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New Product: Momentive Performance Materials offers PBN for thermal stability in CIGS manufacturing

24 October 2007 | Solar Cell: Product Briefings

PBNProduct Briefing Outline: Momentive Performance Materials, Inc. recently launched a new product line of Pyrolytic Boron Nitride (PBN) crucibles, heaters and coatings to consider for the enhancement of the production of CIGS (copper, indium, gallium, selinide) solar cells.

Problem: Compared to other alternative ceramic materials, PBN potentially provides a higher level of chemical and thermal stability and a lower total cost of ownership. Due to the relatively low wetting of PBN by most molten metals, PBN typically withstands the high temperature and high-volume throughput demands of CIGS solar cell manufacturing with minimal deterioration.

Solution: Pyrolytic Boron Nitride (PBN) is an anistropic, high-temperature ceramic that exhibits a unique combination of high electrical resistance and good thermal conductivity. This non-toxic, non-porous compound is exceptionally pure by virtue of the synthesis process (high temperature/low press chemical vapor deposition). It can be deposited or easily machined into a wide variety of shapes, including crucibles, boats, tubes, bottles and machined plate products. As coatings on graphite, it may help protect heaters and evaporation sources from the corrosive effect of molten metals. PBN’s directional thermal conductivity provides improved “heat spreading” capability for improved temperature uniformity, according to the company. The combination of high strength, good thermal conductivity and a low coefficient of thermal expansion make the materials extremely resistant to thermal shock, the company claims.

Applications: CIGS (copper, indium, gallium, selinide) solar cells.

Platform: Pyrolytic Boron Nitride (PBN) and Pyrolytic Graphite Crucibles, Heaters and Coatings.

Availability: October 2007 onwards.

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