Russia’s ambitious orbital manufacturing initiative is advancing as cosmonauts prepare for a spacewalk to grow ultra-pure semiconductors in open space. Sergey Kud-Sverchkov and Sergey Mikaev, Russian cosmonauts, are scheduled to retrieve an additional cassette from the experimental “Ekran-M” equipment, which sits outside the International Space Station, on May 27. The semiconductor substrates in the cassette were subjected to the vacuum of space, resulting in the formation of layers of gallium arsenide.
The effort includes a much broader scope than a straightforward ISS experiment. Scientists in Russia are increasingly considering orbital semiconductor production as a potential technological frontier in which space itself is integrated into the manufacturing process. This project could eventually enable the production of high-performance electronic materials in orbit with a level of purity that is exceedingly challenging and costly to obtain on Earth, provided that it is successful.
A Unique Semiconductor Experiment in Orbit
Russian researchers presently describe the “Ekran-M” project as the only active experiment in the world that is dedicated to the development of ultra-pure semiconductor structures in open space through the use of molecular beam epitaxy technology. The Rzhanov Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences was responsible for the development of the system.
The project’s concept is deceptively straightforward. Extremely pure conditions are necessary for semiconductor growth. The crystal structure of advanced semiconductor materials can be disrupted by even microscopic contamination from oxygen, water vapor, or ambient particles on Earth. Manufacturers use vibration isolation systems, vacuum chambers of huge dimensions, fabrication facilities that are exceedingly costly, and several purification stages to address this issue.
Nevertheless, one of the essential components required for these processes is inherently present in space: ultra-high vacuum. Some of the complexity associated with terrestrial semiconductor production may be removed by the orbital environment, according to scientists. The vacuum conditions outside the International Space Station (ISS) are believed to facilitate the formation of more pure crystalline layers, which could potentially expedite the entire deposition process, according to Russian researchers.
The molecular beam epitaxy method, which is often shortened as MBE, is used by the equipment that is installed outside the station. This method includes the evaporation of ultra-pure materials, resulting in the formation of narrow molecular beams that settle onto a heated crystalline substrate. Atoms organize themselves into semiconductor films that are only a few nanometers thick, layer by layer.
Molecular beam epitaxy systems are among the most sophisticated devices in the semiconductor industry on Earth. They operate within ultra-high vacuum chambers, where the pressure can approach near-perfect vacuum conditions, and the material purity requirements often exceed 99.999999 percent.
Russian scientists are of the opinion that the execution of this process in space could yield even more superior results while simultaneously easing certain engineering constraints that are imposed by Earth-based facilities.
Why Gallium Arsenide Is Important
Gallium arsenide, or GaAs, is the semiconductor that serves as the focal point of the experiment. Gallium arsenide, in contrast to conventional silicon, is capable of operating at high frequencies and elevated temperatures due to its extraordinary electron mobility. It is beneficial for satellite technologies, military radar systems, aerospace electronics, photonics, and advanced communications due to these attributes.
Gallium arsenide is currently used in smartphone power amplifiers to further improve wireless communication efficacy and signal quality. Additionally, it is indispensable for microwave electronics, lasers, photodiodes, solar panels, and high-frequency integrated circuits. GaAs solar cells are highly valued in space applications due to their exceptional efficiency and radiation resistance.
The global community is increasingly recognizing the strategic importance of the broader family of gallium-based semiconductors, which includes gallium nitride. Due to its capacity to operate at higher temperatures and voltages, gallium nitride technology is quickly replacing silicon in radar systems, high-power electronics, and advanced telecommunications equipment.
Not only could the production of ultra-pure gallium-based semiconductor layers be significant for civilian industries, but it could also have a major effect on aerospace and defense technologies in Russia.
What is the purity of Western semiconductor materials?
One of the main questions regarding the “Ekran-M” experiment is whether orbital manufacturing can truly outperform the purity and crystalline quality that are achieved in the most advanced terrestrial semiconductor fabs.
Already, semiconductor manufacturing in the Western world operates with remarkable precision. Semiconductor materials with impurity concentrations measured in parts per billion or lower can be generated by modern molecular beam epitaxy systems in the United States, Europe, Japan, South Korea, and Taiwan. Advanced fabrication often uses ultra-pure source materials that exceeds the purity threshold of 99.999999 percent, which is commonly referred to as “8N purity.”
Companies that specialize in the development of advanced GaAs and GaN semiconductors depend on cleanroom environments that are significantly cleaner than those found in hospital operating rooms. The air within these facilities is subjected to continuous filtration to eliminate microscopic contaminants. Crystal growth can be influenced by even minute temperature fluctuations or vibrations from nearby traffic.
Earth-based production continues to meet inherent physical constraints, regardless of these gains. Convection currents are influenced by gravity, impurities settle differentially, and atmospheric contamination continues to be a persistent issue. The preservation of ultra-high vacuum conditions necessitates the use of energy-intensive, huge apparatus.
According to Russian scientists, these constraints are naturally eased by open space. In orbit, there is a vacuum environment that is difficult to replicate economically on Earth, and there is virtually no atmosphere. Additionally, there is no exposure to oxygen. This does not necessarily ensure that the semiconductors are of superior quality; however, it may facilitate the production of experimental structures that are impossible to produce conventionally.
Consistency is the main obstacle. Western factories are capable of producing billions of transistors with extremely accurate tolerances. Orbital production continues to be logistically challenging, costly, and experimental. It could require many years to retrieve materials from orbit, analyze them, and scale the process for industrial manufacturing.
Building a Space Factory
The long-term implications of “Ekran-M” are far-reaching and exceed mere scientific curiosity. The potential for the direct production of semiconductor materials in orbit is a topic of open discussion among Russian researchers.
Future space stations or autonomous orbital platforms could potentially manufacture specialized semiconductor wafers that are economically unfeasible to produce on Earth if orbital manufacturing becomes feasible. These facilities may concentrate on high-value, niche components rather than mass-market processors.
This concept is consistent with a more generalized global trend toward industrialization that is based on space. Pharmaceuticals, fiber optics, crystals, biological materials, and advanced alloys are currently being investigated by companies and research agencies worldwide to determine whether microgravity and space vacuum environments can enhance their production practices.
Semiconductors are particularly appealing due to the fact that even minor improvements in crystal quality can significantly improve performance in critical applications, including high-efficiency solar cells, military radar, satellite communications, and quantum computing.
Orbital manufacturing is also of strategic importance to Russia, which has been subjected to escalating pressure from technology sanctions and restricted access to sophisticated Western semiconductor equipment. The national priority is the development of independent high-performance semiconductor capabilities.
Timeline of the Experiment
The equipment used for the experiment was installed on the exterior of the ISS Nauka module by cosmonauts Alexey Zubritsky and Sergey Ryzhikov in October 2025, marking the officially beginning of the first phase of the “Ekran-M” mission. The first cassette was inserted in the device later that month to continue the growth process.
In March 2026, an additional experimental cycle was implemented. Another cassette containing substrates coated with gallium arsenide layers grown directly in the vacuum of space will be retrieved by Kud-Sverchkov and Mikaev during the forthcoming May 27 spacewalk.
Upon its return to Earth, scientists will evaluate the material’s electronic characteristics, purity, defect density, and structure. These measurements will ascertain whether orbital growth resulted in quantifiable enhancements in comparison to terrestrial semiconductor fabrication.
A New Industrial Frontier in Space
The “Ekran-M” program demonstrates the increasing use of the International Space Station as a testing site for future industrial technologies, in addition to serving as a laboratory for scientific research. Although numerous ISS experiments concentrate on human health or biology, this endeavor is specifically designed to advance manufacturing.
It is uncertain whether space-grown semiconductors will ultimately become commercially viable. Major challenges include radiation exposure, launch costs, operational complexity, and limited production volume. However, the project underscores a growing recognition in the global technology sector: the future of manufacturing may not be limited to Earth.
The implications of Russian scientists’ demonstration that orbital conditions authentically enhance semiconductor crystal quality could have a significant impact on a variety of industries, including telecommunications, renewable energy, military electronics, and artificial intelligence hardware.
At present, the small cassette that is being recovered from outside the International Space Station may appear inconsequential. However, it may contain evidence that the next iteration of semiconductor manufacturing may eventually expand beyond cleanrooms and into space.