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Proceedings Paper

Light-emitting nanolattices with enhanced brightness
Author(s): Ryan C. Ng; Rajib Mandal; Rebecca J. Anthony; Julia R. Greer
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Paper Abstract

Three-dimensional (3D) photonic crystals have potential in solid state lighting applications due to their advantages over conventional planar thin film devices. Periodicity in a photonic crystal structure enables engineering of the density of states to improve spontaneous light emission according to Fermi’s golden rule. Unlike planar thin films, which suffer significantly from total internal reflection, a 3D architectured structure is distributed in space with many non-flat interfaces, which facilitates a substantial enhancement in light extraction. We demonstrate the fabrication of 3D nano-architectures with octahedron geometry that utilize luminescing silicon nanocrystals as active media with an aluminum cathode and indium tin oxide anode towards the realization of a 3D light emitting device. The developed fabrication procedure allows charge to pass through the nanolattice between two contacts for electroluminescence. These initial fabrication efforts suggest that 3D nano-architected devices are realizable and can reach greater efficiencies than planar devices.

Paper Details

Date Published: 16 February 2017
PDF: 7 pages
Proc. SPIE 10124, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI, 101241E (16 February 2017); doi: 10.1117/12.2250081
Show Author Affiliations
Ryan C. Ng, California Institute of Technology (United States)
Rajib Mandal, Michigan State Univ. (United States)
Rebecca J. Anthony, Michigan State Univ. (United States)
Julia R. Greer, California Institute of Technology (United States)

Published in SPIE Proceedings Vol. 10124:
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI
Jong Kyu Kim; Michael R. Krames; Li-Wei Tu; Martin Strassburg, Editor(s)

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