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Surface Plasmon Enhanced Light Emission from Organic Light Emitters


Neal, Terrell Demetris (2006) Surface Plasmon Enhanced Light Emission from Organic Light Emitters. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/DH6C-2C59.


We have experimentally verified that visible light emission for various organic light emitters can be enhanced through the use of surface plasmon coupling layers. By matching the plasmon frequency of a thin unpatterned silver film to the emission of a dye-doped polymer deposited onto this metal surface, we have observed an 11-fold enhancement of light emission. By patterning the silver layer, we estimate that the plasmon frequency can be tuned to match dye-doped polymer emission frequencies, and even larger emission enhancements as well as extraction efficiencies are expected. Carrier dynamics of such plasmon-enhanced organic light emitters were studied and a recombination rate increase due to surface plasmon polaritons was experimentally observed. Internal quantum efficiency data from the polyfluorenes studied follow the trend supported by the time-resolved photoluminescence measurements. Also, we have presented a way to extend the lifetime of organic light emitters by reducing the photodegredation effects from photo-oxidation using surface plasmon coupling.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:nanogratings; organic light emitters; surface plasmons
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Minor Option:Applied Physics
Awards:Graduate Deans’ Award for Outstanding Community Service, 2006.
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Scherer, Axel
Thesis Committee:
  • Scherer, Axel (chair)
  • Yang, Changhuei
  • Vahala, Kerry J.
  • Painter, Oskar J.
  • Tai, Yu-Chong
Defense Date:30 May 2006
Record Number:CaltechETD:etd-09222006-151349
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3698
Deposited By: Imported from ETD-db
Deposited On:25 Sep 2006
Last Modified:20 Apr 2020 21:55

Thesis Files

PDF (Terrell_D_Neal.pdf) - Final Version
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