Physics Department Lunchtime Seminar Series* – Week 11
“Silicon Quantum Dots”
Speaker: Xihong Peng
(07/19/2006 Wed., 12:00 – 1:00 pm, Science Center 1C13)
Abstract
The decrease in size of semiconductor nanoclusters can result in a variety of
new properties that are absent in the bulk. For example, while bulk silicon
does not emit visible light, photoluminescence is found for clusters smaller
than a critical dimension. This effect is ascribed to strong quantum
confinement. A short history of the luminescence of Si quantum dots will be
introduced. Our density functional simulations about the size and strain
effects on the energy gap of Si dots will be present.
Prof. Eah will bring donuts.
Please refer to our Lunchtime Seminar website for update:
http://www.rpi.edu/dept/phys/Dept2/Summer_Seminar/summer_seminar.html
(*Physics graduate student summer activities, supported by PGSC)