Results 11 to 20 of about 81,692 (267)

Separation of surface oxide from bulk Ni by selective Ni 3p photoelectron spectroscopy for chemical analysis in coincidence with Ni M-edge Auger electrons

Scientific Reports, 2021
The chemical shift of core level binding energies makes electron spectroscopy for chemical analysis (ESCA) a workhorse analytical tool for science and industry. For some elements, close lying and overlapping spectral features within the natural life time
Artur Born, Fredrik O. L. Johansson, Torsten Leitner, Danilo Kühn, Andreas Lindblad, Nils Mårtensson, Alexander Föhlisch   +6 more
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Research on photosensitive gate ferroelectric integrated GaN HEMT photodetector

AIP Advances, 2021
In this paper, we take advantage of the high sensitivity of two-dimensional electron gas concentration in the heterojunction channel of a GaN high electron mobility transistor (HEMT) to device surface states and gate voltages.
Yanxu Zhu, Qixuan Li, Zhuang Yang, Cai Wang, Zhao Wei   +4 more
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Core-Level Spectroscopy of 2-Thiouracil at the Sulfur L₁- and L_2,3-Edges Utilizing a SASE Free-Electron Laser

Molecules, 2021
In this paper, we report X-ray absorption and core-level electron spectra of the nucleobase derivative 2-thiouracil at the sulfur L1- and L2,3-edges. We used soft X-rays from the free-electron laser FLASH2 for the excitation of isolated molecules and ...
Fabiano Lever, Dennis Mayer, Jan Metje, Skirmantas Alisauskas, Francesca Calegari, Stefan Düsterer, Raimund Feifel, Mario Niebuhr, Bastian Manschwetus, Marion Kuhlmann, Tommaso Mazza, Matthew Scott Robinson, Richard J. Squibb, Andrea Trabattoni, Måns Wallner, Thomas J. A. Wolf, Markus Gühr   +16 more
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Effects of multi-layer Ti/Al electrode and ohmic groove etching on ohmic characteristics of AlGaN/GaN HEMT devices

AIP Advances, 2021
This experiment studied the effects of multi-layer Ti/Al electrodes, ohmic groove etching, and annealing temperature on the ohmic characteristics, output characteristics, and surface topography of AlGaN/GaN high electron mobility transistor (HEMT ...
Yanxu Zhu, Jianwei Li, Qixuan Li, Xiaomeng Song, Zhangyang Tan, Jinheng Li   +5 more
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Preparation of ZnO/g-C3N4 composite photocatalyst and photocatalytic reduction of U(Ⅵ)

Cailiao gongcheng, 2022
Based on ZnO and melamine, the ZnO/g-C3N4 for photocatalytic U(Ⅵ) reduction was pre-pared by thermal polymerization methods. The surface morphology, lattice structure, element composition and photocatalytic efficiency were analyzed by SEM, XRD, XPS, PL ...
LEI Ming, LIU Yuelin, XIE Shuibo, GE Yujie, LIU Yingjiu   +4 more
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On the p-AlGaN/n-AlGaN/p-AlGaN Current Spreading Layer for AlGaN-based Deep Ultraviolet Light-Emitting Diodes

Nanoscale Research Letters, 2018
In this report, AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) with different p-AlGaN/n-AlGaN/p-AlGaN (PNP-AlGaN) structured current spreading layers have been described and investigated.
Jiamang Che, Chunshuang Chu, Kangkai Tian, Jianquan Kou, Hua Shao, Yonghui Zhang, Wengang Bi, Zi-Hui Zhang   +7 more
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Enhancing Both TM- and TE-Polarized Light Extraction Efficiency of AlGaN-Based Deep Ultraviolet Light-Emitting Diode via Air Cavity Extractor With Vertical Sidewall

IEEE Photonics Journal, 2018
In this work, we investigate the effect of sidewall angle, height and space of an air cavity extractor (AC-Extractor) on the polarization-dependent light extraction efficiency (LEE) for AlGaN-based deep-ultraviolet light-emitting diodes (DUV LEDs) using ...
Yonghui Zhang, Yuxin Zheng, Ruilin Meng, Ce Sun, Kangkai Tian, Chong Geng, Zi-Hui Zhang, Guoxu Liu, Wengang Bi   +8 more
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Research progress of TiO2 photocatalytic reduction of oxyanion pollutants in water: a mini review

Green Chemistry Letters and Reviews, 2022
Oxyanions-nitrate, bromate, and perchlorate in water bodies can do harms of different levels to human health. Photocatalytic reduction is one of the most promising and effective means to convert them into harmless ions.
Kai Su, Linxiao Li, Shaoqi Deng, Zihan Gao, Qirui Qin, Jingyu Yang, Shengli Zhang, Junmin Chen   +7 more
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Electron beams near surfaces: the concept of partial intensities for surface analysis and perspective on the low energy regime

Frontiers in Materials, 2023
Electron beam techniques are indispensable tools for the analysis of surfaces in fundamental as well as applied fields of science and technology. Significant improvements have been made in the past decades in the quantitative understanding of electron ...
Wolfgang S. M. Werner
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MAGNETO-OPTIC PROPERTIES AND OXIDATION/REDUCTION OF ULTRATHIN MAGNETIC FILMS: FE FILMS ON Pt(111)

ASEAN Journal on Science and Technology for Development, 2017
We have investigated magneto-optic properties of ultrathin Fe films grown on Pt(111) surfaces by using the in situ surface magneto-optic Kerr effect (SMOKE) and X-ray photoelectron spectroscopy (XPS).
T.-U. Nahm
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