Q&A / We have compiled frequently asked questions from our customers.

I am concerned about the deterioration of the performance of the coating film because it is an organic material.
PEDOT:PSS is known as one of the most stable materials among conductive polymer materials. Moreover, our formulation techniques make it possible to improve its stability by a factor of several tens.
However, organic materials are damaged by ultraviolet more easily compared to non-organic materials. In cases where the film is exposed to direct sunlight, and yet high reliability is required, some measures such as UV protection are necessary.
I am concerned about its usability because PEDOT:PSS is acidic.
The dispersion liquid and coating film from PEDOT:PSS are not irritating human skin and cause little environmental contamination.
The reason is that it is thought that the high molecular weight of PSS results in human skin having low permeability to it.
However, metal may rust; therefore, we recommend measures to prevent rust such as the use of materials such as stainless steel, plated metal, or resin lining, for the parts coming into direct contact with liquid.
For customers who have difficulties taking measures with their equipment, we can adjust the liquid’s pH to make it neutral.
I am worried about whether it will be worth because PEDOT:PSS is expensive.
It is true that PEDOT:PSS is expensive, but a very low content (a thin film) is sufficient for PEDOT:PSS to be effective.
So, it can potentially be used for cost-sensitive applications.
In addition, now we can also offer an affordable grade of PEDOT:PSS since we have reconsidered our manufacturing method by cooperating with the manufacturer of the raw materials for PEDOT:PSS.
What properties can be added other than conductivity?
We can modify the properties as you need.
Ability to wet the various substrates required during the coating process, viscosity and rheology appropriate for relevant processes, film thickness, storage stability, drying speed, pH, etc.
For matching with surrounding materials, adhesion to various substrates, recoatability when layers are added, adhesion to added layers of film, surface flatness, transparency, refractive index, color tone, etc.
Steel wool resistivity, solvent resistance, resistance to air exposure, anti-smudge properties (water repellency), antifogging properties (hydrophilicity), printability, etc. when being used on an outermost surface.
Heat resistance, humidity resistance, UV resistance, etc. for long-term use.
Should I provide some requirements expressed as target values when requesting the development of a new product?
The clearer the target values are, the faster and more accurately development will go. We can, however, make efforts for development even if the values are not well defined.
For example, there was a case where we made some pilot samples based on only a concept, and with the results of the evaluations of those samples, we determined the specifications together with the customer.
Is an order for a small quantity acceptable?
Please feel free to ask us first. However, if the quantity is extremely low, we may not accept the order due to production scale problems.