Graduate Thesis Or Dissertation

 

Reaction Pathways of Oxo-Hydroxo Group 5 Clusters to Metal Oxide Thin Films Public Deposited

Analytics

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/5x21tm139

Descriptions

Attribute NameValues
Creator
Abstract
  • Oxo-hydroxo Group 5 metal clusters are an untapped resource to study and advance aqueous solution processing of metal oxide thin films. The tetramethylammonium (TMA) hexatantalate salt (TMA6[H2Ta6O19]) yields dense Ta2O5 films (~95% of the bulk ß-Ta2O5 density) with atomically smooth surfaces (<4 Å root mean square surface roughness). This same precursor produces single-digit-nanometer thick films at low solution concentrations. The diprotonated cluster TMA6[H2Ta6O19] cluster produces films much different from those of the triprotonated analog TMA5[H3Nb6O19]. One additional proton in [H3Nb6O19]5- yields rougher Nb2O5 films with nanoparticles at the surface. A temperature-programmed desorption study of TMA6[H2Ta6O19] elucidates the reaction pathway of precursor to solid oxide. Lastly, the acid-base, ion-exchange chemistry of the basic [H2Ta6O19]6- precursor enables a path to produce amorphous tantalum oxide films at temperatures as low as 200 °C.
License
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Rights Statement
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Submitted by Ryan Mansergh (mansergr) on 2017-07-06T06:22:26ZNo. of bitstreams: 1ManserghRyanH2017.pdf: 10494098 bytes, checksum: ce746f7738533bff25e822f72a53400c (MD5)
  • description.provenance : Approved for entry into archive by Steven Van Tuyl(steve.vantuyl@oregonstate.edu) on 2017-08-01T23:36:29Z (GMT) No. of bitstreams: 1ManserghRyanH2017.pdf: 10494098 bytes, checksum: ce746f7738533bff25e822f72a53400c (MD5)
  • description.provenance : Approved for entry into archive by Darcy Miller(darcy.miller@oregonstate.edu) on 2017-07-14T19:08:02Z (GMT) No. of bitstreams: 1ManserghRyanH2017.pdf: 10494098 bytes, checksum: ce746f7738533bff25e822f72a53400c (MD5)
  • description.provenance : Made available in DSpace on 2017-08-01T23:36:29Z (GMT). No. of bitstreams: 1ManserghRyanH2017.pdf: 10494098 bytes, checksum: ce746f7738533bff25e822f72a53400c (MD5) Previous issue date: 2017-06-19
Embargo reason
  • Existing Confidentiality Agreement
Embargo date range
  • 2017-11-08 to 2018-08-01

Relationships

Parents:

This work has no parents.

In Collection:

Items

Thumbnail Title Date Uploaded Visibility Actions
ManserghRyanH2017.pdf 2017-11-08 Public