CER - Central Repository
Institute of Chemistry, Technology and Metallurgy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrilic)
    • Serbian (Latin)
  • Login
View Item 
  •   Central Repository
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
  •   Central Repository
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Redshift by Design for Plasmonic Enhancement of Ultrathin Infrared Detectors

Authorized Users Only
2013
Authors
Obradov, Marko
Jakšić, Zoran
Sarajlić, Milija
Ranđelović, Danijela
Conference object (Published version)
Metadata
Show full item record
Abstract
In order to maximize sensitivity and specific detectivity of photodetectors, one has to ensure optimal light concentration within the active area. We considered light trapping based on surface plasmon resonance (SPR) in infrared detectors for night vision purposes. We investigated redshifting by the replacement of metal with transparent conductive oxides (TCO) like indium tin oxide and zinc oxide. We considered nanoparticle fillers embedded in a thin dielectric host with increased relative permittivity and located at the detector surface. We used finite element method to perform optimization of our plasmonic light trapping structures. Regarding the infrared detectors, we considered epitaxial mercury cadmium telluride devices with a typical active layer thickness of 4-8 micrometers. Our results show that sensitivity and specific detectivity of narrow-bandgap detectors can be significantly enhanced. Even thinner active areas than those conventionally used can be used. Since the overall l...evel of intrinsic noise in a night vision detector (especially generation-recombination noise due to Auger processes) is dependent on the volume of the active region, in our case this noise is suppressed by the same mechanism that ensures sensitivity enhancement. Thus additional improvement of specific detectivity is achieved, which allows for higher operating temperatures of night vision photodetectors.

Source:
Progress in Electromagnetics Research Symposium, 2013, 1712-1716
Projects:
  • Micro- Nanosystems and Sensors for Electric Power and Process Industry and Environmental Protection (RS-32008)

ISSN: 1559-9450

WoS: 000361384200361

Scopus: 2-s2.0-84884795938
[ Google Scholar ]
URI
http://cer.ihtm.bg.ac.rs/handle/123456789/1245
Collections
  • Radovi istraživača / Researchers' publications
Institution
IHTM

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

OpenAIRERCUB
 

 

All of DSpaceInstitutionsAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

OpenAIRERCUB