Index Catalog // ScholarsArchive@OSU

Characterization of BaCuSF Thin Films Grown in Excess Copper, by Pulsed Laser Deposition

Creator:: DeBlander, Evan F.
Abstract:: Thin films of the p-type semiconductor, barium copper sulfide fluoride (BaCuSF) were deposited using pulsed laser deposition. Similar p-type conductivity in Cu2O is caused by copper vacancies. Addition of copper dopant is proposed as a method for filling the copper vacancies in BaCuSF. The films are characterized to determine quality...
Resource Type:: Honors College Thesis

Creation of Western Oregon University weather ballooning program: GPS tracking, heating circuitry, and balloon filling procedure

Creator:: Schepige, Justin
Abstract:: The addition of a weather ballooning program at Western Oregon University creates research opportunities for the Science Department, allows for projects in professional development for in-service teachers, fosters a partnership with Oregon Space Grant, and creates another option for students participating in the Program for Undergraduate Research Experiences. As the...
Resource Type:: Honors College Thesis

Detecting ZnS Thin Films on Si Substrates using X-Ray Diffraction

Creator:: Howorth, Benjamin
Abstract:: The goal of this research is to determine whether x-ray diffraction (XRD) is a viable method for resolving ZnS thin films on Si substrates. The samples are ZnS thin films of thickness between 50nm and 100nm, on Si substrates that are 0.5mm thick. ZnS and Si have nearly identical lattice...
Resource Type:: Undergraduate Thesis

Determining thickness of zinc sulfide thin films through optical spectroscopy

Creator:: Prudell, Kathleen
Abstract:: A method has been developed to measure the thickness of ZnS thin films on Si using optical interference. Thin film optical interference fringes are dependent upon the thickness of the film, and for this reason the thickness can be determined by measuring reflectance spectrum of a thin film. A grating...
Resource Type:: Undergraduate Thesis

Development of a Brownian Motion Experiment for an Undergraduate Laboratory Course

Creator:: Wennstrom, Elena
Abstract:: A new class at Oregon State, PH 317: Experimental Physics, is designed to simulate a traditional laboratory research experience for undergraduate students. Several weeks of the class is devoted to Brownian motion experiments. Although this is a common topic for undergraduate lab classes, the experiment still needed some basic exploration...
Resource Type:: Undergraduate Thesis

Electrical Transport Measurements on the Alloy Sn₁-ₓCaₓSe

Creator:: Stahly, Joshua
Abstract:: Hall measurements can be made on the unstudied alloy, Sn₁-ₓCaₓSe to determine its electrical transport properties. The Sn₁-ₓCaₓSe samples were made by laser deposition into thin films and have a variable of calcium concentration x. These samples are approximately 250 nm in thickness, were grown at 366° C and are...
Resource Type:: Undergraduate Thesis

Investigating Grain Boundaries in BaCuS1-xSexF Using Impedance Spectroscopy

Creator:: Horgan, Briony
Abstract:: Impedance spectroscopy is a method of modeling materials with equivalent circuits to determine electrical properties, such as the resistivity and the dielectric constant. We explore impedance spectroscopy, both theoretically and experimentally through applying the method to samples of BaCuS1-xSexF. Grain boundary effects were dominant in the results, and although they...
Resource Type:: Undergraduate Thesis

Measurement and Modeling of Zinc Sulfide Thin Films using Ellipsometry and Reflection Spectroscopy : A Comparison of Optical Characterization Techniques

Creator:: Kratzer, Aaron and Kratzer, Aaron C.
Abstract:: Zinc sulfide thin films on silicon wafers were analyzed for layer thickness, refractive index, and absorption using reflection spectroscopy (RS), spectroscopic ellipsometry (SE), and modeling programs. RS and refractive index values from literature were used to model film thickness based on reflection and the SCOUT modeling program was used to...
Resource Type:: Undergraduate Thesis

Optical Analysis of Titania : Band Gaps of Brookite, Rutile and Anatase

Creator:: Lance, Ryan A.
Abstract:: The optical transition in high-fraction polymorphs of titania (TiO2) were investigated to determine the band gap behavior of the most common polymorphs—brookite, rutile, and anatase—the values of which are varied in the literature. The direct optical band gaps of brookite, rutile, and anatase, were determined to be 3.37(7)eV, 3.41(11)eV and...
Resource Type:: Undergraduate Thesis

Optical Characterization of Transparent Conductive Thin Films

Creator:: Tucker, Derek A.
Abstract:: The optical characterization of transparent conductive thin films is demonstrated. The basics of transparency and conductivity, as they relate to transparent conductor research, are explained. A functional model of the reflectance and transmittance of a sample film, including interference fringes, is derived from the Fresnel electric field amplitude coefficients. The...
Resource Type:: Honors College Thesis

ScholarsArchive@OSU

Characterization of BaCuSF Thin Films Grown in Excess Copper, by Pulsed Laser Deposition

Creation of Western Oregon University weather ballooning program: GPS tracking, heating circuitry, and balloon filling procedure

Detecting ZnS Thin Films on Si Substrates using X-Ray Diffraction

Determining thickness of zinc sulfide thin films through optical spectroscopy

Development of a Brownian Motion Experiment for an Undergraduate Laboratory Course

Electrical Transport Measurements on the Alloy Sn₁-ₓCaₓSe

Investigating Grain Boundaries in BaCuS1-xSexF Using Impedance Spectroscopy

Measurement and Modeling of Zinc Sulfide Thin Films using Ellipsometry and Reflection Spectroscopy : A Comparison of Optical Characterization Techniques

Optical Analysis of Titania : Band Gaps of Brookite, Rutile and Anatase

Optical Characterization of Transparent Conductive Thin Films

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