Index Catalog // ScholarsArchive@OSU

Photophysics of organic semiconductors at the nanoscale

Creator:: Grollman, Rebecca R.
Abstract:: Organic semiconductors are used in a wide variety of applications including transistors,solar cells, and light emitting diodes. These materials are solution-processable,low cost, and tunable. Many successful organic optoelectronic materials utilizeblends of several types of molecules (such as donors and acceptors) in order topromote charge generation. As blends are an inherently...
Resource Type:: Dissertation

Exploration of charge-transfer exciton formation in organic semiconductors through transient photoconductivity measurements

Creator:: Neunzert, Afina
Abstract:: This project investigated transient photoconductivity in organic donor-acceptor (D-A) systems, where a flourinated anthradithiophene, ADT-TES-F, acts as the donor. Various acceptor molecules were used, with different sidegroups, and different HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) energy level offsets relative to the acceptor. Thin film composites...
Resource Type:: Undergraduate Thesis
Full Text:: . Rose, J. E. Anthony, M. M. Haley, and O. Ostroverkhova. Formation of the donor-acceptor charge

A Study of Charging Behaviors in Organic Semiconductors using Optical Trapping

Creator:: Founds, Graham M.
Abstract:: We measure the charging and discharging of two organic materials, PCBM and ADT-TES-F. These materials are studied through the noncontact method of particle trapping known as Optical Tweezers, where an IR laser is used to constrain the motion of a coated or noncoated silica sphere while its positional data is...
Resource Type:: Undergraduate Thesis
Full Text:: microspheres are placed in a polar, aqueous suspension environment, such as Milli-Q filtered water. The

Electronic and Optical Properties of Organic Semiconductors : Experiment and Simulation

Creator:: Johnson, Brian
Abstract:: The continued development of organic semiconductor materials relies on an understanding of the relationship between optoelectronic properties, molecular structure, and molecular interaction. Several detailed studies of electronic properties in functionalized polyacene materials are presented. A computational model which allows the extraction of charge generation and transport properties from experimental data...
Resource Type:: Dissertation
Full Text:: accurate series expansion: kd (a,E, θ) = exp (−2q/a) [ 1 + 2βq (1 + cosθ) + β2q (q − a) (1 + cosθ)2

Improving the Photostability and Recovery of Organic Semiconductors

Creator:: Tollefsen, Ryan J.
Abstract:: This work aims to broaden use of the organic semiconductor pentacene (Pn) by means of improving its oxidation and photodimerization stability. In particular, we study the photophysical properties of functionalized Pn derivatives with side groups R in amorphous thin film, referred to as Pn-R-F8 when fluorinated. Using the optics experiments...
Resource Type:: Honors College Thesis
Full Text:: secondary optical axis which houses a 355 nm dual-chip Q-switched frequency-tripled Nd:YAG laser from

Tabletop fusion reactors : construction and testing of a demonstration inertial electrostatic confinement fusor

Creator:: Holler, Logan R.
Abstract:: Nuclear fusion reactors comprise a significant field of study due to their potential to provide a limitless, clean, and sustainable source of energy. The inertial electrostatic confinement fusor is a type of fusion-generating device that accelerates deuterium gas to the conditions required for fusion. The goal of this research was...
Resource Type:: Honors College Thesis
Full Text:: versus the total energy produced is called the fusion energy gain factor, normally denoted as Q. It is

Light-matter interactions : from the photophysics of organic semiconductors to high spatial resolution optical tweezer-controlled nanoprobes

Creator:: Kendrick, Mark J.
Abstract:: Studies of light-matter interactions in organic semiconductors and in optical tweezer trapping of nanoparticles are presented. In the research related to organic semiconductor materials, a variety of novel materials and their composites have been characterized, and physical mechanisms behind their optoelectronic properties have been established. Three novel functionalized hexacene derivatives...
Resource Type:: Dissertation
Full Text:: -field-assisted PL quenching (Q) at 100 kV/cm in pristine ADT-TES-F donor films (LUMO = 0) and in

Search for Non-Einsteinian Polarization Modes in the Gravitational-Wave Background using NANOGrav’s 12.5 Year Data Set

Creator:: Laal, Nima
Abstract:: I led a collaborative project involving a search for an evidence of a gravitational wave background (GWB) with all the spatial correlations allowed by general metric theories of gravity using NANOGrav’s 12.5 year data set. The search found no substantial evidence in favor of the existence of such correlations. The...
Resource Type:: Masters Thesis
Full Text:: . Vigeland, Haley M. Wahl, Caitlin A. Witt. TABLE OF CONTENTS

Photostability of organic semiconductors : from bulk to nanoscales

Creator:: Quist, Nicole Arianne
Abstract:: Organic semiconductors have attracted considerable attention due to their applications in low-cost, solution-processable (opto)electronic devices. An important class of high-performance organic semiconductors is pentacene derivatives, which exhibit high charger carrier mobilities in field-effect transistors and ultrafast singlet fission in photovoltaic devices. These derivatives have served as benchmark materials for systematic...
Resource Type:: Dissertation

In silico screening of nanoporous materials for gas sensing and separation

Creator:: Gantzler, Nickolas
Abstract:: The utility of high-throughput, computational screening has become an invaluable asset to the field of materials science. In the hierarchy of computational methods, the most accurate methods are often the most computationally expensive. However, as both the efficiency and fidelity of numerical techniques advance, high-quality screening of large materials datasets...
Resource Type:: Dissertation
Full Text:: selectivity (ratio of permeability of Xe to permeability of Kr) SmemXe{Kr “ pDsXeHXeq{pDsKrHKr q of Ni(PyC)2

ScholarsArchive@OSU

Photophysics of organic semiconductors at the nanoscale

Exploration of charge-transfer exciton formation in organic semiconductors through transient photoconductivity measurements

A Study of Charging Behaviors in Organic Semiconductors using Optical Trapping

Electronic and Optical Properties of Organic Semiconductors : Experiment and Simulation

Improving the Photostability and Recovery of Organic Semiconductors

Tabletop fusion reactors : construction and testing of a demonstration inertial electrostatic confinement fusor

Light-matter interactions : from the photophysics of organic semiconductors to high spatial resolution optical tweezer-controlled nanoprobes

Search for Non-Einsteinian Polarization Modes in the Gravitational-Wave Background using NANOGrav’s 12.5 Year Data Set

Photostability of organic semiconductors : from bulk to nanoscales

In silico screening of nanoporous materials for gas sensing and separation

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