Band offsets of HfO2/ZnO interface: In situ x-ray photoelectron spectroscopy measurement and ab initio calculation

2009 ◽  
Vol 95 (16) ◽  
pp. 162104 ◽  
Author(s):  
Q. Chen ◽  
M. Yang ◽  
Y. P. Feng ◽  
J. W. Chai ◽  
Z. Zhang ◽  
...  
Keyword(s):  
Ab Initio ◽  
Photoelectron Spectroscopy ◽  
Ab Initio Calculation ◽  
Band Offsets ◽  
X Ray ◽  
Spectroscopy Measurement

Measurement of ZnO/Al 2 O 3 Heterojunction Band Offsets by in situ X-Ray Photoelectron Spectroscopy

2013 ◽  
Vol 30 (11) ◽  
pp. 118201 ◽  
Author(s):  
Hong-Wen Lei ◽  
Hong Zhang ◽  
Xue-Min Wang ◽  
Yan Zhao ◽  
Da-Wei Yan ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Band Offsets ◽  
X Ray

scholarly journals X‐ray photoelectron spectroscopy measurement of valence‐band offsets for Mg‐based semiconductor compounds

1994 ◽  
Vol 64 (25) ◽  
pp. 3455-3457 ◽  
Author(s):  
M. W. Wang ◽  
J. F. Swenberg ◽  
M. C. Phillips ◽  
E. T. Yu ◽  
J. O. McCaldin ◽  
...  
Keyword(s):  
Valence Band ◽  
Photoelectron Spectroscopy ◽  
Band Offsets ◽  
X Ray ◽  
Spectroscopy Measurement ◽  
Semiconductor Compounds

scholarly journals In situ monitoring of the influence of water on DNA radiation damage by near-ambient pressure X-ray photoelectron spectroscopy

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Marc Benjamin Hahn ◽  
Paul M. Dietrich ◽  
Jörg Radnik
Keyword(s):  
Dna Damage ◽  
Radiation Damage ◽  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
In Situ Monitoring ◽  
Strong Increase ◽  
Oh Radicals ◽  
Strand Breaks ◽  
X Ray

AbstractIonizing radiation damage to DNA plays a fundamental role in cancer therapy. X-ray photoelectron-spectroscopy (XPS) allows simultaneous irradiation and damage monitoring. Although water radiolysis is essential for radiation damage, all previous XPS studies were performed in vacuum. Here we present near-ambient-pressure XPS experiments to directly measure DNA damage under water atmosphere. They permit in-situ monitoring of the effects of radicals on fully hydrated double-stranded DNA. The results allow us to distinguish direct damage, by photons and secondary low-energy electrons (LEE), from damage by hydroxyl radicals or hydration induced modifications of damage pathways. The exposure of dry DNA to x-rays leads to strand-breaks at the sugar-phosphate backbone, while deoxyribose and nucleobases are less affected. In contrast, a strong increase of DNA damage is observed in water, where OH-radicals are produced. In consequence, base damage and base release become predominant, even though the number of strand-breaks increases further.

In situ Hard X-ray Photoelectron Spectroscopy on the Origin of Irreversibility in Electrochromic LixWO3 Thin Films

2021 ◽  
pp. 150898
Author(s):  
Makoto Takayanagi ◽  
Takashi Tsuchiya ◽  
Shigenori Ueda ◽  
Tohru Higuchi ◽  
Kazuya Terabe
Keyword(s):  
Thin Films ◽  
Photoelectron Spectroscopy ◽  
X Ray

Incorporation and Role of Nitrogen During Oxynitridation of Silicon Studied by Photoelectron Spectroscopy

1999 ◽  
Vol 567 ◽  
Author(s):  
Masayuki Suzuki ◽  
Yoji Saito
Keyword(s):  
Photoelectron Spectroscopy ◽  
High Vacuum ◽  
Oxide Films ◽  
Silicon Surfaces ◽  
Gaseous Mixtures ◽  
X Ray ◽  
Initial Stage ◽  
Thermal Stability Of

ABSTRACTWe tried direct oxynitridation of silicon surfaces by remote-plasma-exited nitrogen and oxygen gaseous mixtures at 700°C in a high vacuum. The oxynitrided surfaces were investigated with in-situ X-ray photoelectron spectroscopy. With increase of the oxynitridation time, the surface density of nitrogen gradually increases, but that of oxygen shows nearly saturation behavior after the rapid increase in the initial stage. We also annealed the grown oxynitride and oxide films to investigate the role of the contained nitrogen. The desorption rate of oxygen from the oxynitride films is much less than that from oxide films. We confirmed that nitrogen stabilizes the thermal stability of these oxynitride films.

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