Surface photovoltage microscopy for map** charge separation on photocatalyst particles

R Chen, C Ni, J Zhu, F Fan, C Li - Nature Protocols, 2024 - nature.com
Solar-driven photocatalytic reactions offer a promising route to clean and sustainable
energy, and the spatial separation of photogenerated charges on the photocatalyst surface …

Organic optoelectronic materials: mechanisms and applications

O Ostroverkhova - Chemical reviews, 2016 - ACS Publications
Organic (opto) electronic materials have received considerable attention due to their
applications in thin-film-transistors, light-emitting diodes, solar cells, sensors, photorefractive …

Imaging photogenerated charge carriers on surfaces and interfaces of photocatalysts with surface photovoltage microscopy

R Chen, F Fan, T Dittrich, C Li - Chemical Society Reviews, 2018 - pubs.rsc.org
Understanding photogenerated charge separation on the nano-to micrometer scale is the
key to optimizing the photocatalytic solar energy conversion efficiency. In the past few years …

Unraveling charge‐separation mechanisms in photocatalyst particles by spatially resolved surface photovoltage techniques

R Chen, F Fan, C Li - Angewandte Chemie International …, 2022 - Wiley Online Library
The photocatalytic conversion of solar energy offers a potential route to renewable energy,
and its efficiency relies on effective charge separation in nanostructured photocatalysts …

How the formation of interfacial charge causes hysteresis in perovskite solar cells

SAL Weber, IM Hermes, SH Turren-Cruz… - Energy & …, 2018 - pubs.rsc.org
In this study, we discuss the underlying mechanism of the current–voltage hysteresis in a
hybrid lead-halide perovskite solar cell. We have developed a method based on Kelvin …

Local time-dependent charging in a perovskite solar cell

VW Bergmann, Y Guo, H Tanaka… - … applied materials & …, 2016 - ACS Publications
Efficient charge extraction within solar cells explicitly depends on the optimization of the
internal interfaces. Potential barriers, unbalanced charge extraction, and interfacial trap …

Towards nanoscale electrical measurements in liquid by advanced KPFM techniques: a review

L Collins, JI Kilpatrick, SV Kalinin… - Reports on Progress in …, 2018 - iopscience.iop.org
Fundamental mechanisms of energy storage, corrosion, sensing, and multiple biological
functionalities are directly coupled to electrical processes and ionic dynamics at solid–liquid …

Probing charge screening dynamics and electrochemical processes at the solid–liquid interface with electrochemical force microscopy

L Collins, S Jesse, JI Kilpatrick, A Tselev… - Nature …, 2014 - nature.com
The presence of mobile ions complicates the implementation of voltage-modulated scanning
probe microscopy techniques such as Kelvin probe force microscopy (KPFM). Overcoming …

Direct observation and quantitative analysis of mobile Frenkel defects in metal halide perovskites using scanning Kelvin probe microscopy

ST Birkhold, JT Precht, R Giridharagopal… - The Journal of …, 2018 - ACS Publications
Ion migration is seen as a primary stability concern of halide perovskite-based photovoltaic
and optoelectronic devices. Here, we provide experimental studies of long-distance …

Breaking the time barrier in Kelvin probe force microscopy: fast free force reconstruction using the G-mode platform

L Collins, M Ahmadi, T Wu, B Hu, SV Kalinin, S Jesse - ACS nano, 2017 - ACS Publications
Atomic force microscopy (AFM) offers unparalleled insight into structure and material
functionality across nanometer length scales. However, the spatial resolution afforded by the …