Palladium Nanoribbon Array for Fast Hydrogen Gas Sensing with Ultrahigh Sensitivity

Publisher: John Wiley & Sons Inc

E-ISSN: 1521-4095|27|43|6945-6952

ISSN: 0935-9648

Source: ADVANCED MATERIALS, Vol.27, Iss.43, 2015-11, pp. : 6945-6952

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Abstract

A lithographically aligned palladium nano­ribbon (Pd‐NRB) array with gaps of less than 40 nm is fabricated on a poly(ethylene terephthalate) substrate using the direct metal transfer method. The 200 μm Pd‐NRB hydrogen gas sensor exhibits an unprecedented sensitivity of 109% after bending treatment, along with fast sensing behavior (80% response time of 3.6 s and 80% recovery time of 8.7 s) at room temperature.