Ag nanoparticles decorated AZO/p-Si heterojunction UV photodetector

ÖZEL K.

Optics and Laser Technology, cilt.174, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 174
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1016/j.optlastec.2024.110621
  • Dergi Adı: Optics and Laser Technology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: AZO thin film, Photodetectors, Plasmonic nanoparticles, Responsivity
  • Ankara Üniversitesi Adresli: Evet

Özet

Light-trapping strategies are of paramount importance for fabricating high-performance photodetectors (PDs) and photovoltaic cells. One effective strategy is the utilization of plasmonic nanoparticles (NPs) in device structures. Here, the fabrication of an ultraviolet (UV) PD based on a silver nanoparticles (Ag NPs)-decorated aluminum doped zinc oxide (AZO) thin film is reported. The characterization results indicate that the modification of the surface of the PDs with Ag NPs not only promotes the photocurrent but also suppresses the dark current. The photodetection ability of the PD is improved by incorporating Ag NPs, which enhanced light harvesting capacity through the plasmon effect. This also results in reduced defect states, and improved generation and transport characteristics of charge carriers. Ultimately, the Ag NPs-decorated PD exhibits a high responsivity of 4.36 A/W and an excellent specific detectivity of 3.63 ×1013 cm·Hz1/2/W with a decent photo-response speed in order of ms. In conclusion, the findings suggest that the incorporation of plasmonic NPs into device structure is a promising method for improving the photodetection performance.