Pyrolytic Boron Nitride (PBN) LEC Crucible
Pyrolytic Boron Nitride (PBN) LEC Crucible is produced by the CVD process to create its solid body and all the boron nitride crystals grow parallel to the surface on which the vapor is deposited. Due to the nature of the CVD process, thick wall products (>3mm) are usually not available. For PBN LEC crucibles, the typical thickness is 0.8~1.5mm.
PBN products are extremely pure, as the purity of gas material is easier to be controlled. Typically, PBN products have a total impurity of <100 ppm, which means the purity is no less than 99.99%. With such a high purity level, PBN products are ideal products for semiconductor industries & vacuum systems.
With its high density and purity, PBN is becoming a widely used material in vacuum processes. The CVD process gives this pyrolytic boron nitride an almost perfect layered structure, which leads to anisotropic thermal conductivity, making it an ideal material to make crucibles for crystal growing. PBN LEC crucible is basically a simple cylinder shape crucible used in LEC (Liquid encapsulation czochralski) crystal growth facility.
The pyrolytic boron nitride crucibles EDGETECH could supply are custom produced from our CVD furnace with high purity material. Dimensions of PBN crucibles are limited to 12″ Dia. x 12″ H, by equipment size.
We provide custom PBN crucibles and VGF / LEC / Conical / MBE / OLED crucibles.
As a ceramic material, boron nitride is quite fragile in a lot of cases. The Pyrolytic Boron Nitride (PBN) LEC crucibles are usually hold in plastic bags by vacuum, and protect with heavy foam.