Author(s)

Tyler J. Hurlburt

Graduation Year

2013

Date of Thesis Acceptance

Spring 5-8-2013

Major Department or Program

Chemistry

Advisor(s)

Steven Hughes

Abstract

Nanocrystals are a type of matter with properties between those of individual molecules and the bulk semiconductor. Because the size of nanocrystals is in the nanometer scale, they can demonstrate quantum confinement, where the size of the bandgap is determined by the size of the particle itself. This means that the wavelength of the light emitted by these nanocrystals depends on the size of the nanocrystals. One of the main applications of these nanocrystals is their use in creating white light for LEDs. Much of the previously synthesized and studied nanocrystals for these applications are lead and cadmium containing compounds which come with very strong environmental and health risks. One method to get around the use of these toxic heavy metals is to use ternary (or even quaternary) I-III-VI nanocrystals (such as CuInS2, CuGaS2, AgInS2, AgGaS2, and their respective selenium compounds). We look to synthesize several different I-III-VI nanocrystals for uses in down-shifting of light for LEDs.

Page Count

51

Subject Headings

Wavelengths, Semiconductor nanocrystals -- Research -- Core-shell, LED lighting, Nanocrystals -- CIS -- CuInS2, Nanocrystals -- AIS -- AgInS2, Nanocrystals -- AGS -- AgGaS2, Nanocrystals -- Synthesis, Semiconductor nanocrystals -- optical properties, Whitman College 2013 -- Dissertation collection -- Chemistry Department

Permanent URL

http://hdl.handle.net/10349/1219

Document Type

Public Accessible Thesis

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Included in

Chemistry Commons

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