Nanocomposite Materials and Devices for Enhanced Sensing Applications

Presenter: Dr. Shayla M. Sawyer, Rensselaer Polytechnic Institute

Performance enhancement is enabled by the use of low cost, hybrid inorganic/organic nanostructured materials. For much of this research, the inorganic materials are nanostructured metal oxides. Advantages due to a high surface to volume ratio for better light absorption and an inherent large internal gain are typically hindered by surface defects and slow carrier transport mechanisms. Our research explores processes and the development of novel devices with strategic use of inorganic/organic core shell structures which provide surface passivation, better light absorption, and improved carrier transport. The combination provides markedly improved detector performance such as high responsivities on the order of 100s of A/W and improved transient responses by orders of magnitude. Furthermore, the nature of these materials leads to its deposition on various substrates, extending its potential sensing applications.

Date: Wednesday, Jan 16, 2013
Time: 1:15 pm - 2:00 pm
Where: Hudson Hall 125
Contact: Leah Goldsmith
Phone: 660-5595
Email: leah.goldsmith@duke.edu