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New Views on Carrier Diffusion and Recombination by Combining Small Perturbation Techniques: Application to BiVO4 Photoelectrodes
(Wiley, 2022)
Impedance spectroscopy (IS), intensity-modulated photocurrent spectroscopy (IMPS), and intensity-modulated photovoltage spectroscopy (IMVS) are well-established powerful modulated techniques to characterize optoelectronic ...
Amorphous Iron Oxyhydroxide Nanosheets: Synthesis, Li Storage, and Conversion Reaction Kinetics
(American Chemical Society, 2013)
We present a facile approach to synthesize amorphous iron oxyhydroxide nanosheet from the surfactant-assisted oxidation of iron sulfide nanosheet. The amorphous iron oxyhydroxide nanosheet is porous and has a high surface ...
Charge carrier transport and contact selectivity limit the operation of PTB7-based organic solar cells of varying active layer thickness
(Royal Society of Chemistry, 2013-08)
In this work we study the different electrical loss pathways occurring during the operation of bulk heterojunction solar cells by using a variety of electrical and optical characterization techniques beyond the current ...
Femtosecond-laser-irradiation-induced structural organization and crystallinity of Bi2WO6
(Nature Research, 2020)
Controlling the structural organization and crystallinity of functional oxides is key to enhancing
their performance in technological applications. In this work, we report a strong enhancement of
the structural organization ...
Mechanisms of charge accumulation in the dark operation of perovskite solar cells
(Royal Society of Chemistry, 2016)
In this work, a new current peak at forward bias in the dark current–voltage curves has been identified
for standard mesoscopic perovskite solar cells. This characteristic peak appears only under some specific
conditions, ...
The Swift Surge of Perovskite Photovoltaics
(American Chemical Society, 2013)
The breakthrough early 1990s dye sensitization of mesoscopic TiO2 films along with a regenerative iodide redox couple led to the explosive growth of dye-sensitized solar cell (DSC) research. The pioneering work of Grätzel ...
Diffusion-Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination
(Wiley-VCH, 2013-09-23)
The diffusion–recombination model is a key tool in understanding the photovoltaic operation of solar cells. Dye-sensitized solar cells, organic solar cells, and inorganic semiconductor solar cells are systems affected by ...
Revealing the contribution of singlet oxygen in the photoelectrochemical oxidation of benzyl alcohol
(Royal Society of Chemistry, 2021-02)
Photoelectrochemical approaches are finding use in the transformation of organic molecules beyond water oxidation and CO2 reduction. Among the different reactions that can be performed, the selective oxidation of alcohols ...
Calculation of the Energy Band Diagram of a Photoelectrochemical Water Splitting Cell
(American Chemical Society, 2014-11)
A physical model is presented for the semiconductor electrode of a photoelectrochemical cell. The model accounts for the potential drop in the Helmholtz layer and thus enables description of both band edge pinning and ...
Beyond Impedance Spectroscopy of Perovskite Solar Cells: Insights from the Spectral Correlation of the Electrooptical Frequency Techniques
(American Chemical Society, 2020-09-21)
Small perturbation techniques have proven to be useful tools for the investigation of perovskite solar cells. A correct interpretation of the spectra given by impedance spectroscopy (IS), intensity-modulated photocurrent ...