Armstrong, Us-china 2009

University of Arizona: Research and Opportunities

Center for Interface Science: Solar Electric Materials (CIS:SEM) Vision: CIS:HSEM will become a national resource for: i) understanding and controlling the interface science underlying solar energy conversion technologies based on organic and organic-inorganic hybrid materials; ii) inspiring, recruiting and training future scientists and leaders in the basic science of solar electric energy conversion. RESEARCH PLAN AND DIRECTIONS Characterize & control of composition and structure of interfaces between nanostructured organic semiconductors and oxides or metals. Interfaces limit the energy conversion efficiencies and scale-up of Generation III solar cells. New materials and characterization methods will enable scientific understandings that lead to future low-cost solar-electric energy conversion technologies with unprecedented performance .

Center for Interface Science: Solar Electric Materials (CIS:SEM)

Partnering institutions and co-P.I.’s:

Neal Armstrong Jeanne Pemberton S. Scott Saavedra Dominic McGrath Jeff Pyun Oliver Monti Bob Norwood Nasser Peyghambarian

Bernard Kippelen Seth Marder Jean-Luc Bredas Samual Graham

Christine Luscombe David Ginger

Antoine Kahn David Ginley, Dana Olson, Joseph Berry

•New oxide/metal contact materials and new modifiers for those interfaces •Characterization and control of electrical properties at nanometer length scales; •characterization of frontier orbital energy offsets; •nanotexturing of the active layers in OPVs to increase cell efficiency

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V % ηN≈ 3-4 (AM 1.5) O N

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Laboratory for Electron Spectroscopy and Surface Analysis (LESSA)

W.M. Keck Center for Surface and Interface Imaging

Neal R. Armstrong Interface Science of OPV and OLED Materials; Development of New Chemical Sensor Platforms

Craig A. Aspinwall Development of Novel Methodologies for Investigations of Cellular Signal Transduction Sensors, Instrumentation

Jeanne E. Pemberton Chemistry at Interfaces Important in Molecular Electronic and Photonic Devices, Chromatography, Biosurfactants and Organized Assemblies, and Environmental Systems

S. Scott Saavedra Bioanalytical Chemistry / Surface Spectroscopy / Waveguides and Interfacial Optics / Chemical and Biological Sensors / Biomolecular Films and Biomaterials / Solar Energy Conversion Vicki H. Wysocki Bioanalytical Mass Spectrometry/Peptide and Protein Sequencing/ Ion-Surface Collisions for Surface Characterization of Organic Thin Films/Biodefense/Mosquito Proteomics and Metabolomics

M. Bonner Denton Analytical Spectroscopy/Mass Spectrometry/Laboratory Automation

The “sensing vision” for OLED/OPV platforms Lab-on-Chip Refractometry/Spectrometry S. Scott Saavedra, Craig Aspinwall NIH, NSF support

Need ΔR.I./Γads. ≈ +/- 10-5 ??

A common problem with OLEDs becomes an advantage for the development of new sensor platforms

Significant fractions of OLED emission are lost into WG or “Substrate” modes

New diffraction grating in-couplers via microcontact molding of CdSe nanocrystals

Shallcross et al. ACS Nano, October 2009

Students/collaborators/research support

Michael Brumbach (Sandia Labs); Niranjani Kumaran Judy Jenkins, Michael Liao, Gordon MacDonald, (Intel); Dana Alloway (Concord Univ. W.V.) Diogenes Placencia, Weining Wang, Mario Malvavon, Clayton Shallcross; Alex Veneman, Amy Graham, Dan Huebner, Derek Manglesdorf, Kai-Lin Ou (Kento), Diogenes Placencia; Weining Wang, Erin Ratcliff, Jeremy Gantz, Erin Ratcliff, Andrea Munro, Alex Andrea Munro, Mariola Macech, Jeff Head,Shallcross, Judy Jenkins, Veneman, David Manglesdorf, Clayton Mario Malvavon, Brian Zacher,Jeff Dan Huebner, Derek Mariola Macech, Head Manglesdorf, David Manglesdorf, Delvin Tadytin Dom McGrath, Jeff Pyun, Scott Saavedra, Sergio Paniagua (GTech); Peter Hotchkiss (GTech); Seth Bob Norwood, Jeanne Pemberton Marder; Bernard Kippelen, Jean-Luc Bredas, et al.