Imperial College, Centre for Electronic Materials & Devices
ee.ic.ac.uk
see Research Programmes --> Lasers, LEDs and Modulators --> Efficient LEDs from Self-assembled Quantum Dots
Initial attempts to fabricate quantum dots by lithographic means failed largely due to the damage introduced during processing. However QDs with dimensions of only a few nm form naturally when a semiconductor such as InAs is grown on GaAs by Molecular Beam Epitaxy. The detailed nature of their formation is still not known but it is clear that carriers are confined effectively in these tiny structures.
Researchers: David Childs, Jonathan Gray, Surama Malik, Ray Murray, Gareth Parry, Christine Roberts, Philip Siverns, Paul Stavrinou, Mark Whitehead
[this research published ~Y2000]
Several other groups are also investigating optical properties of quantum dots. I'm sure they have entire conferences on this. However, Kopin appears to be working with structures about one order of magnitude larger than the dot people or on the order of tens to hundreds of nm. Thus, a nanopocket could hold about 25*pi nanodots. <g>
WT |
