light emitting diode (OLED) with a linearly polarized white light emission is demonstrated using a nanograting structure. The aluminum based grating structure is fabricated by laser interference lithography and formed on the back side of the glass substrate of the OLED. The nanograting structure functions as a polarizer to select the transverse magnetic wave in the wavelength range of 400-700 nm. The polarization characteristics are studied experimentally and theoretically in detail. The experimental results agree well with the simulation by a rigorous coupled wave analysis. The polarization ratio of the polarizer can reach as high as 93.4%.
Keywords :
aluminium; diffraction gratings; laser materials processing; optical polarisers; organic light emitting diodes; photolithography; aluminum based grating structure; glass substrate; laser interference lithography; linearly polarized white light emission; nanograting structure; polarization ratio; rigorous coupled wave analysis; transverse magnetic wave; wavelength 400 nm to 700 nm; white organic light emitting diode; Organic light emitting diode (OLED); laser interference lithography; linearly polarized light; nanograting structure;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2263789
