Introduction to Quantum Dots and Solar Energy Conversion Devices
29 Dec 2014 | Online Presentations | Contributor(s): Bryan W. Boudouris
In this lecture, we describe the basics of what quantum dots are and how they can be applied to thin film photovoltaic technologies. In particular, we examine the unique properties of quantum dot materials and how these properties can be exploited by scientists and engineers to yield low-cost, light-weight solar modules capable of converting sunlight into electricity in a direct fashion. Additionally, the basics of solar cell characterization and light absorption are detailed and related to the band gap of quantum dot materials. Finally, the potential impact of solar technologies on the energy landscape of the United States is discussed.
nanoHUB-U Organic Electronic Devices: Scientific Overview
10 Dec 2014 | Online Presentations | Contributor(s): Bryan W. Boudouris
Organic Electronic Devices is a five week course that explores electronic materials that are defined broadly as carbon-based materials that are capable of transporting charge both in liquid-supported systems and in the solid state. Traditionally, two classes of organic electronic materials have emerged: 1) small molecules and 2) polymers. Each class has its own set of positive aspects, drawbacks, processing conditions, and the ultimate cost-effectiveness. Many of the fundamental transport physics between the two classes of materials remain the same, although some distinctions do exist.
Non-Conjugated Radical Polymers as an Emerging Class of Transparent Conductors for Flexible Polymer Thermoelectric Applications
21 Jul 2014 | Online Presentations | Contributor(s): Bryan W. Boudouris
Thermoelectric devices are capable of converting low-value waste heat energy into higher value electricity in a silent, direct manner and without the need for moving parts. As such, they present themselves as promising, environmentally-friendly energy conversion modules. Polymer-based thermoelectric devices are of particular interest due to their ability to be fabricated using low-cost, large-scale methodologies (e.g., roll-to-roll coating) and their compatibility with flexible, mechanically-robust substrates. ...
Design of Optoelectronically-active Polymers for Organic Photovoltaic Applications
08 Feb 2013 | Online Presentations | Contributor(s): Bryan W. Boudouris
Organic photovoltaic (OPV) devices are of great interest due to their promise of providing flexible, lightweight, and inexpensive alternatives to their currently-used inorganic counterparts. However, large-scale implementation of these modules has been hampered due to their relatively low power conversion efficiencies even in the highest-performing devices (PCE ~10%). Because the charge generation, separation, and collection processes in plastic solar cells occur on the nanoscale, the microstructure of the OPV active layer and the organic-metal interfaces are of great import. Here, we synthesize, characterize the nanoscalemorphology of, and implement novel macromolecules into OPV devices.