Solution Growth and Assembly of Semicoductor Nanorods and Nanowires for Advances in Thin Film PV and Lithium iron Batteries

Date

Sep 22, 2014

Time

3:00 PM - 4:00 PM

Speaker

Dr. Kevin M. Ryan

Affiliation

Materials and Surface Science Institute, University of Limerick, Ireland

Language

en

Main Topic

Materialien

Other Topics

Materialien, Physik

Host

Christine Malbrich

Description

Abstract Semiconductor crystals with sizes in the order of tens of nanometers can be synthesised and processed from solution creating a new paradigm in materials design where wet chemistry can produce inorganic structures with unique size and shape tuneable properties. Here we report recent advances from our research on the solution synthesis of a range of semiconductors: II-VI, IV, I-VI, I-III-VI2, I2-II-IV-VI4 in nanorod and nanowire form. We can subsequently assemble these nanostructures from solution over device scale areas with precise control. Recent highlights from our work on the application of these materials in solar cells and batteries will be discussed. In particular, the first formation of copper zinc tin tetrasulphide (CZTS) nanorods will be outlined. This semiconductor is highly sought for thin-film PV due to the material abundance of all the constituent elements combined with high efficiencies. For battery applications, the solution synthesis of tin-seeded silicon nanowires will be discussed in addition to their investigation as a hybrid composite lithium battery anode, showing high capacities, where both the semiconductor and the seed cycle lithium.

Links

• Seminars at the IFW

Last modified: Sep 22, 2014, 9:49:56 AM