Electronic Transport in Nanoengineered Materials

September 16, 2010 to September 18, 2010

We are welcoming contributions-- both oral presentations and posters-- to the workshop, "Electronic Transport in Nanoengineered Materials," which will take place on September 16-18 at the University of Chicago. (Please write to the organizers below).

This workshop will cover different aspects of the bottom-up design of electronic materials from assemblies of metal and semiconductor nanocrystals, drawing on existing expertise in organic and disordered conductors. These nanocrystalline solids combine unusal optical, electronic, magnetic and thermal properties. Potential applications include photodetectors, LED, solar-cells, thermoeletric and printable electronics.

Important challenges involve the understanding, and also the improvement of electronic transport in these matverials. The theoretical framework involves metal-insulator transitions, transport through disordered localized states and percolation phenomena. Thus, an interdisciplinary approach spanning from synthetic chemistry to condensed matter physics will be required. Progress in the field requires increased communication between the physics community studying these phenomena either theoretically or using model systems, and the materials chemistry community.

The research program in this area at the NSF-funded MRSEC at the James Franck Institute at the University of Chicago provides the context for the workshop. Guyot-Sionnest and Talapin are developing novel synthetic approaches and studying the electronic properties of metallic and semiconducting nanocrystal assemblies. Jaeger is exploring transport mechanisms and percolation in ordered metal nanoparticle arrays and Gruzberg is working on the theoretical aspects of charge transport in disordered electronic systems.

The goal of the workshop is to bring together scientists working in different areas related to this topic and to promote the exchange of ideas between different research communities.

Organizers

Dmitri Talapin dvtalapin@uchicago.edu
Philippe Guyot-Sionnest / pgs@uchicago.edu
Ilya Gruzberg gruzberg@uchicago.edu
Heinrich Jaeger / h-jaeger@uchicago.edu

Final Program

Thursday, September 16

9:30am  Breakfast
10:30   Opening Remarks, P. Guyot-Sionnest, UC
10:40-11:30  D. TalapinUC, "Electronic transport in nanocrystal assemblies: a chemist's perspective"
11:40-12:20  D. Frisbie, U. Minnesota, "High Capacitance Electrolyte Gates and their Application to Transport in Nanocrystal Thin Films"
12:30  Lunch
1:55-2:00  Opening Remarks
2:00-2:40  M. Bawendi, MIT, "Elements of charge and excitation transport in close packed nanocrystal quantum dot films"
2:50-3:30  D. Vanmaekelbergh, U. Utrecht, "Electron transport in a quantum-dot solid: Mott, Efros-Shklovsii, and We"
3:40-4:20  M. Law, UC Irvine, "Versatile and Robust Semiconductor Nanocrystal Solids for Electronics"
4:30  Coffee Break
5:00-5:20  E. Weiss, Northwestern, "Charge separation and recombination at the quantum dot-molecule interface"
5:25-5:45  H. Liu, UC, "Mott and Efros-Shklovskii Variable Range Hopping in CdSe Quantum Dot Films"
5:50-6:10  M. Drndic, U. Pennsylvania, "Nanogap Quantum Dot Photoconductivity"
6:15-6:30  Z. Kafafi, NSF-DMR, Opportunities in interdisciplinary/multidisciplinary nanoscience at NSF
7:00  Dinner

Friday, September 17

9:25-9:30  Opening Remarks
9:30-10:10  T. Sargent, U of Toronto, "Optoelectronic devices based on colloial quantum dot films: Light Sensors and Photovoltaics"

10:20-11:00  V. Bulovic, MIT, "Electrical Excitation of Colloidal Quantum Dot Thin Films"
11:10-11:50  C. Murray, University of Pennsylvania, "Charge and spin transport in binary nanocrystal superlattice thin films and membranes"
12:00 Lunch
1:30-2:10  K. Efetov, U. of Bochum, "Electronic transport in Granular Systems"
2:20-3:00  A. Shakouri, UC Santa Cruz, "Thermoelectric transport in nanoengineered materials"
3:10-3:50  B. Shklovskii, U. of Minnesota, "The World's Thinnest Capacitor"
4:00  Coffee break
Posters
7:00pm Dinner

Saturday, September 18

9:25-9:30am  Opening remarks
9:30-10:10  H. Jaeger, UC, "Tunneling transport through nanoparticle arrays"
10:20-11:00  D. Morr, UIC, "Non-equilibrium Transport in Dissipative Systems"
11:10-11:50  A. Finkelstein, Texas A&M, "Thermoelectric transport: calculation of the Nernst effect"
12:00  Lunch
1:05-1:25  T. Mentzel, MIT, "Charge transport in films of nanocrystal quantum dots: activated hopping versus variable-range hopping"
1:30-1:50  A. Dhirani, U. Toronto, "Quantum effects in self-assembled gold nanoparticle films near the metal-insulator transition"
1:55-2:15  I. Beloborodov, CSU Northridge, "Superconductive Nanosolids"
2:20-2:40  A. Glatz, ANL, "Superconducting nanotextures in thin superconducting films,"
2:45-3:05   P. Reddy, U. Michigan, "Charge and Enegy Transport in Nanoscale Molecular Junctions,"
3:10-3:30  R. Winkler, NIU, "Magneto-Transport and Spin-Orbit Coupling in Low-Dimensional Semiconductor Hole Systems"
4:00  Closing remarks

Posters

  1. Effects of Surface Chemistry on Nonlinear Absorption, Scattering, and Refraction of PbSe and PbS Nanocrystals, Dr. Igor L. Bolotin, UIC Chemistry Dept.
  2. Strain in Anisotropic Type II Nanocrystal Heterostructures, Hunter McDaniel,UIUC Chemistry Dept.
  3. Photoluminescence lifetime of PbSe nanocrystal and the influence of the ligands, Heng Liu, Physics Dept. U. Chicago.
  4. Relaxation of Exciton Confinement through Partial Hole Transfer to a Conjugated Dithiocarbamate Ligand, Matthew Frederick, Northwestern U. Chemistry Dept. 
  5. Self-Assembly of gold nanoparticles for SERS active substrates, Dr. Aiqing Chen, ANL 
  6. Photocurrent Imaging In Single PbS Nanowire Field Effect Transistors, Prof. Dong Yu, UC Davis Physics Department. 
  7. Nanoarchitectured Photoelectrodes for Enhanced Charge Transport in Dye-Sensitized Solar Cells, Prof. Tao Xu, Northern Illinois University, Chemistry Dept. 
  8. Meissner effect in Pb nanoparticles, Pavlo Zolotavin, U. Chicago.
  9. Spin Blockade in CdSe nanocrystal conduction, Philippe Guyot-Sionnest,U. Chicago.
  10. Memory in photoconductivity of nanocrystal arrays, Lauren Willis, U. Penn.
  11. Electronic Transport Imaged via Electrostatic Force Microscopy in PbSe Nanocrystal Arrays, Matt Puster, U. Penn.
  12. All-inorganic approach to ligand coating, encapsulation and linking of colloidal nanocrystals. M. Kovalenko, U. Chicago.
  13. Understanding nanoparticle self-assembly, S. Rupich and M. Bodnarchuk, U. Chicago.
  14. Charge transport and photoconductivity in the nanocrystal arrays, J.-S. Lee, U. Chicago.
  15. Effect of Length and Contact Chemistry on the Electronic Structure and Thermoelectric Properties of Molecular Junctions, J. Balachandran, U. Michigan.
  16. Fabrication and Mechanical Properties of Large-Scale Freestanding Nanoparticle Membranes Pongsakorn Kanjanaboos, U. Chicago
  17. Diffusion and filtration properties of gold nanoparticle membranesPongsakorn Kanjanaboos, U. Chicago
  18. Charge transport in nanocrystalline quantum dots and composites with polymers, Sushmita Biwas, UIC
  19. Imaging Current in Dissipative 2-D Nanostructures, Tankut Can and Hui Dai, U. Chicago
  20. Optimization of CdSe/CdS Core/Shell Heterostructures for Luminescent Solar Concentrator, Arnaud Demortiere, ANL