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.
Keywords
Materials scienceNanoparticleVisible spectrumNanocompositeDopingTitanium oxideAbsorption (acoustics)TitaniumOxideSemiconductorValence (chemistry)OptoelectronicsInorganic chemistryNanotechnologyChemical engineeringChemistryComposite materialMetallurgy
Affiliated Institutions
Related Publications
Band gap narrowing of titanium dioxide by sulfur doping
Titanium dioxide (TiO2) doped with sulfur (S) was synthesized by oxidation annealing of titanium disulfide (TiS2). According to the x-ray diffraction patterns, TiS2 turned into ...
Preparation and Photocatalytic Behavior of MoS<sub>2</sub> and WS<sub>2</sub> Nanocluster Sensitized TiO<sub>2</sub>
A new approach has been developed for the fabrication of visible light photocatalysts. Nanoclusters of MoS2 and WS2 are coupled to TiO2 by an in situ photoreduction deposition m...
N-Doping of Graphene Through Electrothermal Reactions with Ammonia
Negatively Doped Graphene Nanoribbons The potential applications in electronic devices of graphene (single atom, thick layers of graphite) would be even greater if it can be acc...
Long-Range Balanced Electron- and Hole-Transport Lengths in Organic-Inorganic CH <sub>3</sub> NH <sub>3</sub> PbI <sub>3</sub>
Unrestricted Travel in Solar Cells In the past 2 years, organolead halide perovskites have emerged as a promising class of light-harvesting media in experimental solar cells, bu...
Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber
Unrestricted Travel in Solar Cells In the past 2 years, organolead halide perovskites have emerged as a promising class of light-harvesting media in experimental solar cells, bu...
Publication Info
- Year
- 2007
- Type
- article
- Volume
- 90
- Issue
- 6
- Citations
- 57
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
57
OpenAlex
1
Influential
48
CrossRef
Cite This
Qi Li,
Wei Liang,
Jian Ku Shang
(2007).
Enhanced visible-light absorption from PdO nanoparticles in nitrogen-doped titanium oxide thin films.
Applied Physics Letters
, 90
(6)
.
https://doi.org/10.1063/1.2454344
Identifiers
- DOI
- 10.1063/1.2454344