Hydrogen gas sensing and photodetector applications on electrofabricated Pd@CuCo2O4 nanostructures

ORHAN Z., ÖZTÜRK DOĞAN H., AYDOĞAN Ş., SARITAŞ S., Kurt Urhan B.

Ceramics International, vol.50, no.5, pp.8472-8479, 2024 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 50 Issue: 5
  • Publication Date: 2024
  • Doi Number: 10.1016/j.ceramint.2023.12.182
  • Journal Name: Ceramics International
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.8472-8479
  • Keywords: CuCo2O4, Electrochemical deposition, H2 gas sensor, Pd nanoparticles, Photodetector
  • Ataturk University Affiliated: Yes

Abstract

Herein, CuCo2O4 nanocomposites were synthesized using a facile electrochemical method and a subsequent annealing treatment. Afterward, uniform Pd nanoparticles were further doped on the surface of CuCo2O4 via an electrochemical deposition. Gas-sensing tests showed that this novel Pd@CuCo2O4 hybrid exhibited a relatively high response of 17 % and a short response time of 150 s. The response of the film to hydrogen gas was measured at flow values of 500 and 1000 ppm at 300 °C. Pd@CuCo2O4 shows 17 %, CuCo2O4 shows 16 % response to 1000 ppm, Pd@CuCo2O4 shows 11 %, CuCo2O4 shows 9 % response to 500 ppm H2 gas. Furthermore, Pd@CuCo2O4/n-Si and CuCo2O4/n-Si devices were fabricated as a photodetector. I–V measurements were performed under both visible light and UV light (365 and 395 nm) to test the optical performance of both devices. The Pd@CuCo2O4/n-Si exhibited better optical performance than the undoped device, and this was attributed to the increase in the conductivity of the material by Pd doping. The results indicated that Pd@CuCo2O4 hybrid composites are a promising material for monitoring and accurately detecting H2.