Targray's Peak Sun high-purity POCl₃—contributes to higher conversion efficiencies (CE) and provides consistency in the diffusion process, all of which factors towards a lower manufacturing cost per watt.

Targray Technology offers Peak Sun Phosphorus Oxychloride, the highest purity N-type dopant available to the solar cell manufacturing industry today. Peak Sun’s POCl₃ is 7N (99.99999%) purity and available in two grades: Standard and Five-Star. The Five-Star grade product has even lower levels of trace elements than the standard grade. It reduces variability in bin distribution, increases minority carrier lifetimes and provides consistency in the diffusion process. For manufacturers, this means improved bin distribution, higher conversion efficiencies (CE) and lower manufacturing cost per watt.

Benefits

• Highest Purity POCl₃ 7N (99.99999% purity) in the PV industry.
• Lowest levels of titanium, molybdenum, and vanadium impurities.
• Higher minority carrier lifetime after deposition process.
• Narrower bin distribution in solar cells.
• Provides consistency in the diffusion process.
• Higher conversion efficiencies and lower manufacturing cost per watt.
• Break-seal packaging guarantees integrity of product.
• Peak Sun technical staff available to answer process related questions.
• Onsite safety and process support available.
• Hazardous material disposal.
• 24 hour telephone support available in the case of spill.
• Peak Sun application engineering support.

Peak Sun’s experience and manufacturing capabilities have enabled them to make the best quality POCl₃ in the world for PV applications. Phosphorus Oxychloride (POCl₃)is liquid phosphorus used as an N-type dopant in tube diffusion processes for silicon wafers. It is used to form the N-Type emitter of P-N junctions and to getter impurities in 6N mono and multicrystalline solar cells. Peak Sun’s high purity 99.99999%, 7N, reduces variability in bin distribution, increases minority carrier lifetimes which contribute to higher conversion efficiencies and provides consistency in the diffusion process.

Packaging

• Distributed in industry standard 1.5L quartz bubblers.
• Bubbler is fitted with a hermetic break-seal to ensure product integrity.
• 2,250 grams of material per bubbler.
• Bubbler technology compatible with all current makes of temperature controllers and tube diffusion furnaces.
• Packaging, double bagging, visual leak indicators, and break-seal bubbler guarantee integrity of product during transport and storage and ensure safety on manufacturing floor.
• Containers for bulk distribution systems are also available.

Availability

Peak Sun POCl₃ is available exclusively through Targray in the North American, European, Indian and Australian PV markets.