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A silicon nanowire photodetector using Au plasmonic nanoantennas
- Authors
- Jee, Sang Won; Zhou, Keya; Kim, Dong Wook; Lee, Jung Ho
- Issue Date
- Nov-2014
- Publisher
- Springer | Korea Nano Technology Research Society
- Keywords
- Optical absorption; Photodetector; Plasmonic nanoantennas; Plasmonics; Si nanowire; Subwavelength structure
- Citation
- Nano Convergence, v.1, no.1, pp 1 - 7
- Pages
- 7
- Indexed
- SCOPUS
- Journal Title
- Nano Convergence
- Volume
- 1
- Number
- 1
- Start Page
- 1
- End Page
- 7
- ISSN
- 2196-5404
- Abstract
- We suggest a silicon nanowire (SiNW) photodetector side-contacted with hemispherical Au nanoantennas (NAs) that can remarkably amplify the intensity of the near-infrared optical field. The plasmonic NA suppresses visible-range guided mode excitation in SiNW, which enables our photodetector to possess a near-infrared-selective response and overcome the inherent poor optical absorption of Si. The NA can form Schottky contacts with SiNWs for enhancing carrier collection. The vertical NW array also has the geometrically beneficial effects of wide tolerance in light polarization with reduced material consumption. © 2014, Jee et al.; licensee Springer.
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Related Researcher
- Lee, Jung-Ho
- ERICA 첨단융합대학 (ERICA 신소재·반도체공학전공)