Ultraviolet photodiode fabricated from TiO2 nanorods/p-silicon heterojunction

Sekertekin B., ÖZEL K., ATILGAN A., YILDIZ A.

MATERIALS LETTERS, cilt.323, 2022 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 323
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.matlet.2022.132565
  • Dergi Adı: MATERIALS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: p-Si, TiO2, Nanorods, UV photodiodes, Semiconductors, Electrical properties, NANOWIRES, JUNCTION
  • Ankara Üniversitesi Adresli: Evet

Özet

In this paper, an ultraviolet (UV) photodiode in p-n heterojunction configuration is fabricated from TiO2 nanorods hydrothermally deposited on p-type silicon substrate. Under UV illumination condition, the heterojunction photodiode shows superior UV detection capability achieving a photoresponsivity of 1.41 A/W, a photosensitivity of 80 and a detectivity of 8.32 x 10(11) Jones with a quick response speed of 25 ms. More significantly, the presented fabrication approach can be applicable to other metal-oxide semiconductor based optoelectronic devices.