Ossila Slot-Die Coater
User Manual
Ossila.com
7
Ossila Limited © 2019
2.
Overview
Slot-die coating is an advanced thin-film deposition technique that is compatible with large-scale
manufacturing processes such as roll-to-roll and sheet-to-sheet deposition systems. The technique is
part of a class of coating techniques called ‘metered coating techniques’, in which the thickness of the
deposited layers is solely dependent upon the rate of solution flow and the speed at which the
substrate moves.
Figure 2.1
An Ossia slot-die coater
This compact slot-die coating system is aimed at research and development teams who are looking to
transition away from techniques that are incompatible with large-scale processing, such as spin
coating. The Ossila Slot-Die Coating System has been designed for simple operation, easy
maintenance, and affordability. An integrated high-precision Syringe Pump allows for accurate and
reproducible flow rates, which are essential for controlling thin-film thicknesses.
The substrate stage is levelled using a simple three-point levelling system combined with high-
precision digital height gauges. Additionally, the stage incorporates a heating element allowing
substrates to be heated up to 120°C.
The slot-die head is made from stainless steel, ensuring compatibility with a wide range of chemicals.
The internal design of the head uses a simple ‘coat hanger’ manifold to distribute the solution evenly
across the coating width, resulting in minimal thickness variation.
