Palladium Nanoribbon Array for Fast Hydrogen Gas Sensing with Ultrahigh Sensitivity

Yusin Pak; Namsoo Lim; Yogeenth Kumaresan; Ryeri Lee; Kihyeun Kim; Tae Heon Kim; Sang-Mook Kim; Jin Tae Kim; Heon Lee; Moon-Ho Ham; Gun-Young Jung

doi:10.1002/adma.201502895

Palladium Nanoribbon Array for Fast Hydrogen Gas Sensing with Ultrahigh Sensitivity

Adv Mater. 2015 Nov 18;27(43):6945-52. doi: 10.1002/adma.201502895. Epub 2015 Oct 6.

Authors

Affiliations

¹ School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju, 500-712, South Korea.
² Korea Photonics Technology Institute, Chumdan 4-ro 5, Buk-gu, Gwangju, 500-779, South Korea.
³ Creative Future Research Laboratory, Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong, Daejeon, 305-700, South Korea.
⁴ Department of Materials Science and Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul, 136-71, South Korea.

PMID: 26439187
DOI: 10.1002/adma.201502895

Abstract

A lithographically aligned palladium nano-ribbon (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 10(9) % 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.

Keywords: direct metal transfer; hydrogen gas; lithigraphic alignment; palladium nanoribbons; sensors.