Title :
Design and simulation of superperiodic photonic-crystal light emitting diodes with highly directive luminance characteristics
Author :
Song, G. Hugh ; Lim, Chan M.
Author_Institution :
Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol. (GIST), Gwangju, South Korea
Abstract :
By use of finite-differene time-domain analysis for lightwave devices, a novel super-periodic photonic-crystal light-emitting diode (LED) design exhibiting high-luminance patterns is proposed for applications that require highly-directive vertical light extraction. The device design is made on the theoretical consideration on the density of radiation modes within the photonic band coupled with far-field diffraction of the spontaneously-emitted light from a structure with double periodicity.
Keywords :
brightness; finite difference time-domain analysis; light emitting diodes; photonic crystals; LED; directive luminance; far-field diffraction; finite differene time-domain analysis; highly-directive vertical light extraction; photonic band; radiation modes; superperiodic photonic crystal light emitting diodes; Analytical models; Dielectric devices; Diffraction; Finite difference methods; Light emitting diodes; Optical devices; Periodic structures; Photonic band gap; Photonic crystals; Time domain analysis;
Conference_Titel :
Numerical Simulation of Optoelectronic Devices, 2009. NUSOD 2009. 9th International Conference on
Conference_Location :
Gwangju
Print_ISBN :
978-1-4244-4180-8
DOI :
10.1109/NUSOD.2009.5297248
