Results 91 to 100 of about 2,111,321 (211)

Implementation of data-cube pump–probe KPFM on organic solar cells

Beilstein Journal of Nanotechnology, 2020
An implementation of pump–probe Kelvin probe force microscopy (pp-KPFM) is reported that enables recording the time-resolved surface potential in single-point mode or over a 2D grid. The spectroscopic data are acquired in open z-loop configuration, which
Benjamin Grévin, Olivier Bardagot, Renaud Demadrille   +2 more
doaj   +1 more source

Mechanism of Polarization Fatigue in BiFeO3: the Role of Schottky Barrier

, 2013
By using piezoelectric force microscopy and scanning Kelvin probe microscopy, we have investigated the domain evolution and space charge distribution in planar BiFeO3 capacitors with different electrodes.
Chen, Lang, Guo, Rui, Lim, Zhi Shiuh, Wang, Junling, You, Lu, Yuan, Guoliang, Zhou, Yang, Zou, Xi   +7 more
core   +1 more source

Grain Boundaries Contribute to the Performance of Perovskite Solar Cells by Promoting Charge Separations

Nano-Micro Letters
Highlights Sub-micrometer-resolved photocurrent mapping in operational perovskite solar cells, achieved through our home-built photoluminescence and photocurrent imaging microscopy, reveals enhanced photocurrent at grain boundaries compared to grain ...
Peng Xu, Pengfei Wang, Minhuan Wang, Fengke Sun, Jing Leng, Yantao Shi, Shengye Jin, Wenming Tian   +7 more
doaj   +1 more source

Near-equilibrium measurement of quantum size effects using Kelvin probe force microscopy

, 2017
In nano-structures such as thin films electron confinement results in the quantization of energy levels in the direction perpendicular to the film. The discretization of the energy levels leads to the oscillatory dependence of many properties on the film
Hoffmann-Vogel, Regina, León, Carmen Pérez, Marz, Michael, Popp, Matthias, Späth, Thomas   +4 more
core   +1 more source

Topographic Mapping of the Quantum Hall Liquid using a Few-Electron Bubble

, 2000
A scanning probe technique was used to obtain a high-resolution map of the random electrostatic potential inside the quantum Hall liquid. A sharp metal tip, scanned above a semiconductor surface, sensed charges in an embedded two-dimensional electron gas.
Ashoori, R. C., Finkelstein, G., Glicofridis, P. I., Shayegan, M.   +3 more
core   +1 more source

On the robustness of the Kelvin probe based potentiometric hydrogen electrode method and its application in characterizing effective hydrogen activity in metal: 5 wt. % Ni cold-rolled ferritic steel as an example

Science and Technology of Advanced Materials, 2019
Quantitative detection of hydrogen in metal is important in providing a better basis for fundamental investigations of hydrogen embrittlement and hydrogen-related corrosion phenomena.
Chun-Hung Wu, Waldemar Krieger, Michael Rohwerder   +2 more
doaj   +1 more source

Effect of Mechanical Stress on the Properties of Steel Surfaces: Scanning Kelvin Probe and Local Electrochemical Impedance Study

, 2017
The influence of mechanical stress on the electrochemical properties of ferritic steel SAE 1008 and austenitic stainless steel 301LN was studied using Scanning Kelvin Probe and Localized Electroche ...
A. Nazarov, V. Vivier, D. Thierry, F. Vucko, B. Tribollet   +4 more
semanticscholar   +1 more source

Towards dark current suppression in metallic photocathodes by selected-area oxidation

Heliyon
Oxide-free surfaces of polycrystalline Cu are prepared using acetic acid etching after chemical-mechanical polishing. UV ozone treatment is shown to increase the work function of the cleaned Cu by up to 0.5 eV.
C. Benjamin, S.D. Seddon, M. Walker, L.B. Jones, T.C.Q. Noakes, G.R. Bell   +5 more
doaj   +1 more source

Simultaneous measurement of corrosion potential and hydrogen penetration using double-head scanning Kelvin probe

Electrochemistry Communications
High-strength steels, such as high-strength bolts or steel plates are considerably sensitive to hydrogen embrittlement. Serious safety problems in steel structures are possible, because they are exposed to atmospheric condition containing chloride ions ...
Kiyonobu Sugae, Yasuyo Otsuka, Takayuki Kamimura   +2 more
doaj   +1 more source

Study on Corrosion Behavior of Porous Pure Copper Based on Electrochemistry and Scanning Kelvin Probe. [PDF]

Materials (Basel), 2023
Chen X, Liao Q, Zuo H, Fu Q.
europepmc   +1 more source