MIT Libraries homeMIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • MIT Libraries
  • MIT Theses
  • Theses - Dept. of Physics
  • Physics - Bachelor's degree
  • View Item
  • DSpace@MIT Home
  • MIT Libraries
  • MIT Theses
  • Theses - Dept. of Physics
  • Physics - Bachelor's degree
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Electron transport in lead selenide nanocrystal arrays

Author(s)
Schriver, Maria C
Thumbnail
DownloadFull printable version (1.870Mb)
Alternative title
Electron transport in PbSe nanocrystal arrays
Other Contributors
Massachusetts Institute of Technology. Dept. of Physics.
Advisor
Marc Kastner.
Terms of use
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582
Metadata
Show full item record
Abstract
I have investigated electrical properties of arrays of lead selenide (PbSe) nanocrystals (NC's) of approximately 6nm diameter. The films become substantially more conducting when annealed at 400K, although no chemical changes of the capping layer occur at this low temperature. There is no evidence based on TEM images of annealed and unannealed films that the interparticle spacing changes at 400K. The dependence of the conductance on the voltage applied to a gate separated from the sample by 350nm of SiO2 was also measured. At 77K and 150K, a U-shaped curve is observed with a minimum in conductance near zero gate voltage, indicating that both electrons and holes are injected. At 294K, the conductance falls monotonically with increasing gate voltage, indicating injection of holes only. I calculate the electron and hole mobilities, [mu]e and [mu]h at 77K and 150K and find effective mobilities 10 orders of magnitude smaller than those of bulk PbSe at 77K.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2005.
 
Includes bibliographical references (p. 49-50).
 
Date issued
2005
URI
http://hdl.handle.net/1721.1/32911
Department
Massachusetts Institute of Technology. Dept. of Physics.
Publisher
Massachusetts Institute of Technology
Keywords
Physics.

Collections
  • Physics - Bachelor's degree
  • Physics - Bachelor's degree

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries homeMIT Libraries logo

MIT Libraries navigation

HomeSearchHours & locationsBorrow & requestResearch supportAbout the Libraries
MIT
Massachusetts Institute of Technology77 Massachusetts AvenueCambridge MA 02139-4307
All items in DSpace@MIT are protected by original copyright, with all rights reserved, unless otherwise indicated. Notify us about copyright concerns.