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Photoinduced Charge Transfer at Metal Oxide/Oxide Interfaces Prepared with Plasma Enhanced Atomic Layer Deposition


Abstract LiNbO3 and ZnO have shown great potential for photochemical surface reactions and specific photocatalytic processes. However, the efficiency of LiNbO3 is limited due to recombination or back reactions and ZnO exhibits a chemical instability in a liquid cell. In this dissertation, both materials were coated with precise thickness of metal oxide layers to passivate the surfaces and to enhance their photocatalytic efficiency. LiNbO3 was coated with plasma enhanced atomic layer deposited (PEALD) ZnO and Al2O3, and molecular beam deposited TiO2 and VO2. On the other hand, PEALD ZnO and single crystal ZnO were passivated with PEALD SiO2 and Al2O3.

Metal oxide/LiNbO3 heterostructures were immersed in aqueous AgNO3 solutions and illuminated with ... (more)
Created Date 2016
Contributor Kaur, Manpuneet (Author) / Nemanich, Robert (Advisor) / Dey, Sandwip (Committee member) / Crozier, Peter (Committee member) / Chan, Candace (Committee member) / Arizona State University (Publisher)
Subject Materials Science
Type Doctoral Dissertation
Extent 242 pages
Language English
Note Doctoral Dissertation Materials Science and Engineering 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis