High-performance flexible hydrogen sensor made of WS2 nanosheet-Pd nanoparticle composite film

KURU C., Choi D., Kargar A., Liu C. H., Yavuz S., Choi C., ...Daha Fazla

Nanotechnology, cilt.27, sa.19, 2016 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 27 Sayı: 19
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1088/0957-4484/27/19/195501
  • Dergi Adı: Nanotechnology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: flexible, hydrogen sensor, room temperature, WS2
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Evet

Özet

We report a flexible hydrogen sensor, composed of WS2 nanosheet-Pd nanoparticle composite film, fabricated on a flexible polyimide substrate. The sensor offers the advantages of light-weight, mechanical durability, room temperature operation, and high sensitivity. The WS2-Pd composite film exhibits sensitivity (R 1/R 2, the ratio of the initial resistance to final resistance of the sensor) of 7.8 to 50 000 ppm hydrogen. Moreover, the WS2-Pd composite film distinctly outperforms the graphene-Pd composite, whose sensitivity is only 1.14. Furthermore, the ease of fabrication holds great potential for scalable and low-cost manufacturing of hydrogen sensors.