Dear Md.Saiful Islam

Well, when we're talking about evaporating interface layers within the temperature range of 100-200°C to form a two-layered structure through multilayer formation, you Md.Saiful Islam need to consider the materials' characteristics and suitability for this process.

Firstly, Nafion is a fluoropolymer known for its excellent thermal stability and chemical resistance. However, it typically requires higher temperatures for evaporation, so it might not be the most suitable choice for this temperature range.

Next, polypyrrole and polyaniline are conductive polymers that offer good film-forming properties. They can be evaporated at lower temperatures and are suitable for creating thin films in the desired temperature range. Their versatility makes them potential candidates for interface layers in multilayer formation.

Lastly, PEDOT/PSS (poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate)) is another conductive polymer blend commonly used in organic electronic devices. It has excellent film-forming properties and can be evaporated at temperatures within the specified range. Its high conductivity and compatibility with various substrates make it a promising choice for interface layers in multilayer structures.

Considering the temperature range and the requirements for the formation of a two-layered structure through multilayer formation, polypyrrole, polyaniline, and PEDOT/PSS seem to be more appropriate choices compared to Nafion. Each of these materials has its advantages and limitations, but their compatibility with the specified temperature range and film-forming properties make them worth considering for the intended application.

Dear Kaushik Shandilya Thank you very much for your suggestion and the thorough explanation regarding the selection of the appropriate polymer for the interface layer. I appreciate your valuable comments