WFU Physics Colloquium
TITLE: “Photons, electrons, and phonons; OLED, OFET, and OPV”
SPEAKER: Professor Laurie E. McNeil
Department of Physics and Astronomy
University of North Carolina at Chapel Hill
Chapel Hill, NC
TIME: Wed. Sep. 27, 2017 at 4:00 PM
PLACE: George P. Williams, Jr. Lecture Hall, (Olin 101)
There will be a reception with refreshments at 3:30 PM in the lounge. All interested persons are cordially invited to attend.
ABSTRACT
First discovered at the beginning of the 20th century but still only partially understood today, organic semiconductors combine the electrical and optical properties typical of inorganic semiconductors with properties such as flexibility, low cost, and structural tunability via chemical modification. They are of significant interest due to their potential for opto-electronic applications such as displays, photosensors and solar cells. Charge transfer compounds, which are made of two or more organic molecules in which one species acts as a donor of electric charge and the other as an acceptor, could provide new properties or improved performance to increase the range of application of organic semiconductors. I will discuss how optical measurements such as resonant Raman scattering and transient absorption, when combined with numerical calculations, can elucidate the physics of the subtle interplay of interactions that is critical to applications of these materials in 21st-century opto-electronic devices.