Enhanced visible-light absorption from PdO nanoparticles in nitrogen-doped titanium oxide thin films

Qi Li, Wei Liang, Jian Ku Shang

Research output: Contribution to journalArticlepeer-review

Abstract

Composite films were made by embedding nanoparticles of p -type PdO semiconductor in a n -type titanium oxide matrix. With the assistance of nitrogen ion beam, these PdO nanoparticles were confined to less than a couple of nanometers. The resulting nanocomposite films demonstrated an unusual "redshift" in the optical absorption spectrum, contrary to the well-known quantum size effect from semiconductor nanoparticles. The absorption in the visible-light range is shown to result from absorption by metallic-like nanoparticles as palladium changed its valence state from Pd2+ to Pd in nitrogen-doped titanium oxide matrix under visible-light illumination.

Original languageEnglish (US)
Article number063109
JournalApplied Physics Letters
Volume90
Issue number6
DOIs
StatePublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint

Dive into the research topics of 'Enhanced visible-light absorption from PdO nanoparticles in nitrogen-doped titanium oxide thin films'. Together they form a unique fingerprint.

Cite this