Title

Epitaxial Spin Coated Films

Presenter Information

John Tubbesing

Department

Chemistry

Major

Chemistry

Research Advisor

Switzer, Jay A., 1950-

Advisor's Department

Chemistry

Funding Source

Department of Energy (grant N. DE-FG02-08ER46518)

Abstract

Spin coating is a simple technique for applying thin films to flat substrates, most commonly used as a method of applying photoresists to silicon wafers for lithography. Here, single crystal substrates were used and produced single crystal-like films of cesium lead bromide perovskite, lead iodide, zinc oxide, and sodium chloride. Single crystal-like gold films electrodepositied on silicon wafers were used as the substrate for cesium lead bromide perovskite as a preliminary semiconductor device. Insights were gained into the nature of how spin coating works: That a supersaturated layer immediately next to the surface propagates, which allows for nucleation on the single crystal surface in such a way that the resulting crystals are oriented both in plane and out of plane. Such crystals can serve as semiconductors or as templates for other deposition techniques.

Biography

John is a 3rd year undergraduate in the chemistry department with plans to graduate in December of this year. John has been involved on campus with the W. T. Schrenk Society as well as CCF and the Aerial Swing Dance Club. He has been with the Dr. Switzer research group since May of 2017 where he completed one DURE and is published in the Journal of the American Chemical Society. John plans to continue with the group after graduation to pursue a doctorate in chemistry.

Presentation Type

OURE Fellows Final Oral Presentation

Document Type

Presentation

Location

Missouri Room

Presentation Date

16 Apr 2019, 11:00 am - 11:30 am

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Apr 16th, 11:00 AM Apr 16th, 11:30 AM

Epitaxial Spin Coated Films

Missouri Room

Spin coating is a simple technique for applying thin films to flat substrates, most commonly used as a method of applying photoresists to silicon wafers for lithography. Here, single crystal substrates were used and produced single crystal-like films of cesium lead bromide perovskite, lead iodide, zinc oxide, and sodium chloride. Single crystal-like gold films electrodepositied on silicon wafers were used as the substrate for cesium lead bromide perovskite as a preliminary semiconductor device. Insights were gained into the nature of how spin coating works: That a supersaturated layer immediately next to the surface propagates, which allows for nucleation on the single crystal surface in such a way that the resulting crystals are oriented both in plane and out of plane. Such crystals can serve as semiconductors or as templates for other deposition techniques.