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Enhancement of Light Emission from Silicon by Utilizing Photonic Nanostructures Satoshi IWAMOTO Yasuhiko ARAKAWA Publication IEICE TRANSACTIONS on Electronics Vol.E95-C No.2 pp.206-212 Publication Date: 2012/02/01 Online ISSN: 1745-1353 DOI: 10.1587/transele.E95.C.206 Print ISSN: 0916-8516 Type of Manuscript: Special Section INVITED PAPER (Special Section on Photonic Devices using Nanofabrication Technology and Their Applications) Category: Keyword: photonic nanostructures, photonic crystals, nanocavity, Purell effect, silicon, light emission, LED, Full Text: FreePDF(2.8MB) Summary: Efficient silicon-based light sources are expected to be key devices for applications such as optical interconnection. Huge number of researches has been conducted for realizing silicon-based light sources. Most of them utilized silicon-related materials such as silicon nanostructures or germanium, not crystalline silicon, which has been considered as a poor light emitter because of its indirect electronic bandgap. Light emission properties of materials can be tailored not only by modifying the material properties directly, but also by controlling the electromagnetic environment surrounding the material. Photonic nanostructures are a powerful tool for creating the engineered environment. In this paper, we briefly review the mechanisms for improving the light emission properties of materials by photonic nanostructures and present our recent experimental results showing the enhancement of light emission from silicon by introducing photonic crystal structures. | |||||
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