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Impact of Oxygen Vacancy Occupancy on Charge Carrier Dynamics in BiVO4 Photoanodes
(American Chemical Society, 2019-11-27)
Oxygen vacancies are ubiquitous in metal oxides and critical to performance, yet the impact of these states upon charge carrier dynamics important for photoelectrochemical and photocatalytic applications remains contentious ...
Electrodeposited NiO anode interlayers: Enhancement of the charge carrier selectivity in organic solar cells
(Elsevier, 2013-10)
Nickel oxide (NiO) thin films prepared by cathodic electrodeposition exhibit superior electrical performace than PEDOT:PSS when used as anode interlayers of bulk-heterojunction solar cells. Devices incorporating 30 nm-thick ...
Negative Capacitance and Inverted Hysteresis: Matching Features in Perovskite Solar Cells
(American Chemical Society, 2020-10-01)
Negative capacitance in the low-frequency domain and inverted hysteresis are familiar features in perovskite solar cells, which origin is still under discussion. Here we use impedance spectroscopy to analyze these responses ...
Hydrophobic Pulmonary Surfactant Proteins SP-B and SP-C Induce Pore Formation in Planar Lipid Membranes: Evidence for Proteolipid Pores
(Biophysical Society, 2013-01-08)
Pulmonary surfactant is a complex mixture of lipids and specific surfactant proteins, including the hydrophobic proteins SP-B and SP-C, in charge of stabilizing the respiratory surface of mammalian lungs. The combined ...
Selective contacts drive charge extraction in quantum dot solids via asymmetry in carrier transfer kinetics
(Nature Publishing Group, 2013)
Colloidal quantum dot solar cells achieve spectrally selective optical absorption in a thin layer of solution-processed, size-effect tuned, nanoparticles. The best devices built to date have relied heavily on drift-based ...
Electrical pumping of potassium ions against an external concentration gradient in a biological ion channel
(AIP Publishing, 2013-07-22)
We show experimentally and theoretically that significant currents can be obtained with a biological ion channel, the OmpF porin of Escherichia coli, using zero-average potentials as driving forces. The channel rectifying ...
Mechanism of carrier accumulation in perovskite thin-absorber solar cells
(Nature Publishing Group, 2013)
Photovoltaic conversion requires two successive steps: accumulation of a photogenerated charge and charge separation. Determination of how and where charge accumulation is attained and how this accumulation can be identified ...
Nano-enabled photovoltaics. Progress in materials and methodologies
(American Chemical Society, 2013)
Nanoenabled photovoltaics consist of a family of related approaches to make solar cells that use nanosized material elements, involving a combination of inorganic and organic components and hard and soft matter, including ...
Elucidating Operating Modes of Bulk-Heterojunction Solar Cells from Impedance Spectroscopy Analysis
(American Chemical Society, 2013)
We discuss the progress and challenges in the application of impedance spectroscopy analysis to determine key processes and parameters in organic bulk-heterojunction solar cells. When carrier transport or outer interface ...
Access resistance in protein nanopores. A structure-based computational approach
(Elsevier, 2020-02)
Single-channel conductance measurements in biological pores have demonstrated the importance of interfacial effects in nanopores, particularly in protein channels with low aspect ratio (length over aperture radius). Access ...