A High-Purity Phosphine Gas for Electronic Grades

Phosphine is used in the electronics industry as a (n-type) dopant for various types of semiconductors (silicon, III-V compound semiconductor and TFT display manufacturing). CYPURE® high-purity cylinderized phosphine gas supports demanding applications where customers are manufacturing in cleanroom environments (e.g., FS 209E and ISO 14644-1) and to exacting standards of superior quality. Whether it's creating an even faster, smarter microprocessor, or coming up with the newest generation of LED screens, our clients depend on CYPURE® to make tomorrow's dreams a reality today.


Solvay is the leading player in cylinderized phosphine gas for electronic applications. Our products are used primarily in three applications:

  1. To manufacture LED lights
  2. For certain types of high-efficiency solar cells
  3. As a dopant for making semiconductors


We offer two grades of phosphine:

  • CYPURE®, which boasts a purity level of 99.9997% (5N7) 
  • CYPURE® Ultra, which reaches 99.9999% (6N) purity


As our customers manufacture smaller computer chips, they increasingly need purer raw materials. We strive to maintain impurities levels within a specific, narrow range, recognizing the damage that irregularities can pose to our customers. Above all, companies trust Solvay for our consistency in quality and world-class supply capacity. In an increasingly competitive environment, we continue to leverage our global position to ensure alignment with the evolving needs of our customers.


Discover other applications of our Phosphorus Specialties products and technologies