SPECIAL MECHANISM OF CONDUCTION TYPE INVERSION IN PLASTICALLY DEFORMED n-Si

The aim of research is studying the mechanism of n–p inversion of the conduction type of deformed silicon crystals in the course of their thermal treatment. Initially, almost non-dislocation zone-melted phosphorus-doped n-Si single crystals with electron concentration of 2×1014 cm–3 were studied. Uniaxial compression at temperature of 700 °С and pressure of 25 MPa increased the dislocation density to 108 cm–2. After long (within 30 min) cooling of the deformed crystals to room temperature, an n–p inversion of the conduction type occurred. The effect is explained by the formation of phosphorus–divacancy complexes PV2 in the defective atmosphere of dislocations, which are acceptor centers with energy level of Ev+0.34 eV. The found out n–p inversion mechanism differs from the standard one for plastically deformed n-type semiconductors with a diamond-like crystalline structure, which consists in the formation of acceptor centers along edge dislocations

Strategies for sustainable socio-economic development and mechanisms their implementation in the global dimension

The authors of the book have come to the conclusion that it is necessary to effectively use modern approaches to developing and implementation strategies of sustainable socio-economic development in order to increase efficiency and competitiveness of economic entities. Basic research focuses on economic diagnostics of socio-economic potential and financial results of economic entities, transition period in the economy of individual countries and ensuring their competitiveness, assessment of educational processes and knowledge management. The research results have been implemented in the different models and strategies of supply and logistics management, development of non-profit organizations, competitiveness of tourism and transport, financing strategies for small and medium-sized enterprises, cross-border cooperation. The results of the study can be used in decision-making at the level the economic entities in different areas of activity and organizational-legal forms of ownership, ministries and departments that promote of development the economic entities on the basis of models and strategies for sustainable socio-economic development. The results can also be used by students and young scientists in modern concepts and mechanisms for management of sustainable socio-economic development of economic entities in the condition of global economic transformations and challenges