Polarization Modulated-Infrared Reflectance Absorbance Spectroscopy Of Orientation And Binding Mode Of Pentafluorobenzyl Acid Modifiers On Indium Zinc Oxide

Persistent Link:
http://hdl.handle.net/10150/556967
Title:
Polarization Modulated-Infrared Reflectance Absorbance Spectroscopy Of Orientation And Binding Mode Of Pentafluorobenzyl Acid Modifiers On Indium Zinc Oxide
Author:
Lachance, Zachary Thomas
Issue Date:
2015
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Understanding the orientation of small organic acid modifiers on metal oxide electrodes is important in advancing the field of organic photovoltaics (OPVs). In this work, the orientation of a group of these small organic acid modifiers will be investigated on indium zinc oxide (IZO). Polarization modulation-infrared reflectance-absorbance spectroscopy (PM-IRRAS) is the primary technique used to determine these orientations. In order to determine orientations from PM-IRRAS data, other chemical and physical properties of the modifiers, such as density and surface coverage, must be experimentally determined. Neutral buoyancy is used to determine the density of the modifiers, while X-ray photoelectron spectroscopy (XPS) is used to estimate surface coverage of these modifiers on IZO. These techniques are also used to determine binding mode of these modifiers on IZO. The tilt angles (θ) were found to be 50 ± 3°, 64 ± 2°, and 43 ± 3° for F₅BnPA, F₅BnCA, and F₅BnHA, respectively, meaning that the phenyl ring in F₅BnHA is more perpendicular to the surface while the phenyl ring in F₅BnCA more parallel to the surface. All three modifiers were also found to bind to IZO in a bidentate manner. In contrast, F₅BnSA etches away significant portions of the IZO substrate.
Type:
text; Electronic Thesis
Keywords:
IZO; Orientation; PM-IRRAS; Chemistry; Binding Modes
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Chemistry
Degree Grantor:
University of Arizona
Advisor:
Pemberton, Jeanne E.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titlePolarization Modulated-Infrared Reflectance Absorbance Spectroscopy Of Orientation And Binding Mode Of Pentafluorobenzyl Acid Modifiers On Indium Zinc Oxideen_US
dc.creatorLachance, Zachary Thomasen
dc.contributor.authorLachance, Zachary Thomasen
dc.date.issued2015en
dc.publisherThe University of Arizona.en
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en
dc.description.abstractUnderstanding the orientation of small organic acid modifiers on metal oxide electrodes is important in advancing the field of organic photovoltaics (OPVs). In this work, the orientation of a group of these small organic acid modifiers will be investigated on indium zinc oxide (IZO). Polarization modulation-infrared reflectance-absorbance spectroscopy (PM-IRRAS) is the primary technique used to determine these orientations. In order to determine orientations from PM-IRRAS data, other chemical and physical properties of the modifiers, such as density and surface coverage, must be experimentally determined. Neutral buoyancy is used to determine the density of the modifiers, while X-ray photoelectron spectroscopy (XPS) is used to estimate surface coverage of these modifiers on IZO. These techniques are also used to determine binding mode of these modifiers on IZO. The tilt angles (θ) were found to be 50 ± 3°, 64 ± 2°, and 43 ± 3° for F₅BnPA, F₅BnCA, and F₅BnHA, respectively, meaning that the phenyl ring in F₅BnHA is more perpendicular to the surface while the phenyl ring in F₅BnCA more parallel to the surface. All three modifiers were also found to bind to IZO in a bidentate manner. In contrast, F₅BnSA etches away significant portions of the IZO substrate.en
dc.typetexten
dc.typeElectronic Thesisen
dc.subjectIZOen
dc.subjectOrientationen
dc.subjectPM-IRRASen
dc.subjectChemistryen
dc.subjectBinding Modesen
thesis.degree.nameM.S.en
thesis.degree.levelmastersen
thesis.degree.disciplineGraduate Collegeen
thesis.degree.disciplineChemistryen
thesis.degree.grantorUniversity of Arizonaen
dc.contributor.advisorPemberton, Jeanne E.en
dc.contributor.committeememberPemberton, Jeanne E.en
dc.contributor.committeememberArmstrong, Neal R.en
dc.contributor.committeememberMonti, Oliveren
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