Russian researchers have discovered new materials for electronics, energy, and medicine.

Researchers from the Moscow Technological University of Radioelectronics (RTU MIREA) have investigated a special class of substances known as chalcogenides of transition metals. These materials exhibit unique electronic, magnetic, and optical properties, making them exceptionally valuable in various fields of science and technology. For instance, they can be utilized in the development of new types of electronic devices, enhancement of medical equipment quality, or improvement of solar panel efficiency.

2025-02-24 10:00:39https://naked-science.ru/article/column/materialy-dlya-elektronik

Researchers at RTU MIREA have studied the chalcogenides of transition metals. They identified the regions of existence for solid solutions, intercalates, and two-phase areas within the obtained systems. These discoveries pave the way for the development of unique materials with extensive application potential. The results of the project have been published in the scientific journal "Thin Chemical Technologies."

“These findings are of immense significance for the advancement of science,” comments Ekaterina Efremova, Associate Professor at the Department of Inorganic Chemistry named after A.N. Reformatsky at the Institute of Thin Chemical Technologies named after M.V. Lomonosov, RTU MIREA. “For the first time, we were able to thoroughly investigate the behavior of such complex systems and reveal their unique properties.”

Chalcogenides of transition metals with low oxidation states and their substituted derivatives remain relatively unexplored chemical compounds. Rhenium disulfide stands out among them due to its characteristics and potential for practical applications. Its unique structure and anisotropic properties make it a promising material for various uses. Additionally, the weak interlayer bonding and unique distorted octahedral (1T) structure suggest the possibility of creating new phases based on it.

The samples were obtained using high-temperature solid-state ampoule synthesis in a vacuum. The study was conducted using X-ray phase analysis and X-ray photoelectron spectroscopy methods.

The research concluded that solid solutions of the insertion type form in regions rich in rhenium, while intercalated phases are realized in areas close to the disulfides of titanium and molybdenum. In the ReS2–WS2 system, a solid solution region was discovered, including 30, 50, and 70 molecular percent of rhenium disulfide, whose structure represents a polymorphic modification of the original components. The presence of rhenium, molybdenum, and tungsten in these phases at an oxidation state of (+IV) was also confirmed.

“This study paves the way for the creation of materials with unique electronic, magnetic, and optical properties,” adds Mikhail Kobrin, a lecturer at the Department of Inorganic Chemistry named after A.N. Reformatsky at the Institute of Thin Chemical Technologies named after M.V. Lomonosov, RTU MIREA. “This could lead to significant advancements in various industries and technologies.”