Surface Plasmon Based Nanophotonic Optical Emitters Metadata
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- Main Title Surface Plasmon Based Nanophotonic Optical Emitters
Author: Vemuri, Padma RekhaCreator Type: Personal
Chair: Vaidyanathan, VijayContributor Type: PersonalContributor Info: Major Professor
Chair: Neogi, ArupContributor Type: PersonalContributor Info: Co-Major Professor
Committee Member: Grubbs, Albert B.Contributor Type: PersonalContributor Info: Albert B. Grubbs, Jr.
Committee Member: Wang, ShupingContributor Type: Personal
Committee Member: Saha, Sambit K.Contributor Type: Personal
Name: University of North TexasPlace of Publication: Denton, Texas
- Creation: 2005-12
- Digitized: 2008-02-12
- Content Description: Group- III nitride based semiconductors have emerged as the leading material for short wavelength optoelectronic devices. The InGaN alloy system forms a continuous and direct bandgap semiconductor spanning ultraviolet (UV) to blue/green wavelengths. An ideal and highly efficient light-emitting device can be designed by enhancing the spontaneous emission rate. This thesis deals with the design and fabrication of a visible light-emitting device using GaN/InGaN single quantum well (SQW) system with enhanced spontaneous emission. To increase the emission efficiency, layers of different metals, usually noble metals like silver, gold and aluminum are deposited on GaN/InGaN SQWs using metal evaporator. Surface characterization of metal-coated GaN/InGaN SQW samples was carried out using atomic force microscopy (AFM) and scanning electron microscopy (SEM). Photoluminescence is used as a tool for optical characterization to study the enhancement in the light emitting structures. This thesis also compares characteristics of different metals on GaN/InGaN SQW system thus allowing selection of the most appropriate material for a particular application. It was found out that photons from the light emitter couple more to the surface plasmons if the bandgap of former is close to the surface plasmon resonant energy of particular metal. Absorption of light due to gold reduces the effective mean path of light emitted from the light emitter and hence quenches the quantum well emission peak compared to the uncoated sample.
- Library of Congress Subject Headings: Optoelectronic devices.
- Library of Congress Subject Headings: Surface plasmon resonance.
- Keyword: surface plasmons
- Keyword: nanophotonics
- Keyword: quantum wells
Name: UNT Theses and DissertationsCode: UNTETD
Name: UNT LibrariesCode: UNT
- Rights Access: unt_strict
- Rights License: copyright
- Rights Holder: Vemuri, Padma Rekha
- Rights Statement: Copyright is held by the author, unless otherwise noted. All rights reserved.
- Thesis or Dissertation
- OCLC: 69647782
- Archival Resource Key: ark:/67531/metadc5584
- Degree Name: Master of Science
- Degree Level: Master's
- Degree Discipline: Engineering Technology
- Academic Department: Department of Engineering Technology
- Degree Grantor: University of North Texas