Shmyryeva O. Solid-state electronic converters for the photothermoenergy and sensory systems

In the thesis new physical-technological processes of creation of high-efficiency photoelectric converters of terrestrial and space application, multi-parameter sensors of miscelleneous application with the use of thin films of nanocrystalline semiconductor materials and oxides of rare earths; multi-layer morphological structures with controllable ratio of amorphous and crystalline phases; photoelectric converter structures with three-dimensional distributed potential barriers; encapsulation of photoelectric modules with transparent film concentrating coverages have been investigated. The basis formation mechnisms of films Si (nanoporous, amorphous, nanocrystalline Si) which determine their electro-physical, optical, thermal and photo-electric characteristics. For the first time new silicon composites alloyed with yttrium, yttrium and tin, europium, new types of thin-film two-composition systems on the basis oxides of rare-earth metal with functional properties controllable within a wide range throughthe change of composition and structural organization have been created. Principles of construction of integral multi-parameter biosensors for measuring various signals arising during convertation of products of biochemical reaction simultaneously within the same volume, what allows a high - certainty definition of concentration of a given substance taking into account the changes in numerous side factors have been developed and practically realized.