1. Pathways to a New Efficiency Regime forOrganic Solar CellsSean E. Shaheen, University of Denver, DMR 1006930 Organic photovoltaic devices (OPVs) have reached solar power conversion efficiencies of 10+%, as demonstrated by several groups and companies around the world. However, in order for OPVs to potentially impact the renewable energy landscape, significant gains in efficiency must still be made. This work describes at a fundamental level how three material characteristics can be altered in order to lead to efficiencies of 20+%. Each characteristic presents a pathway for achieving this goal, and taken together they provide a comprehensive set of guidelines for the development of new, high efficiency OPV materials. 3-dimension plot of achievable efficiency as a function of two important device material parameters, ∆ and αCT. L.J.A. Koster, S.E. Shaheen, J.C. Hummelen, Advanced Energy Materials, DOI 10.1002/aenm.201200103 (2012).

2. Pathways to a New Efficiency Regime forOrganic Solar CellsSean E. Shaheen, University of Denver, DMR 1006930 The PI Shaheen was present as an invited speaker at the American Institute of Physics Industrial Physics Forum 2012: Capacity Building for Industrial Physics in the Developing & Emerging Economies. There he led discussions for students and researchers at breakout sessions on Solar Energy and on Capacity Building in Africa. The sessions included students and researchers from 35 different countries. The discussions focused on identifying the complex barriers to conducting research and promoting the development of solar energy science and technology in developing regions of the world. Photographs of the “Solar Energy” and “Capacity Building in Africa” breakout sessions at the AIP Industrial Physics Forum 2012.