Plasmonic-Resonant Bowtie Antenna for Carbon Nanotube Photodetectors
Joint Authors
Fung, Carmen Kar Man
Chen, Liangliang
Xi, Ning
Lou, Jianyong
Lai, King Wai Chiu
Chen, Hongzhi
Source
International Journal of Optics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-15
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The design of bowtie antennas for carbon nanotube (CNT) photodetectors has been investigated.
CNT photodetectors have shown outstanding performance by using CNT as sensing element.
However, detection wavelength is much larger than the diameter of the CNT, resulting in small fill factor.
Bowtie antenna can confine light into a subwavelength volume based on plasmonic resonance, thus integrating a bowtie antenna to CNT photodetectors can highly improve photoresponse of the detectors.
The electric field enhancement of bowtie antennas was calculated using the device geometry by considering fabrication difficulties and photodetector structure.
It is shown that the electric field intensity enhancement increased exponentially with distance reduction between the CNT photodetector to the antenna.
A redshift of the peak resonance wavelength is predicted due to the increase of tip angles of the bowtie antennas.
Experimental results showed that photocurrent enhancement agreed well with theoretical calculations.
Bowtie antennas may find wide applications in nanoscale photonic sensors.
American Psychological Association (APA)
Chen, Hongzhi& Xi, Ning& Lai, King Wai Chiu& Chen, Liangliang& Fung, Carmen Kar Man& Lou, Jianyong. 2012. Plasmonic-Resonant Bowtie Antenna for Carbon Nanotube Photodetectors. International Journal of Optics،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-463067
Modern Language Association (MLA)
Chen, Hongzhi…[et al.]. Plasmonic-Resonant Bowtie Antenna for Carbon Nanotube Photodetectors. International Journal of Optics No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-463067
American Medical Association (AMA)
Chen, Hongzhi& Xi, Ning& Lai, King Wai Chiu& Chen, Liangliang& Fung, Carmen Kar Man& Lou, Jianyong. Plasmonic-Resonant Bowtie Antenna for Carbon Nanotube Photodetectors. International Journal of Optics. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-463067
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-463067