Objective
Fundamental properties of zero-dimensional structures will be gained by this project. Investigations will be carried out of temperature dependent capacitance-voltage (C-V), current-voltage (I-V) and capacitance transient spectroscopy (DLTS) experiments of semiconductor matrices containing sheets with ordered quantum dots (QDs) or arrays of vertically-coupled QDs via tunneling (VECQDs) with the lateral size lower than 20 nm.
For growth of self-organized arrays of uniform QDs based on both I type (InAs-GaAs) and II type (GaSb-GaAs) heterostructures we will use molecular beam epitaxy and MOCVD.
A physical model will be developed to describe C-V and DLTS characteristics of semiconductor heterostructures containing a sheet with QDs. It will be possible to determine the following parameters : (i) the distance from the surface to the plane with quantum QDs, (ii) the sheet concentration of QDs, (iii) electron (hole) energy levels in QDs, and (iv) occupation of QDs as a function of temperature, and (v) electron and hole capture and emission cross sections.
Using static and dynamic capacitance spectroscopy in p- and n-type doped matrices it is possible to study electron and hole states in QDs separately. Investigations of the electric field influence on the recharging of QDs will be carried out. The influence of charge located in the plane with QDs on the distribution of the electric field through all the structure will be studied. Experiments will be conducted on structures with degenerate electron occupation of QDs to determine the influence of electron-electron interaction on the spectrum of energy levels in Qds.
The data on properties of QDs obtained from C-V and DLTS characteristics will be exploited to create a resonant tunneling diode structure and zero-dimensional Esaki-Tsu superlattice, where the tunneling process goes through energy levels in QDs. The properties of these structures will be investigated.
The results of the project will be published in scientific press and presented on conferences.
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
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Coordinator
NG7 2RD Nottingham
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.