Home > Press > High efficiency infrared photodetectors using gold nanorods
 |
| Fig. 1 shows the structure and dimension of the gold nanorod Schottky diode photodetector, where 10 nm x 100 nm gold rods were used. Fig .2 shows the experimental set up and Fig. 3 the experimental results for light of 1500 nm, showing a significant increase in the photocurrent of the device with the gold nano rods.
|
Abstract:
Toyohashi Tech researchers develop an innovative infrared photodetector exploiting ‘plasmon resonance' at the surface of the Au nanorods, which enhances the density of photoelectrons excited over the Schottky barrier. This technology shows potential as the basis for the development of high efficiency infra-red photodetectors for optical communications systems.
High efficiency infrared photodetectors using gold nanorods
Japan | Posted on March 22nd, 2011
Devices used for the detection of light and other forms of electromagnetic energy include calorimeters, superconducting devices, and photodiodes used in optical communications systems.
Now, typical semiconductor devices include Schottky barrier photodetectors—where a PN junction is not necessary. However, for optical communications systems applications, it is necessary to improve the photo detection efficiency in the 1.3~1.5 micrometer range of wavelengths.
Here, Mitsuo Fukuda and colleagues used the localized surface plasmon (LSP) effects exhibited by gold nano-rods to improve the optical response of Schottky photodiodes. Notably, the desired resonance wavelength can be obtained by appropriate choice of the dimensions of gold nanorods. Thus combining Schottky barriers with gold nanorods holds promise as a means of producing high efficiency photodiodes.
####
For more information, please click here
Contacts:
Toyohashi University of Technology
1-1 Hibarigaoka, Tempaku
Toyohashi, Aichi Prefecture, 441-8580, JAPAN
Inquiries: International Affairs Division
E-mail:
TEL: +81-532-44-6577 or +81-532-44-6546
FAX: +81-532-44-6557
Copyright © Toyohashi Tech
If you have a comment, please
Contact us.
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Bookmark:
News and information
Aspen Aerogels Announces $22.5 Million Private Placement May 18th, 2013
NanoInk, Inc. Assets To Be Sold May 18th, 2013
Beautiful "flowers" self-assemble in a beaker: Elaborate nanostructures blossom from a chemical reaction perfected at Harvard May 17th, 2013
Scientists capture first direct proof of Hofstadter butterfly effect May 17th, 2013
Discoveries
Beautiful "flowers" self-assemble in a beaker: Elaborate nanostructures blossom from a chemical reaction perfected at Harvard May 17th, 2013
Artificial Forest for Solar Water-Splitting: Berkeley Lab Researchers Report First Fully Integrated Artificial Photosynthesis Nanosystem May 17th, 2013
Moth-Inspired Nanostructures Take the Color Out of Thin Films May 17th, 2013
Scientists capture first direct proof of Hofstadter butterfly effect May 17th, 2013
Announcements
Aspen Aerogels Announces $22.5 Million Private Placement May 18th, 2013
NanoInk, Inc. Assets To Be Sold May 18th, 2013
NIA Public Briefing: Nanotechnology and the Council of Europe May 17th, 2013
Scientists capture first direct proof of Hofstadter butterfly effect May 17th, 2013
Photonics/Optics/Lasers
Moth-Inspired Nanostructures Take the Color Out of Thin Films May 17th, 2013
UC Riverside scientists discovering new uses for tiny carbon nanotubes: Adding ionic liquid to nanotube films could build smaller gadgets, and create more cost effective 'Smart Windows' that darken in bright sun May 15th, 2013
HELIOS Program Develops Complete Supply Chain for Integrating Photonics with CMOS Circuit via IC Fabrication Processes May 14th, 2013
VDMA: New “Photonics Industry Report 2013” presented May 14th, 2013