Index Catalog // ScholarsArchive@OSU

Creator:: Grimm, Sam
Abstract:: Crystal morphology and dimensionality of single-crystal semiconducting materials can have dramatic effects on the optical and electrical properties. Organic photovoltaic (OPV) materials and ﬂuorinated graphene folds are two materials that show these dependencies. Anthradithiophene (ADT), is an OPV that can be functionalized with different side groups to form diﬀerent crystal...
Resource Type:: Undergraduate Thesis
Full Text:: . Additional thanks goes to Keshab Paudel for making the OPV devices and Peijie Ong for creating the

Creator:: Busche, Jacob A.
Abstract:: A method for measuring the (dis)charging dynamics of organic semiconductors with single-electron resolution in multiple environments is developed using optical tweezers. A 1μm silica bead was coated with either a pristine organic semiconductor or an electron donor-acceptor blend, trapped using optical tweezers, and driven with an oscillating electrical driving force....
Resource Type:: Honors College Thesis
Full Text:: Keshab Paudel for his wisdom. Finally, I would like to thank Mattson Thieme, Rene Zeto, and Mitch Senger

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

Creator:: Thieme, Mattson
Abstract:: We present a report on a new capability for low temperature microscopy of organic optoelectronic semiconductor materials. We may now perform photoluminescence (PL) and conductivity measurements as a function of temperature on a microscopic level. Testing confirmed the setup's ability to support microscopic measurements at pressures of 10^-6 Torr and...
Resource Type:: Undergraduate Thesis
Full Text:: progression as a physicist, a writer, and an individual. I also thank her for introducing me to Dr. Keshab

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:: and Keshab Paudel for help with experiments, theory, and conversation. You made our group an awesome

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
Full Text:: fun place to be. In particular, I would like to thank Dr. Brian Johnson and Dr. Keshab Paudel for

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

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