Patinal® Substance H4 HD

Patinal® Substance H4 HD by Merck KGaA, Darmstadt Germany is a high refractive index evaporation material. It is suitable for the vacuum deposition of highly transparent homogeneous thin film coatings. It is composed of a mixture of titanium oxide and lanthanum oxide to form a stable LaTiO₃ phase. It allows for very stable process conditions as well as stress compensation in multilayer stacks and is thus very well suited for high precision optical coatings.

• It is suitable for low absorption coatings on temperature sensitive substrates such as polymers.
• It is recommended for high quality AR and other optical multilayer coatings for near ultraviolet (NUV), visible spectroscopy (VIS), near-infrared (NIR) on glass, crystalline substrates and polymers.
• It is used in protective and reflection enhancing coatings on metals in combination with e.g., SiO₂.