Current sensing AFM of CdTe quantum dots on GaAs (111)
EMSL Project ID
1741
Abstract
CsTe have demonstrable potential to serve as nanocharge retaining devices on certain semi-conducting surfaces. Potential applications include high density read-write datea storage. Towards that end, outstanding issues that need to be addressed include the size distribution, surface distribution, and the relationship between these and the surface microtopography of the substrate. Furthermore, the electronic structure at the quantum dot/substrate interface is largely unknown. It is proposed to attempt to address these issues using current sensing AFM. This technique has the abililty to differntiate surface phase based on the local electrical conductivity and surface topography at the same time. Also, I/V spectroscopy may be performed locally over a quantum dot, allowing aspects of the quantum dot electronic structure to be addressed.
Project Details
Project type
Exploratory Research
Start Date
1999-11-02
End Date
2000-01-01
Status
Closed
Released Data Link
Team
Principal Investigator