Enhancement of light extraction efficiency in OLED with two-dimensional photonic crystal slabs
Chinese Optics Letters, Vol. 4, Issue 6, pp. 353-356 (2006)
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Abstract
Light extraction efficiency of organic light emitting diode (OLED) based on various photonic crystal slab (PCS) structures was studied. By using the finite-difference time-domain (FDTD) method, we investigated the effect of several parameters, including filling factor and lattice constant, on the enhancement of light extraction efficiency of three basic PCSs, and got the most effective one. Two novel designs of "interlaced" and "double-interlaced" PCS structures based on the most effective basic PCS structure were introduced, and the "interlaced" one was proved to be even more efficient than its prototype. Large enhancement of light extraction efficiency resulted from the coupling to leaky modes in the expended light cone of a band structure, the diffraction in the space between columns, as well as the strong scattering at indium-tin-oxide/glass interfaces.
© 2006 Chinese Optics Letters
OCIS Codes
(160.4670) Materials : Optical materials
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.0230) Optical devices : Optical devices
Citation
Rongjin Yan and Qingkang Wang, "Enhancement of light extraction efficiency in OLED with two-dimensional photonic crystal slabs," Chin. Opt. Lett. 4, 353-356 (2006)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-4-6-353
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