Electron-hole recombination on ZnO(0001) single-crystal surface studied by time-resolved soft X-ray photoelectron spectroscopy

2014 ◽  
Vol 105 (15) ◽  
pp. 151602 ◽  
Author(s):  
R. Yukawa ◽  
S. Yamamoto ◽  
K. Ozawa ◽  
M. Emori ◽  
M. Ogawa ◽  
...  
Keyword(s):  
Single Crystal ◽  
Photoelectron Spectroscopy ◽  
Crystal Surface ◽  
Single Crystal Surface ◽  
Electron Hole ◽  
Time Resolved ◽  
X Ray ◽  
Hole Recombination

scholarly journals Redox-driven atomic-scale changes in mixed catalysts: VOX/WOX/α-TiO2 (110)

RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 64608-64616 ◽  
Author(s):  
Z. Feng ◽  
M. E. McBriarty ◽  
A. U. Mane ◽  
J. Lu ◽  
P. C. Stair ◽  
...  
Keyword(s):  
Single Crystal ◽  
Crystal Surface ◽  
Oxide Catalysts ◽  
Atomic Scale ◽  
Redox Behavior ◽  
Single Crystal Surface ◽  
Tungsten Oxides ◽  
Mixed Monolayer ◽  
X Ray

X-ray study of vanadium–tungsten mixed-monolayer-oxide catalysts grown on the rutile α-TiO2 (110) single crystal surface shows redox behavior not observed for lone supported vanadium or tungsten oxides.

Proline adsorption on TiO2(110) single crystal surface: A study by high resolution photoelectron spectroscopy

2007 ◽  
Vol 601 (24) ◽  
pp. 5726-5731 ◽  
Author(s):  
G.J. Fleming ◽  
K. Adib ◽  
J.A. Rodriguez ◽  
M.A. Barteau ◽  
H. Idriss
Keyword(s):  
High Resolution ◽  
Single Crystal ◽  
Photoelectron Spectroscopy ◽  
Crystal Surface ◽  
Single Crystal Surface

The chemisorption of simple- and halogeno-substituted unsaturated hydrocarbons on the α-Fe(111) single crystal surface: photoelectron spectroscopic studies

1977 ◽  
Vol 356 (1684) ◽  
pp. 47-60 ◽  
Keyword(s):  
Single Crystal ◽  
Photoelectron Spectroscopy ◽  
Crystal Surface ◽  
High Energy ◽  
Spectroscopic Studies ◽  
Bond Breaking ◽  
Single Crystal Surface ◽  
Carbon Bond ◽  
Carbon Carbon Bond ◽  
Low Coverage

Low- and high-energy photoelectron spectroscopy demonstrates that ethylene and halogeno-substituted alkenes adsorb irreversibly and dissociatively on a Fe(111) single crystal surface at 300 K. Carbon-carbon bond breaking of acetylene is observed at low coverage and 300 K, the chemisorption régime at higher coverages being more complex.

Photoelectron spectroscopy, and low energy electron diffraction studies of the adsorption of dinitrogen, hydrogen and ammonia on a Fe(111) single crystal surface

1977 ◽  
Vol 356 (1684) ◽  
pp. 25-36 ◽  
Keyword(s):  
Electron Diffraction ◽  
Single Crystal ◽  
Photoelectron Spectroscopy ◽  
Crystal Surface ◽  
Nitride Layer ◽  
Low Energy ◽  
Energy Electron ◽  
Single Crystal Surface ◽  
Low Energy Electron Diffraction ◽  
Low Energy Electron

The chemisorption of dinitrogen, ammonia and hydrogen on the Fe (111) single crystal surface has been studied by low energy electron diffraction and high - and low - energy photoelectron spectroscopy. The clean surface is shown to be unreconstructed. Dinitrogen is chemisorbed with a low sticking probability of ca . 1 x 10 -7 at 420 K and 2 x 10 -7 at 470 K and an activation energy of ca . 20 kJ mol -1 ; evidence is presented that dinitrogen is completely dissociated at the surface. The ‘nitride’ layer shows no reaction when exposed to hydrogen at pressures of up to 10 -5 torr and temperatures up to 650 K. The chemisorption régime of ammonia is a mixed one: extensive dehydrogenation occurs at low coverage with associative sorption at higher coverage. Studies of the effects of preadsorption of hydrogen on the chemisorption of ammonia are summarized.

Heteroepitaxial Growth of In203 on Ysz (100) Single Crystal Surface

1999 ◽  
Vol 558 ◽  
Author(s):  
M. Orita ◽  
H. Ohta ◽  
H. Tanji ◽  
H. Hosono ◽  
H. Kawazoe
Keyword(s):  
Single Crystal ◽  
Crystal Surface ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Full Width ◽  
Half Maximum ◽  
Single Crystal Surface ◽  
Heteroepitaxial Growth ◽  
X Ray Diffraction ◽  
X Ray

ABSTRACTIn203 films were deposited on YSZ (001) single crystal surface at 800°C at an oxygen pressure of 14 Pa by pulsed laser deposition (PLD) method. A heteroepitaxial relationship between the film and the substrate was seen in TEM photographs and X-ray diffraction measurements. The w locking curve full width of half maximum (FWHM) of the In203 (004) x-ray diffraction was 0.06°. Film conductivities were ∼10 S/cm or less, while carriers on the order of lO18/cm3 were generated.

scholarly journals Angle-Resolved and Resonant Photoelectron Spectroscopy Study of Ni2P (10−10) Single-Crystal Surface

Hyomen Kagaku ◽  
2010 ◽  
Vol 31 (7) ◽  
pp. 324-330 ◽  
Author(s):  
Kazuyuki EDAMOTO ◽  
Hiroyuki INOMATA ◽  
Nobuyuki YASUNO ◽  
Ken-ichi OZAWA ◽  
Yuta NAKAGAWA ◽  
...  
Keyword(s):  
Single Crystal ◽  
Photoelectron Spectroscopy ◽  
Crystal Surface ◽  
Single Crystal Surface ◽  
Spectroscopy Study

Comparison of the Hafnium Diboride(0001) and Hafnium(0001) Surfaces

1996 ◽  
Vol 441 ◽  
Author(s):  
M. Belyansky ◽  
M. Trenary ◽  
S. Otani ◽  
T. Tanaka
Keyword(s):  
Thin Films ◽  
Photoelectron Spectroscopy ◽  
Crystal Surface ◽  
Epitaxial Thin Films ◽  
Single Crystal Surface ◽  
X Ray Diffraction ◽  
Hafnium Diboride ◽  
X Ray ◽  
Low Energy Electron Diffraction ◽  
Low Energy Electron

AbstractThe surface properties of the (0001) surfaces of single crystals of hafnium and hafnium diboride are compared with a boride film deposited on the Hf(0001) surface. The surfaces were characterized with X-ray photoelectron spectroscopy (XPS) and low energy electron diffraction (LEED). Boron deposition was achieved through the thermal decomposition of diborane. The deposited boron reacts with the hafnium substrate to form HfB2 as determined by XPS and the HfB2 films were found to be epitaxial as determined by LEED. The epitaxial nature of the thin films was confirmed with X-ray diffraction. The epitaxial thin films of HfB2 on Hf(0001) display properties identical to those of the HfB2(0001) single crystal surface.

scholarly journals Growth of sillenite Bi12FeO20 single crystals: structural, thermal, optical, photocatalytic features and first principle calculations

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Durga Sankar Vavilapalli ◽  
Ambrose A. Melvin ◽  
F. Bellarmine ◽  
Ramanjaneyulu Mannam ◽  
Srihari Velaga ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Photoelectron Spectroscopy ◽  
Diffraction Method ◽  
Lattice Parameter ◽  
First Principle ◽  
X Ray Diffraction ◽  
X Ray ◽  
First Principle Calculations ◽  
Photodegradation Efficiency

AbstractIdeal sillenite type Bi12FeO20 (BFO) micron sized single crystals have been successfully grown via inexpensive hydrothermal method. The refined single crystal X-ray diffraction data reveals cubic Bi12FeO20 structure with single crystal parameters. Occurrence of rare Fe4+ state is identified via X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). The lattice parameter (a) and corresponding molar volume (Vm) of Bi12FeO20 have been measured in the temperature range of 30–700 °C by the X-ray diffraction method. The thermal expansion coefficient (α) 3.93 × 10–5 K−1 was calculated from the measured values of the parameters. Electronic structure and density of states are investigated by first principle calculations. Photoelectrochemical measurements on single crystals with bandgap of 2 eV reveal significant photo response. The photoactivity of as grown crystals were further investigated by degrading organic effluents such as Methylene blue (MB) and Congo red (CR) under natural sunlight. BFO showed photodegradation efficiency about 74.23% and 32.10% for degrading MB and CR respectively. Interesting morphology and microstructure of pointed spearhead like BFO crystals provide a new insight in designing and synthesizing multifunctional single crystals.

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