Making Most of the Absorbed Photon: New Insights into Carrier Multiplication in Semiconductor Nanostructures

submitted by: RASEIBoulder
Carrier multiplication (CM) or multiexciton generation (MEG) is a process whereby absorption of a single photon produces multiple electron-hole pairs (excitons). CM could benefit a number of solar-energy conversion technologies, most notably photocatalysis and photovoltaics. This presentation overviews recent progress in understanding of the CM process in semiconductor nanocrystals, motivated by an outstanding challenge in this field - the lack of capability to quickly discern between...

Directed Assembly of Anisotropic Particles - Fundamentals and Energy-related Applications

submitted by: RASEIBoulder
Summary: Spherical colloids with isotropic properties have been used as building blocks to assemble a variety of 2D and 3D structures in past, such as FCC, HCP, and BCT crystals. Anisotropic particles are, however, more faithful mimics of molecules and atoms because of the anisotropic interactions. Current synthetic methods are versatile and accurate enough to create and tune the anisotropic properties in geometry, chemical composition, surface functionality, and physical properties. In the...

The Colorado Solar Technology Acceleration Center

submitted by: icamp2012school

Dustin Smith, Solar Technology Acceleration Center, Aurora, CO

Photovoltaics Technology: No Longer an Outlier

submitted by: icamp2012school
Larry Kazmerski, National Renewable Energy Laboratory Solar energy from photovoltaic devices has been around since the early days of the space race, but historically has not had a substantial impact on our global energy scheme. Is that now changing? Dr. Larry Kazmerski is the executive director of Science & Technology Partnerships at the National Renewable Energy Laboratory (NREL) in Golden, CO. He has worked at NREL for over 30 years and was previously the director of the National...

The 21st Century Solar Army Center for Revolutionary Solar Photoconversion Seminar Series

submitted by: RASEIBoulder
Summary: The sun is a boundless source of clean energy, but it goes down every night. We and many others are trying to design solar-driven molecular machines that could be used on a global scale to store solar energy by splitting water into its elemental components, hydrogen and oxygen. Hydrogen is a clean fuel that could be used directly or combined with carbon dioxide to produce methanol, a liquid fuel. We are working on rugged light absorbers and catalysts made from Earth abundant...

Photo-Physics and Renewable Energy Applications of Single-Walled Carbon Nanotubes

submitted by: RASEIBoulder
Summary: Single-walled carbon nanotubes (SWNTs) are two-dimensionally confined quantum wires that have the potential to impact a variety of renewable energy applications. SWCNTs have several fundamental properties that make them attractive for sustainable energy conversion technologies, including high electron and hole mobilities, size-tunable ionization potentials and electron affinities in an energy range relevant to many photovoltaic devices, and optical transitions in the visible and...

Scalable Coating and Properties of Transparent, Flexible, Silver Nanowire Electrodes

submitted by: yuanyang
We report a comprehensive study of transparent and conductive silver nanowire (Ag NW) electrodes, including a scalable fabrication process, morphologies, and optical, mechanical adhesion, and flexibility properties, and various routes to improve the performance. We utilized a synthesis specifically designed for long and thin wires for improved performance in terms of sheet resistance and optical transmittance. Twenty ohm/sq and 80% specular transmittance, and 8 ohms/sq and 80% diffusive...
Authors: Liangbing Hu, Yi Cui, Han sun Kim, Jung-yong Lee, Peter Peumans

Nanomaterial Catalysts for Solar Hydrogen Generation

submitted by: icamvid

Frank Osterloh presents research on using nanostructures for hydrogen production using solar power.
Presented at the ICAM Annual Conference, January 2010.

Inorganic Nanostructures for Solar Energy Conversion

submitted by: icamvid

Dong Yu presents research on nanocrystal-based photovaltaic cells.
Presented at the ICAM Annual Conference, January 2010.

Photovoltaic Effect for Narrow-Gap Mott Insulators

submitted by: icamvid

Efstratios Manousakis presents research at the ICAM Annual Conference, January 2010.