Modified Oxygen Defect Chemistry at Transition Metal Oxide Heterostructures Probed by Hard X-ray Photoelectron Spectroscopy and X-ray Diffraction

Surface polarity with different crystal orientations has been demonstrated as a crucial parameter in determining the physical properties and device applications in many transition metal oxide and semiconductor compound systems. The influences of surface polarity on electronic structures in nitrogen-incorporated ZnO lattices have been investigated in the present work. The successful doping of nitrogen atoms in ZnO lattices is suggested by the existence of N-related chemical bonds obtained from X-ray photoelectron spectroscopy analysis where a pronounced N–Zn peak intensity has been observed in the (000\bar 1)-terminated polar ZnO compound compared with the (10\bar 10)-terminated nonpolar ZnO compound. An energy shift of the valence band maximum towards the Fermi level has been resolved for both polar and nonpolar ZnO lattices, whereas a charge redistribution of the O 2p hybridized states is only resolved for o-plane ZnO with a polar surface. Angular-dependent X-ray absorption analyses at the O K-edge reveal enhanced surface-state contributions and asymmetric O 2p orbital occupations in the (000\bar 1)-terminated o-plane ZnO compound. The results shed light on the efficient nitrogen doping in ZnO lattices with polar surfaces. The comprehensive electronic structure investigations of correlations between impurity doping and surface polarity in ZnO lattices may also offer guidance for the material design in other transition metal oxide and semiconductor systems.

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Study of the phase composition and structure of composite coatings based on transition-metal oxide compounds via X-ray diffraction and X-ray absorption fine structure spectroscopy

Journal of Surface Investigation X-ray Synchrotron and Neutron Techniques ◽

10.1134/s1027451014010091 ◽

2014 ◽

Vol 8 (1) ◽

pp. 60-65

Author(s):

J. I. Bespalova ◽

A. V. Khramenkova ◽

R. M. Abdala ◽

V. P. Dmitriev

Keyword(s):

Fine Structure ◽

Phase Composition ◽

Transition Metal ◽

Metal Oxide ◽

Composite Coatings ◽

Transition Metal Oxide ◽

X Ray Diffraction ◽

X Ray ◽

Composition And Structure ◽

X Ray Absorption

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Complementary insights from neutron and resonant x‐ray reflectometry for the study of perovskite transition‐metal oxide heterostructures

physica status solidi (b) ◽

10.1002/pssb.202100253 ◽

2021 ◽

Author(s):

Eva Vera Benckiser ◽

Yury Khaydukov ◽

Laura Guasco ◽

Katrin Fürsich ◽

Padma Radhakrishnan ◽

...

Keyword(s):

Transition Metal ◽

Metal Oxide ◽

Transition Metal Oxide ◽

Oxide Heterostructures ◽

X Ray

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In operando observation of sodium ion diffusion in a layered sodium transition metal oxide cathode material, P2 NaxCo0.7Mn0.3O2

Chemical Communications ◽

10.1039/c6cc09415e ◽

2017 ◽

Vol 53 (6) ◽

pp. 1160-1163 ◽

Cited By ~ 10

Author(s):

Steinar Birgisson ◽

Yanbin Shen ◽

Bo B. Iversen

Keyword(s):

Transition Metal ◽

Metal Oxide ◽

Diffusion Mechanism ◽

Transition Metal Oxide ◽

Sodium Ion ◽

Ion Diffusion ◽

X Ray Diffraction ◽

X Ray ◽

Oxide Cathode ◽

In Operando

A cooperative diffusion mechanism of sodium ions in layered P2 sodium transition metal oxide is observed by in operando powder X-ray diffraction.

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Structure Analysis of Transition Metal Oxide Ultrathinfilms by Means of Surface X-ray Diffraction Technique

Materia Japan ◽

10.2320/materia.52.554 ◽

2013 ◽

Vol 52 (12) ◽

pp. 554-557

Author(s):

Yusuke Wakabayashi

Keyword(s):

Transition Metal ◽

Metal Oxide ◽

Structure Analysis ◽

Transition Metal Oxide ◽

X Ray Diffraction ◽

X Ray

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Operando Surface X-Ray Diffraction Studies of Structurally-Defined Oxygen Evolution Electrocatalysts Based on Electrodeposited Epitaxial Transition Metal Oxide Films

ECS Meeting Abstracts ◽

10.1149/ma2020-01191186mtgabs ◽

2020 ◽

Vol MA2020-01 (19) ◽

pp. 1186-1186

Author(s):

Finn Reikowski ◽

Canrong Qiu ◽

Fouad Maroun ◽

Philippe Allongue ◽

Iwan Pacheco ◽

...

Keyword(s):

Transition Metal ◽

Metal Oxide ◽

Oxygen Evolution ◽

Oxide Films ◽

Transition Metal Oxide ◽

X Ray Diffraction ◽

Metal Oxide Films ◽

X Ray

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A study of a number of mixed transition metal oxide spinels using X-ray photoelectron spectroscopy

Applied Surface Science ◽

10.1016/0169-4332(89)90977-x ◽

1989 ◽

Vol 37 (1) ◽

pp. 111-134 ◽

Cited By ~ 286

Author(s):

G.C. Allen ◽

S.J. Harris ◽

J.A. Jutson ◽

J.M. Dyke

Keyword(s):

Transition Metal ◽

Metal Oxide ◽

Photoelectron Spectroscopy ◽

Transition Metal Oxide ◽

X Ray ◽

Oxide Spinels ◽

Mixed Transition

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Characterization on the Microstructures and Optical Performances of TiO2 Doped with Transition Metals

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.887-888.388 ◽

2014 ◽

Vol 887-888 ◽

pp. 388-394 ◽

Cited By ~ 2

Author(s):

Xin Hua Liu ◽

Yi Deng ◽

Yu Chuan Zhang ◽

Yin Hang Zhou

Keyword(s):

Transition Metal ◽

Metal Ions ◽

Photoelectron Spectroscopy ◽

Transition Metal Ions ◽

Ultraviolet Region ◽

Visible Light Region ◽

X Ray Diffraction ◽

X Ray ◽

Light Region ◽

Cu Ions

The structures and optical performances of TiO2doped with 4thperiodic transition metal ions were investigated in this paper. The characterization results of X-ray photoelectron spectroscopy and X-ray diffraction showed that the transition metal ions existed in oxidative states, and composites formed because of the reaction between doped metal ions and TiO2. The absorption spectroscopy of TiO2doped with zinc was mainly in ultraviolet region, close to that of the pure TiO2. While for TiO2doped with other transition metal ions including V, Cr, Mn, Fe, Co, Ni and Cu ions, the absorption spectroscopies covered ultraviolet region and visible light region, much broader than that of the pure TiO2.

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