Selenium hexafluoride

Description

1. Product Overview
Selenium hexafluoride (SeF₆) is a high-purity, inorganic fluorine compound supplied as a compressed gas, essential for specialized semiconductor doping and plasma etching processes. Its primary industrial use lies in the production of advanced electronic components, specifically for ion implantation in high-voltage diodes and flat-panel displays. The key value proposition is exceptional chemical stability and consistent stoichiometry, enabling precise, repeatable manufacturing yields. Strategically, it is critical as global demand for next-generation power electronics and radiation detection systems accelerates, where no cost-effective substitute offers the same electrical insulation properties.

2. Key Specifications & Technical Characteristics

• Chemical composition: Selenium hexafluoride (SeF₆) ≥ 99.99% (electronic grade); trace impurities: O₂, N₂, CF₄, HF, H₂O, SeOF₂ each < 10 ppm

• Purity level: 4N (99.99%) standard; 5N (99.999%) available upon request for R&D fabs

• Physical characteristics: Colorless, odorless gas at STP; molecular weight 192.95 g/mol; vapor density 6.7 (air = 1); cylinder pressure ~1,500 kPa (21°C)

• Packaging options: Stainless steel cylinders (5L, 10L, 44L) with CGA 660 outlet; ISO-frame cylinder packs for bulk transfer

• Shelf life: 24 months from date of analysis when stored vertically indoors at 5–35°C, away from ignition sources and moisture

3. Core Industrial Applications

• Primary industries: Semiconductor fabrication, flat-panel display manufacturing, radiation detection, high-voltage power electronics

• Specific operational use cases: (1) Etching agent for silicon nitride and polysilicon in MEMS devices – delivers anisotropic etch profiles superior to CF₄. (2) Doping source for selenium ion implantation in drift step recovery diodes (DSRDs) – reduces forward voltage drop by 18% vs. sulfur hexafluoride. (3) Fill gas for neutron detectors and X-ray ionization chambers – outperforms BF₃ in thermal neutron capture efficiency.

• Performance advantages: Lower decomposition temperature (400°C vs. 700°C for SF₆) reduces wafer damage; non-flammable under process conditions; batch-to-batch vapor pressure consistency ensures repeatable plasma uniformity.

4. Competitive Advantages

• Quality consistency: ISO 9001:2025-certified analytical lab with GC-MS and FTIR verification; each cylinder includes a certificate of analysis traceable to NIST standards.

• Supply reliability: Dedicated production line with 99.7% on-time delivery rate; buffer stock held in three continents (Americas, Europe, Asia-Pacific).

• Logistics capability: UN3308 hazardous gas classification with pre-negotiated carrier rates; real-time telemetry on high-value shipments.

• Price competitiveness: Tiered volume discounts from 50 kg/year; direct-from-manufacturer pricing eliminating distributor markups.

• Sustainability & safety: Zero-perfluorocarbon manufacturing process; returnable cylinder program reduces container waste by 92%; full SDS library and onsite safety training modules included.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 5 kg (approx. one 10L cylinder)

• BULK 20MT loading capacity: 20 metric tons per ISO container (648 standard 44L cylinders palletized in 18-layer configuration)

• Lead time: 14–21 days for MOQ; 30–45 days for bulk orders (subject to export licensing)