Can I deposit ITO (Indium tin Oxide) on cured PDMS using E-Beam evaporator and anneal it after that? to what annealing temperature does PDMS hold ?

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Morteza Amjadi

PDMS is a flexible polymer and when you deposit ITO thin film on the top, a small deformation of PDMS can lead to crack formation in your ITO thin film, turning it to a non-conductive film. During the annealing process, thermal expansion of PDMS is much larger that ITO thin film. Therefore, larger surface deformation of PDMS on the annealing process again results in fracture of your thin film.

Mutasem Odeh

but how PET is different as its flexible substrate that are always used with ITO ?

PET is much stiffer that PDMS film and its easy to handle ITO over PET.

Thanks Morteza, Really Appreciate it.