Structural Environment of Nitrogen in N-doped Rutile TiO2(110)
We employ x-ray photoelectron spectroscopy (XPS), reflection high-energy electron diffraction (RHEED) and nuclear reaction analysis (NRA) to characterize the concentration-dependent structural properties of nitrogen doping into rutile TiO2. High quality N-doped TiO2 were prepared on rutile single crystal TiO2(110) substrates using plasma-assisted molecular beam epitaxy with an electron cyclotron resonance (ECR) plasma and Ti effusive sources. Films with N dopant concentrations at or below 2 at.% exhibited predominately substitutional doping based on NRA data, whereas films with concentrations above this limit resulted in little or no substitutional N and surfaces rich in Ti3+. The binding energy of the N 1s feature in XPS did not readily distinguish between these two extremes in N-doping, rendering features within 0.4 eV of each other and similar peak profiles. Although widely used to characterize the state of N in anion-doped TiO2 materials, we find that XPS is unsuitable for this task.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1007369
- Report Number(s):
- PNNL-SA-73720; 35220; KC0301010
- Country of Publication:
- United States
- Language:
- English
Similar Records
Photochemical Properties, Composition, and Structure in Molecular Beam Epitaxy Grown Fe “Doped” and (Fe,N) Codoped Rutile TiO2(110)
Epitaxial single-crystal thin films of MnxTi1-xO2-δ grown on (rutile)TiO2 substrates with pulsed laser deposition: Experiment and theory
In situ characterization of the deposition of anatase TiO2 on rutile TiO2(110)
Journal Article
·
Thu Aug 11 00:00:00 EDT 2011
· Journal of Physical Chemistry C, 115(31):15416-15424
·
OSTI ID:1023108
Epitaxial single-crystal thin films of MnxTi1-xO2-δ grown on (rutile)TiO2 substrates with pulsed laser deposition: Experiment and theory
Journal Article
·
Sat Jan 31 23:00:00 EST 2015
· Surface Science, 632:185-194
·
OSTI ID:1188879
In situ characterization of the deposition of anatase TiO2 on rutile TiO2(110)
Journal Article
·
Mon Feb 26 19:00:00 EST 2018
· Journal of Vacuum Science and Technology A
·
OSTI ID:2561443
Related Subjects
08 HYDROGEN
36 MATERIALS SCIENCE
43 PARTICLE ACCELERATORS
BINDING ENERGY
ELECTRON CYCLOTRON-RESONANCE
ELECTRON DIFFRACTION
Environmental Molecular Sciences Laboratory
HYDROGEN
MOLECULAR BEAM EPITAXY
MONOCRYSTALS
NITROGEN
NUCLEAR REACTION ANALYSIS
PLASMA
REFLECTION
RUTILE
SUBSTRATES
X-RAY PHOTOELECTRON SPECTROSCOPY
36 MATERIALS SCIENCE
43 PARTICLE ACCELERATORS
BINDING ENERGY
ELECTRON CYCLOTRON-RESONANCE
ELECTRON DIFFRACTION
Environmental Molecular Sciences Laboratory
HYDROGEN
MOLECULAR BEAM EPITAXY
MONOCRYSTALS
NITROGEN
NUCLEAR REACTION ANALYSIS
PLASMA
REFLECTION
RUTILE
SUBSTRATES
X-RAY PHOTOELECTRON SPECTROSCOPY