Moscow Polytech: Thin film materials for nanoelectronics

2023: Obtaining samples of low-defect thin-film materials for nanoelectronics

Scientists at the Moscow Polytechnic received samples of low-defect thin-film materials used in nanoelectronics devices. The obtained samples have physical, chemical and operational characteristics necessary to create energy-efficient and environmentally friendly devices in automotive and rocket engineering. Representatives of the Moscow Polytechnic reported this to TAdviser on April 28, 2023.

The Russian scientists obtained samples of thin film materials for nanoelectronics
Illustration: kartinkin.net

As specified in the university, the project is being implemented within the framework of the Priority 2030 program of the national project "Science and Universities."

Our project is designed for three years. During the study, we received laboratory samples of thin film materials of several compounds, studied their structure and partially determined the properties, - said the project manager Alexander Kazak. These materials have potential applications in nonlinear optics because they have properties that can be used as laser limiters. This can be useful for protecting the eyes of pilots, instruments on aircraft and spacecraft, as laser radiation can be dangerous to the health and vision of pilots.

Low-defect thin film materials can help protect pilots' eyes from laser radiation
Photo: Moscow Polytechnic University

A variety of methods for depositing objects on a solid substrate allows the production of films with the desired structural and optical characteristics. In the project, Russian scientists use a method of obtaining materials based on the transfer of floating layers from the air/water phase interface to a solid substrate. As explained in the Moscow Polytechnic, this allows you to achieve a higher order of molecular layers than in other methods.

First, scientists obtain a solution of an organic compound in a volatile solvent of a certain concentration. At the same time, the compounds themselves are either insoluble in water or minimally soluble. Further, taking into account the geometric parameters of the molecules, a certain amount of an organic compound solution is applied to the water surface using special dispensers or microlitre syringes. The applied volume is tens or hundreds of microliters. After applying the solution to the surface of the water, the solvent must "evaporate" within 15-20 minutes so that only the organic compound remains, the researchers said.

The next stage, they said, is film formation using special mobile barriers and surface pressure control. When the desired film structure is achieved, it is transferred to a solid substrate, as which various materials are used, such as silicon or glass with electrodes. If optical properties are examined, quartz glass is used as a substrate.