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Filtering by: Creator Smyth, W. D. Remove constraint Creator: Smyth, W. D. Advisor Ostroverkhova, Oksana Remove constraint Advisor: Ostroverkhova, Oksana Degree Name Bachelor of Science (B.S.) Remove constraint Degree Name: Bachelor of Science (B.S.)

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  • Low temperature microscopy of organic optoelectronic materials

    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:
    - tained including PL, of single crystals as well as donor-acceptor (D/A) spincast �lms, and images of

  • Optical Tweezer Trapping of Colloidal Polystyrene and Silica Microspheres

    Creator:
    Peters, Kyle C.
    Abstract:
    Optical trapping is a tool used throughout a wide variety of disciplines rang- ing from precisely probing and manipulating sub-micron organisms in biol- ogy to analyzing fundamental charge transfer in colloidal physics. This thesis presents research involving optical tweezer force measurements of polystyrene and silica microspheres. In addition, preliminary work...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    varying electric-field frequencies. 2S. H. Behrens and D. G. Grier. The charge of glass and silica

  • Modeling optical reflection and electric field intensity in organic semiconductor microcavities

    Creator:
    Munk, Rebecca
    Abstract:
    Organic semiconductors are a promising alternative to the traditional inorganic semiconductors, such as silicon. Organics are solution-processable, low-cost, sustainable, and have interesting optoelectronic properties. One such property is the formation of exciton-polaritons, quantum quasi-particles formed by an electron-hole pair in the semiconductor and a photon. This process can be induced...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    incidence. a) and b) show the electric field intensity for p-polarized light, while c) and d) show s

  • Organic Semiconductors : Incorporating Xylindein into (Opto)Electronic Devices

    Creator:
    Rath, Jeremy J.
    Abstract:
    This research investigates the electronic properties of a fungi-derived pigment, xylindein as a novel sustainable material for organic electronics. Xylindein molecules were characterized in solution and in film. Absorption spectra and (photo)luminescence spectra were taken at various excitation wavelengths. Xylindein’s molecular properties were computed with the Gaussian 09 software suite....
    Resource Type:
    Undergraduate Thesis
    Full Text:
    Chemical Physics, vol. 16, pp. 1719–1758, Jan. 2014. 4 [4] I. D. W. Samuel and G. A. Turnbull, “Organic

  • Detection of exciton polaritons in organic thin film TES-ADT

    Creator:
    Haas, David P.
    Abstract:
    Exciton polaritons are quasiparticles composed of a quantum superposition of matter and light states that arises from the coupling of a standing wave photon and an exciton. This research has two primary objectives: to design and fabricate a Fabry-Perot microcavity system in which to produce exciton polaritons; and to show...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    dilute anthradithiophene on top (ADT molecule spacing d), and then added a final layer of silver to

  • The interaction of bulk heterojunction donor/acceptor blends with polaritonic state creation in organic crystalline films

    Creator:
    Center, Reid
    Abstract:
    We explore the interactions between charge transfer exciton states (CTEs) and an optical microcavity by testing the effects that cavity resonance has on the CTEs and if CTEs can be coupled with a photon to create quasiparticles known as polaritons. Exciton polaritonics is becoming a booming area of research mainly...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    can be problematic for these D/A solar cells as this makes it difficult to separate

  • Study of Organic Semiconductors Using Time-Resolved Charge Measurements at the Microscale

    Creator:
    Wallace, Richard
    Abstract:
    Understanding charge transfer in organic semiconductors is important for developing devices like organic light emitting diodes and flexible electronics. Optical tweezers have been used in many disciplines for trapping, manipulating, and analyzing microscopic objects such as microspheres, micro-organisms, and other colloidal particles. Using optical tweezers, studies have measured the average...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    , Michael W Rowell, and Michael D McGehee. Polymer-based solar cells. Materials today, 10(11):28–33, 2007

  • Optoelectronic Properties of a Novel Fungi-derived Pigment

    Creator:
    Wiesner, Cameron
    Abstract:
    In industry, there is considerable interest in finding sustainable, renewable materials for use in electronic devices. Pigments derived from spalting fungi are of particular interest due to their longevity in diverse environmental conditions. The focus of my project was to characterizethe properties of a novel, fungi-derived pigment, and to discover...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    total length of 1mm between and along each electrode. The length of the electrode ​d​ is considered

  • Photodimerization of Organic Semiconductors in the Strong Coupling Regime

    Creator:
    Puro, Richard
    Abstract:
    Organic semiconducting materials have emerged in the last few decades as viable alternatives to inorganics in broad applications from field effect transistors to LEDs to solar cells. Organics provide many benefits over inorganics such as flexibility, sustainability, and reduced cost. However, these materials are more susceptible to degradation in the...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    in Figure 1.9. Fig. 1.9. Model for the average intermolecular spacing (d) of TIPS-Pn molecules

  • 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