Scientists from LETY have created a prototype of an installation for the study of new types of semiconductor films

Scientists from LETY have created a prototype of an installation for the study of new types of semiconductor films

The St. Petersburg State Electrotechnical University (LETY) created a prototype of an installation for the study of new types of semiconductor films. As the creators said, this facility should allow technological enterprises and scientific laboratories to reduce the cost and simplify the process of studying ultrathin materials for microelectronics. The research has already been published in the scientific journal Technologies.

According to Nikita Permyakov, Associate Professor of the Department of Micro and Nanoelectronics of SPbGETU “LETY”, the development is a prototype of a probe device that allows studying the characteristics of thin materials (films). These films can be the component basis for a new type of electronics. The solution proposed by the scientists (the use of “liquid” probes) makes it possible to examine thin film samples of materials without destroying them, unlike analogues.

The installation can study all the main (volt-ampere) characteristics of semiconductor materials. Samples are placed on a special table to which special probes are connected. Each probe is a syringe with a metal needle (bore diameter 400 microns), similar to those used in insulin pumps.

The working prototype has only one probe. With its help, LETY researchers managed to successfully measure the characteristics of thin films of zinc oxide (ZnO), a semiconductor that is considered a promising material for electrodes, components for fuel cells, and laser technology. In the perspective of samples, the installation will be equipped with four probes. Probes will be moved in three-dimensional space using a numerically controlled machine.

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