Dopant passivation by adsorbed water monomers causes high humidity sensitivity in PEDOT: PSS thin films at ppm-level humidity

Thin layers of hole conducting polymer poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT:PSS) are widely utilized in the fabrication of organic light emitting devices. More recently, the material has been considered as a platform for humidity sensor fabrication. This is interesting as t...

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