Objective
The main objective of this project is to develop and implement planar nanostructures based on molecular clusters operating at elevated temperatures, to study the physics of single-electron transport in such nanostructures in a wide temperature range and to develop room temperature single electron tunnelling (SET) devices based on such nanostructures.
Research activities will be tended in the following main directions
1) Technological part: the development of the technology for creation of planar tunnel nanostructures based on molecular clusters, metal clusters and nanoparticles; the development of techniques of forming multi-junction tunnel systems: chains of the molecules and/or nanoparticles embedded in Langmuir-Blodgett films; the development of technique and the implementation of the planar molecular single-electron transistors with high operating temperature (77-300 K) based on these nanostructures. The development of the synthesis of metal nanoparticles by photodecomposition of the carbonyles of metals and creation of nanostructures from it. The processes of self-organization of such nanoparticles in electric/magnetic fields will be used to develop the technique of forming of the chains of the particles as well as the nanoelectrodes for molecular SET-transistors from the metal nanoparticles/clusters. The single-electron transistors on the base of the chains of molecules or/and metal particles, including aerosol clusters, will be implemented;
2) Characteristics study: experimental investigation of I-V curves, control characteristics and noise properties of the developed molecular SET-transistors based on the single molecules; the study of the peculiarities of single-electron tunnelling in transistors on the base of single molecules with the aim to recognize its relation to the properties and structure of investigated molecules. Investigation of characteristics of SET-transistors on the base of multi-junction structures (chains of molecules and/or metal clusters and particles) will be undertaken in the project and obtained results will be compared with ones for the single molecule based transistors. The collective quantum effects in such systems will be studied and its influence on the characteristics of practical SET-devices will be estimated;
3) The theoretical study of single electron tunnelling in the systems with discrete energy spectrum, particularly the molecules and molecular wires, will involve the analytical end computer calculations with the aim to develop a model for the processes in the molecular SET-transistor. The computer simulation of the growth of nanoparticles during photodecomposition of the metal carbonyls under influence of magnetic/electric field as well as construction of the theoretical model of this process will be carried out.
The following main results will be obtained:
1) the techniques of the implementation of the planar molecular single-electron transistors with high operating temperature up to room temperature will be developed on the base of both single molecules and the chains of molecules or/and metal particles;
2) the comprehensive information about characteristics of transistors based on the various molecules will be obtained and a thorough comparison of its characteristics will be carried out for the determination of the optimal way of construction of the practical devices;
3) the relation between molecular transistor characteristics and the molecule properties will be revealed which allows the prediction of properties of the devices from the molecule characteristics;
4) the novel method for implementation of nanoparticles with controllable size and shape will be developed;
5) the estimations of the characteristics of practical devices will be obtained;
6) the new information about collective quantum phenomena in chains of molecules or particles will be obtained and its influence on the practical device characteristics will be estimated;
7) the novel technique of implementation of quantum wires and chains of particles will be elaborated; the theoretical model of particles growing will be developed;
8) the detailed theoretical model of processes in the molecular SET transistors will be derived.
Call for proposal
Data not availableFunding Scheme
Data not availableCoordinator
221 00 Lund
Sweden