Layered composite film incorporating quantum dots as programmable dopants
US7692180B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2005 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | May 13, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/774
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Quantum dots are positioned within a layered composite film to produce a plurality of real-time programmable dopants within the film. Charge carriers are driven into the quantum dots by energy in connected control paths. The charge carriers are trapped in the quantum dots through quantum confinement, such that the charge carriers form artificial atoms, which serve as dopants for the surrounding materials. The atomic number of each artificial atom is adjusted through precise variations in the voltage across the quantum dot that confines it. The change in atomic number alters the doping characteristics of the artificial atoms. The layered composite film is also configured as a shift register.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.