Dasog group research interests primarily lie in the development of micro- and nano-structures for light harvesting, catalysis, and applications in optoelectronic devices. They can be broadly classified under the following themes.
Solid-state synthesis of functional nanomaterials
The Dasog research group employs solid-state methods to synthesize elemental and alloyed nanoparticles, as well as metal carbide, nitride, and oxynitride nanomaterials. We perform mechanistic investigations to understand the formation of these nanostructures and to gain morphological and compositional control. These materials will be further explored for use in applications such as catalysis (water oxidation, nitrogen activation, etc.), plasmonics, and greenhouse gas sequestration.
Mesostructures for solar light harvesting
Harvesting the Sun’s energy and converting it into electricity or chemical fuels holds promise for addressing current and future energy demands. One of the key components of a solar conversion device is a light absorbing material. We aim to engineer the light absorber morphology in order to enhance the light trapping and carrier collection, while reducing the amount and purity of the required material. These mesostructures are fabricated using a variety of methods, such as electrodeposition, hydrothermal precipitation, and physical vapor deposition, among others. The structural properties are determined using standard characterization techniques (electron microscopy, reflectance, quantum efficiency, etc.) and the performance evaluated by integrating the materials into a photovoltaic or photoelectrochemical conversion device.
Printable TCO nanoparticle inks
Transparent conducting oxides (TCO) are materials that are optically transparent but electrically conductive. They are used as front electrode materials in flat panel displays, light emitting diodes, photovoltaics, electronics, etc. The Dasog group is investigating doped metal oxide nanoparticles as printable TCO inks. The nanoparticles are prepared using a solution-phase technique. The film properties are investigated as a function of nanoparticle composition, dopant density, and location.