Apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence

Dmitry V. Bavykin, Sergey N. Gordeev, Andriy V. Moskalenko, Alexei A. Lapkin, Frank C. Walsh

Research output: Contribution to journalArticlepeer-review

118 Citations (Scopus)

Abstract

Optical absorption and photoluminescence (PL) properties of colloidal TiO2 nanotubes, produced by the alkali hydrothermal method, were studied at room temp. in the range 300-700 nm. Nanotubes having an internal diam. in the range 2.5-5 nm have very similar optical properties, in contrast to the expected behavior for quasi-1-D systems. This is explained by the complete thermal smearing of all 1-D effects, due to the large effective mass of charge carriers in TiO2, resulting in an apparent 2-D behavior of TiO2 nanotubes. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)8565-8569
Number of pages5
JournalJournal of Physical Chemistry B
Volume109
Issue number18
DOIs
Publication statusPublished - 2005

Keywords

  • Luminescence (diam.-dependent
  • Nanotubes
  • Photoexcitation (luminescence excitation
  • titanium oxide nanotube absorption photoluminescence diam size effect
  • Band structure
  • Quantum size effect (nanotube diam.
  • of TiO2 nanotubes)
  • Optical absorption (apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence)
  • UV and visible spectra (absorption
  • Surface structure (of TiO2 nanotubes)
  • apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence)

Fingerprint Dive into the research topics of 'Apparent two-dimensional behavior of TiO<sub>2</sub> nanotubes revealed by light absorption and luminescence'. Together they form a unique fingerprint.

Cite this