Dual-heterodyne Kelvin probe force microscopy [PDF]
Beilstein Journal of Nanotechnology, 2023 We present a new open-loop implementation of Kelvin probe force microscopy (KPFM) that provides access to the Fourier spectrum of the time-periodic surface electrostatic potential generated under optical (or electrical) pumping with an atomic force ...
Benjamin Grévin +3 more
doaj +5 more sources
Visualization of π-hole in molecules by means of Kelvin probe force microscopy [PDF]
Nature Communications, 2023 Submolecular charge distribution significantly affects the physical-chemical properties of molecules and their mutual interaction. One example is the presence of a π-electron-deficient cavity in halogen-substituted polyaromatic hydrocarbon compounds, the
B. Mallada +7 more
doaj +3 more sources
High-speed mapping of surface charge dynamics using sparse scanning Kelvin probe force microscopy [PDF]
Nature Communications, 2023 Unraveling local dynamic charge processes is vital for progress in diverse fields, from microelectronics to energy storage. This relies on the ability to map charge carrier motion across multiple length- and timescales and understanding how these ...
Marti Checa +14 more
doaj +3 more sources
Pulsed Force Kelvin Probe Force Microscopy-A New Type of Kelvin Probe Force Microscopy under Ambient Conditions. [PDF]
J Phys Chem C Nanomater InterfacesKelvin probe force microscopy (KPFM) is an increasingly popular scanning probe microscopy technique used for nanoscale imaging of surface potential for various materials, such as metals, semiconductors, biological samples, and photovoltaics, to reveal their surface work function and/or local accumulation of charges.
Zahmatkeshsaredorahi A, Jakob DS, Xu XG.
europepmc +4 more sources
AC Kelvin Probe Force Microscopy Enables Charge Mapping in Water. [PDF]
ACS Nano, 2022 Mapping charged chemical groups at the solid–liquid interface is important in many areas, ranging from colloidal systems to biomolecular interactions.
Hackl T, Schitter G, Mesquida P.
europepmc +2 more sources
High–low Kelvin probe force spectroscopy for measuring the interface state density [PDF]
Beilstein Journal of Nanotechnology, 2023 The recently proposed high–low Kelvin probe force microscopy (KPFM) enables evaluation of the effects of semiconductor interface states with high spatial resolution using high and low AC bias frequencies compared with the cutoff frequency of the carrier ...
Ryo Izumi +3 more
doaj +2 more sources
Modelling of Kelvin probe surface voltage and photovoltage in dielectric-semiconductor interfaces
Materials Research Express, 2022 The characterisation of dielectric-semiconductor interfaces via Kelvin probe surface voltage and photovoltage has become a widespread method of extracting the electrical properties influencing optoelectronic devices.
Ruy Sebastian Bonilla
doaj +2 more sources
Quantification of electron accumulation at grain boundaries in perovskite polycrystalline films by correlative infrared-spectroscopic nanoimaging and Kelvin probe force microscopy. [PDF]
Light Sci Appl, 2021 Organic–inorganic halide perovskites are emerging materials for photovoltaic applications with certified power conversion efficiencies (PCEs) over 25%.
Qin TX +7 more
europepmc +2 more sources
Energy-Level Alignment at Interfaces between Transition-Metal Dichalcogenide Monolayers and Metal Electrodes Studied with Kelvin Probe Force Microscopy. [PDF]
J Phys Chem C Nanomater Interfaces, 2021 We studied the energy-level alignment at interfaces between various transition-metal dichalcogenide (TMD) monolayers, MoS2, MoSe2, WS2, and WSe2, and metal electrodes with different work functions (WFs).
Markeev PA +6 more
europepmc +2 more sources
Direct measurement of surface photovoltage by AC bias Kelvin probe force microscopy [PDF]
Beilstein Journal of Nanotechnology, 2022 Surface photovoltage (SPV) measurements are a crucial way of investigating optoelectronic and photocatalytic semiconductors. The local SPV is generally measured consecutively by Kelvin probe force microscopy (KPFM) in darkness and under illumination, in ...
Masato Miyazaki +2 more
doaj +2 more sources