Pyrolytic Boron Nitride (PBN) Evaporation Boat

Solving Outgassing and Spitting in Vacuum Deposition

In vacuum coating processes like OLED organic material deposition, engineers frequently encounter issues with material “spitting” or severe outgassing causing film defects. Replacing traditional sintered ceramics with a high-purity PBN evaporation boat fundamentally resolves these contamination challenges.

1. Zero Outgassing in UHV Environments

Many conventional evaporation dishes contain binders that release complex gases upon heating. Telite Ceramics manufactures every pyrolytic boron nitride boat using an advanced Chemical Vapor Deposition (CVD) process. With a purity level of ≥99.99% and zero binder content, it ensures absolute cleanliness in Ultra-High Vacuum (UHV) environments. It is highly regarded as a highly stable OLED evaporation source.

2. Non-Wetting Surface for Easy Cleaning

When evaporating precious metals (such as Au, Ag, Cu), standard crucibles often suffer from severe adhesion, leading to metal waste and difficult cleaning. Operating as a reliable PVD evaporation crucible, the PBN material exhibits a unique non-wetting characteristic. Residual metals cool into easily removable droplets or solid pieces, allowing you to peel them off effortlessly. This dramatically increases the recovery rate of expensive materials and extends the component’s lifespan.

3. Exceptional Thermal Shock Resistance

Intermittent evaporation processes require rapid heating and cooling, which often causes standard ceramic boats to fracture. The exceptional thermal shock resistance of PBN ensures stability across thousands of thermal cycles.