Semiconductor Isotopes - Pushing the Boundaries of Computing Power for the Next Century

We are aiming to establish ourselves as an indispensable part of the semiconductor supply chain.

The semiconductor industry is making groundbreaking progress in manufacturing faster and higher-performing computer chips, driving the future of technology. However, this advancement often comes with higher energy consumption and increased cooling requirements, raising operational costs. We aim to be a trusted partner to leading semiconductor and data center companies, helping them efficiently introduce cutting-edge technology using the most advanced materials available. Together, we can innovate while optimizing energy use and reducing expenses.

Natural silicon is comprised of 3 stable isotopes: Si-28 (92.2%), Si-29 (4.7%) and Si-30 (3.1%). High-purity Si-28 is a form of silicon that has been enriched to contain a very high proportion of the Si-28 isotope, reducing the presence of other silicon isotopes. Si-28 is an indispensable isotope in cutting-edge technology, driving advancements in the production of high-performance micro chips, nanowires and enabling quantum computing.

ASPI is the world’s sole commercial provider of highly-enriched Silicon-28 (Si-28) derived from natural silane (SiH4). We collaborate with the global semiconductor industry to deliver large quantities of high-purity Si-28 through 2030 and beyond, enabling the industry to harness the substantial performance benefits of Si-28 nanowires.

Isotopes of interest

Isotopes of interest



Highly-enriched Silicon-28 (Si-28) offers numerous advantages for manufacturing chips and nanowires, primarily due to its superior thermal and electrical properties. These benefits enhance the performance, efficiency, and reliability of semiconductor devices and nanotechnology applications.

Uses in Semiconductors

Improved thermal conductivity

Si-28 has better thermal conductivity compared to natural silicon. This results in more efficient heat dissipation, reducing overheating and extending the lifespan of electronic components.

Fewer defects and impurities

Highly-enriched Si-28 improves electron mobility and eliminates many impurities, resulting in high-performance electronic components.

Minimized quantum decoherence

Si-28 is an ideal material for stable and reliable qubits, which are essential for quantum information processing. This enables longer and more complex computations, advancing the development of practical quantum computers.

Data Centers​

The enhanced heat conductivity of Si-28 is anticipated to lower the cooling expenses for large data centers

Consumer Electronics

Empower everyday electronic devices with ultra-fast chips and high-performance components


Boosting the performance and reliability of electronic components, essential for AI systems

Quantum Computing​

The minimal nuclear spin of Si-28 reduces interactions that induce quantum decoherence, thereby enhancing qubit performance


Depleted Germanium-73

Depleted Germanium-73 refers to germanium that has a reduced concentration of the isotope Ge-73, resulting in a higher purity of other stable germanium isotopes, predominantly Ge-74, Ge-70, and Ge-72. Ge-73 naturally occurs with a relative abundance of about 7.7%, but when it’s depleted, its presence is significantly reduced, enhancing the overall properties of germanium for specific applications.

Depleted Ge-73 is valuable in the semiconductor industry due to its ability to enhance the performance, reliability, and precision of electronic and quantum devices, making it an important material for advancing technology in various high-tech fields.

Uses in Semiconductors

Enhanced Performance

Depleted Ge-73 reduces nuclear spin interactions, similar to the benefits seen with enriched Si-28. This reduction minimizes noise and enhances the performance of semiconductor devices, leading to more reliable and efficient electronic components.

Improved Qubit Stability

In quantum computing, the reduction in nuclear spins due to depleted Ge-73 results in longer coherence times for qubits. This stability is crucial for maintaining quantum information over extended periods, enabling more complex and accurate computations.

Higher Precision Sensors

The minimal nuclear interactions in depleted Ge-73 improve the sensitivity and precision of sensors. This is particularly beneficial in applications requiring high accuracy, such as medical diagnostics, environmental monitoring, and scientific research.

Advanced Transistors

Germanium is known for its high electron mobility, which is advantageous in transistor design. Depleting Ge-73 further enhances this property, leading to faster switching speeds and improved overall performance of semiconductor devices.

Reduced Thermal Noise

Depleted Ge-73 contributes to lower thermal noise in semiconductor components. This is essential for high-frequency applications and devices operating at low temperatures, improving the efficiency and reliability of electronic systems.