Slot-Die Coater Launching Soon!

Posted on Wed, Nov 01, 2017 by Jon Griffin
The Ossila slot-die coating system will be shipping at the end of January 2018. If you would like more information on this system or want to pre-order, please contact us at

A major challenge in the deposition of thin-film electronic devices is the transition from simple lab-based techniques to those that are compatible with large-scale manufacturing. Simple methods, such as spin coating, are widely used within laboratories - but this technique cannot be integrated into scalable manufacturing lines. However, there is a technique that is suitable for both small-scale and large-scale usage: slot-die coating.

By learning what our customers loved about our highly popular spin-coating system, we set out to develop a slot-die coater that is easy to maintain, operate, and affordable. This resulted in the creation of Ossila's slot-die coater, a miniature system capable of coating substrates over 10 cm in length and 5 cm in width - allowing researchers to take their first steps into optimising the deposition process for slot-die coating.

This technique has many advantages, including complete compatibility with both roll-to-roll and sheet-to-sheet systems and precise thickness control across a wide range of viscosities and solution types.




The Ossila slot-die coating system has the following features:


Affordable Low Price - At just £4995, our system lowers the price barrier and enables more researchers than ever before to perform research into slot-die coating of films.

Space-Saving Design - Designed with lab space in mind, the system's compact desktop design allows it to be placed on standard laboratory benches, fume hoods, and even within gloveboxes.

Inbuilt Integrated Software - The system comes with its own independent digital control system (complete with a full-colour LCD screen), allowing you to easily program and save complex multi-step processes. As such, it does not need to be connected to an external computer.

Uniform Flow Rates and Thicknesses - A syringe pump is built into the slot-die coater, giving users precise control over the amount of solution entering the system - enabling accurate, repeatable control over the thickness of the deposited film.

Portable, Easy Setup - Ready for immediate use upon being plugged into a power socket. With no need for compressed gasses or vacuum lines, it can easily be moved between different labs and different environments.

High Cross-Web Uniformity - By using a simple coat-hanger design for the distribution of solution, the flow rate across the head width is made uniform. As such, you can achieve highly even coatings across the width for a wide range of viscosities.

Variable Channel Thickness - Interchangeable stainless-steel shims give you control over the thickness of the slot die channel. This increases the range of different solutions that can be processed with a single slot die head. By inserting multiple shims, the channel thickness can be increased in intervals of 100μm.

Temperature Control - A built-in hotplate on the stage allows the temperature of the substrate to be controlled up to a maximum of 120°C. Resulting in improved wetting of solutions and variable drying rates of films.

Wide Range of Substrate Speeds- Our motorised stage allows for smooth, continuous movement. With the motor capable of moving at speeds from as low as 1mm/m to as high as 10mm/s, the system has a wide processing window for control of the meniscus.

Precision Alignment - By using a 3-point levelling system along with high precision micrometer gauges, it is possible to precisely align the stage relative to the head. Careful alignment allows for the system to achieve height variations as low as 1um/cm across the travel length of the stage.

Head Height Control - Two micrometers on top of the head carriage allow for the adjustment of the slot-die head relative to the stage. By varying the height, the stability of the meniscus can be improved and the minimum wet film thickness can be changed.

For more information on our slot-die coating system, head on over to our slot-die coater product page where more information on the features, specifications, and on slot-die coating itself can be found!



Author: Jon Griffin

Jonathan joined Ossila in July 2016 after working as a post-doctoral research associate at the University of Sheffield. During his career as a research scientist, he has worked in a wide range of areas including organic light-emitting diodes, organic photovoltaics, transparent conductors, organic lead-halide perovskites, and scale-up processes in thin-film fabrication. As part of his role at Ossila, Jonathan is responsible for the technical support for several material ranges, including perovskites, organic photovoltaics, graphene and other 2-D materials. In addition, he is also involved in the development of new equipment and product ranges.