AbstractIn this study, we report a novel encapsulation method for longevity of an organic thin-film transistor (OTFT) using pentacene by means of an adhesive multiplayer included Al film. For encapsulation of OTFTs, the Al film adhered onto the OTFT in a dry nitrogen atmosphere using a proper adhesive. A lifetime, which was defined as the time necessary to reduce mobility to 2% of initial mobility value, was observed from the typical ID–VD characteristics of the field-effect transistor (FET). The initial field effect mobility, μ, was measured to be 2.0×10−1 cm2/Vs. The characterization was maintained for long times in air. No substantial degeneration occurred. The performance and the stability are probably due to the encapsulation effect.
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