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Sulfur elemental maps from RRa P3HT/PCBM films.

Charge transport in amorphous polymer/fullerene mixtures Enrique D. Gomez, Pennsylvania State Univ University Park, DMR 1056199. Mixed phases are ubiquitous in organic solar cells, but the role of these mixed phases is not understood.

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Sulfur elemental maps from RRa P3HT/PCBM films.

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  1. Charge transport in amorphous polymer/fullerene mixturesEnrique D. Gomez, Pennsylvania State Univ University Park, DMR 1056199 • Mixed phases are ubiquitous in organic solar cells, but the role of these mixed phases is not understood. • We studied a model system, regiorandom poly(3-hexylthiophene) (RRa P3HT) and phenyl-C61-butyric acid methyl ester (PCBM), which is amorphous. • Using thin film transistors, we find that the electron mobility (transport) depends on the miscibility of components. • These results suggest that the electron mobility of mixed phases may be critical for device performance. Increasing me Sulfur elemental maps from RRa P3HT/PCBM films. Schematic representation of RRa P3HT/PCBM films.

  2. Introducing scientific research to preF studentsEnrique D. Gomez, Pennsylvania State Univ University Park, DMR 1056199 • Working hypothesis: exposure of undergraduate students to research early in their careers will motivate them to pursue advanced degrees. • Pre-First Year Science and Engineering Program (preF) provides preparatory courses for first-year calculus, physics, chemistry and English for pre-freshmen students from underrepresented groups. • PI extended this program to include an introduction to scientific research. • Energy-related research supported by this award was presented as an example. • A mixture of lectures and hands-on activities were utilized. . 2011 preF participants. Dr. Gomez spent three lectures introducing the students to scientific research at a university setting.

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