Radiation Detection Using a Semiconducting Nanocrystal Detector Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/5138jj28d

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Nanostructured material has been projected to be the next generation material for the detection of ionizing radiation due to the uniquely superior physical processes associated with charge creation and by virtue of their optoelectronic tunablility. Semiconducting Nanocrystal (NC) detectors, by nature of their low band gap material, low fabrication costs, high densities, and direct radiation-to-charge formation (unlike scintillators) are poised to capture the best resolution of all NC radiation detectors. If adequately developed, semiconducting NC detectors could have a substantial impact in all areas where radiation spectroscopy is needed. Proof of concept detectors were shown to achieve resolution comparable to that of High Purity Germanium (HPGe) while operating at room temperature. However, all deposition processes performed (drop casting, spin casting, dip casting) even with various treatments (layer-by-layer treatment, ligand exchange, addition of a conductive polymer) have resulted in a material with structural defects and inhomogeneities which in turn create poor conditions for the mitigation of charge carriers, and ultimately thicknesses for the active detection medium have not surpassed the millimeter scale. In this thesis, a variety of Lead Selenide (PbSe) NC based radiation detectors were fabricated using a chemical synthesis and drop-cast deposition method, however, none were able to show sensitivity to radiation due to a low signal to noise ratio.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Keyword
Subject
Rights Statement
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2016-06-15T18:48:06Z (GMT) No. of bitstreams: 2 license_rdf: 1379 bytes, checksum: da3654ba11642cda39be2b66af335aae (MD5) RinaldiDavidW2016.pdf: 15435410 bytes, checksum: 9f8eaef0ba63a446227db013fd5df2de (MD5)
  • description.provenance : Made available in DSpace on 2016-06-16T19:56:40Z (GMT). No. of bitstreams: 2 license_rdf: 1379 bytes, checksum: da3654ba11642cda39be2b66af335aae (MD5) RinaldiDavidW2016.pdf: 15435410 bytes, checksum: 9f8eaef0ba63a446227db013fd5df2de (MD5) Previous issue date: 2016-06-07
  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2016-06-16T19:56:39Z (GMT) No. of bitstreams: 2 license_rdf: 1379 bytes, checksum: da3654ba11642cda39be2b66af335aae (MD5) RinaldiDavidW2016.pdf: 15435410 bytes, checksum: 9f8eaef0ba63a446227db013fd5df2de (MD5)
  • description.provenance : Submitted by David Rinaldi (rinaldid@oregonstate.edu) on 2016-06-10T18:13:06Z No. of bitstreams: 2 license_rdf: 1379 bytes, checksum: da3654ba11642cda39be2b66af335aae (MD5) RinaldiDavidW2016.pdf: 15435410 bytes, checksum: 9f8eaef0ba63a446227db013fd5df2de (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items