Doroshchuk V. Silicon sensor structures with photoelectric and nonlinearoptical response.

The research of new transducer principles in sensor science is one of the important tasks of modern analytical chemistry. To solve it, it is necessary to select, develop and research new functional materials with properties that allow applying new approaches to solve real tasks of chemical analysis. Conducting such research allows development of new sensor systems, which can have significant advantages, in particular from the point of view of automation, the cost of equipment and the price of a single measurement, the creation of multi-sensor systems, simplification of the analysis procedure, etc. The dissertation work is devoted to the development and research of sensor structures based on silicon, the analytical response of which is based on physical effects, the chemical-analytical use of which was practically not paid attention in the literature. The paper considers two such effects: photogeneration of electron-hole pairs and photoinduced changes in the refractive index; and therefore, two types of sensor structures: with photoelectric and nonlinear-optical response.