Objective
This proposal aims at realizing a new electron device which can be potentially used for very high-speed (GS/s), low-power (about 1 µW), high-resolution (at least 5 bits), analog-to-digital conversion to answer the demand in industrial sectors of telecommunications and radar systems. The concept of this device, named DEW, derives from the well-known staircase conductance of ballistic electron wave guides. The device concept predicts an output conductance that should be a periodic square wave. This is the second phase of a two-phase project. During the first phase, the device concept of DEW was experimentally established at low temperatures (up to 4.2 K) using devices fabricated from AlGaAs/GaAs heterostrucutres. The objective of the second phase is to deliver DEW devices fabricated from antimonide semiconductor quantum-well structures and capable of operation at temperatures up to 77K. Structures such as InAlSb/InSb, AlGaSb/InAs, and AlSb/InAsSb will be designed, grown, and used for this purpose.
DESCRIPTION OF WORK
The tasks of this project will be carried out through a number of integrated thrusts, some running concurrently:
1. Design and Growth of Optimal Structures:- GaSb/InAs, AlSb/InAs, AlGaSb/InAs and InAlSb/InSb QW structures will be designed, grown, and characterized to yield optimal electrical characteristics;
2. Optimizing Device Design and Device Fabrication:- The DEW design of the first phase will be optimised and used to fabricate DEWs from AlGaAs/GaAs heterostructures. Such devices are named GDEWs; - A study of ohmic and Schottky gate metallization on antimonide QW structures cited above will be undertaken; - The above antimonide QW structures will be used to fabricate DEWs. Such DEWs are called ADEWs.
3. Device Characterization: - Output conductance DG will be measured at low frequency (up to 1kHz) and at temperatures up to 77 K to check a square-wave DG and the maximum temperature at which this is retained; - The intrinsic gate capacitance and RC time constant of DEWs will be extracted through the use of an equivalent circuit that will be developed; - High-speed characterization of DEWs will be carried out to establish operational device characteristics. All the optimisation processes described above will be carried out in an iterative way with all the partners involved. The consortium will meet periodically along with the industrial advisors to review progress against the key objectives and to plan future steps.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology electrical engineering, electronic engineering, information engineering information engineering telecommunications radio technology radar
- natural sciences physical sciences electromagnetism and electronics semiconductivity
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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Funding Scheme
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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.
Coordinator
75752 PARIS CEDEX 15
France
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.