Au/TiO 2 nanorod-based Schottky-type UV photodetectors

Hakan Karaagac*, Levent Erdal Aygun, Mehmet Parlak, Mohammad Ghaffari, Necmi Biyikli, Ali Kemal Okyay

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


TiO 2 nanorods (NRs) were synthesized on fluorine-doped tin oxide (FTO) pre-coated glass substrates using hydrothermal growth technique. Scanning electron microscopy studies have revealed the formation of vertically-aligned TiO 2 NRs with length of ~2 μm and diameter of 110-128 nm, homogenously distributed over the substrate surface. 130 nm thick Au contacts using thermal evaporation were deposited on the n-type TiO 2 NRs at room temperature for the fabrication of NR-based Schottky-type UV photodetectors. The fabricated Schottky devices functioned as highly sensitive UV photodetectors with a peak responsivity of 134.8 A/W (λ = 350 nm) measured under 3 V reverse bias.

Original languageEnglish
Pages (from-to)442-444
Number of pages3
JournalPhysica Status Solidi - Rapid Research Letters
Issue number11
Publication statusPublished - Nov 2012
Externally publishedYes


  • Hydrothermal growth
  • Nanorods
  • Photodetectors
  • Responsivity
  • Schottky diodes
  • TiO


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