Pyrolytic Boron Nitride (PBN) OLED Crucible

typical thickness is 0.8~1.5mm


Pyrolytic Boron Nitride OLED Crucible, PBN OLED Crucible


Pyrolytic Boron Nitride (PBN) OLED 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 OLED 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 OLED industries. OLED is an emerging advanced display technology. The PBN OLED crucible is used as the main container of the evaporation element on the OLED production line.

PBN Properties


Tensile StrengthMPa112
Bending StrengthMPa173
Compression StrengthMPa154
Young’s ModulusGPa18
Thermal ConductivityW/m°C“a” 60     “c” 2
Specific HeatJ/g·℃0.90(RT)
Dielectric StrengthD.C. volts/mm2×1015
Dielectric Constant“c” 3.07
Metal Impurity Contentppm<10


 Pyrolytic Boron Nitride (PBN) OLED Crucible Dimensions


SpecificationInner Diameter (mm)Lip Diameter (mm)Height (mm)

* This table is a typical crucible specification, others can be customized


Packaging PBN OLED Crucible


As a ceramic material, boron nitride is quite fragile in a lot of cases. The Pyrolytic Boron Nitride (PBN) OLED crucibles are usually held in plastic bags by vacuum, and protected with heavy foam.


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