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Impedance Spectroscopy Dynamics of Biological Neural Elements: From Memristors to Neurons and Synapses
American Chemical Society (2021-09-09)Understanding the operation of neurons and synapses is essential to reproducing biological computation. Building artificial neuromorphic networks opens the door to a new generation of faster and low-energy-consuming ... -
Impedance Spectroscopy Measurements in Perovskite Solar Cells: Device Stability and Noise Reduction
American Chemical Society (2018) -
Impedance Spectroscopy of Metal Halide Perovskite Solar Cells from the Perspective of Equivalent Circuits
American Chemical Society (2021-12-08)Impedance spectroscopy (IS) provides a detailed understanding of the dynamic phenomena underlying the operation of photovoltaic and optoelectronic devices. Here we provide a broad summary of the application of IS to metal ... -
Impedance spectroscopy of perovskite/contact interface: Beneficial chemical reactivity effect
AIP Publishing (2019-09-25)Understanding chemical reactivity of lead halide perovskite materials with contacts is crucial to improve the stability of these optoelectronic devices. The study of the physical and chemical interactions at the interfacial ... -
Improved Photoelectrochemical Performance of WO3/BiVO4 Heterojunction Photoanodes via WO3 Nanostructuring
American Chemical Society (2023-11-15)WO3/BiVO4 heterojunction photoanodes can be efficiently employed in photoelectrochemical (PEC) cells for the conversion of water into molecular oxygen, the kinetic bottleneck of water splitting. Composite WO3/BiVO4 ... -
Improved solar water splitting performance of BiVO4 photoanode by the synergistic effect of Zr-Mo co-doping and FeOOH Co-catalyst layer
Elsevier (2022)In this work, Zr-Mo co-doping was successfully employed on electrochemically deposited BiVO4 photoanodes, and tested for photoelectrochemical (PEC) water oxidation. Zr doping induced the formation of relatively smaller ... -
Improved Stability of Inverted and Flexible Perovskite Solar Cells with Carbon Electrode
American Chemical Society (2020-06-02)We demonstrate highly efficient, stable, and flexible perovskite solar cells of large areas, utilizing a carbon back-contact electrode in a p–i–n cell configuration. We enabled good electronic contact at the interface with ... -
Improving Catalyst Activity in Hydrocarbon Functionalization by Remote Pyrene-Graphene Stacking
Wiley (2019)A copper complex bearing an N-heterocyclic carbene ligand with a pyrene "tail" attached to the backbone has been prepared and supported on reduced graphene oxide (rGO). The free and supported copper materials have been ... -
Improving the Back Surface Field on an Amorphous Silicon Carbide Thin‐Film Photocathode for Solar Water Splitting
Wiley-VCH Verlag (2018-06-11)Amorphous silicon carbide (a‐SiC:H) is a promising material for photoelectrochemical water splitting owing to its relatively small band‐gap energy and high chemical and optoelectrical stability. This work studies the ... -
In Operando, Photovoltaic, and Microscopic Evaluation of Recombination Centers in Halide Perovskite-Based Solar Cells
American Chemical Society (2022-08-03)The origin of the low densities of electrically active defects in Pb halide perovskite (HaP), a crucial factor for their use in photovoltaics, light emission, and radiation detection, remains a matter of discussion, in ... -
In situ ethanolamine ZnO nanoparticle passivation for perovskite interface stability and highly efficient solar cells
MDPI (2022-02-28)Zinc oxide (ZnO) has interesting optoelectronic properties, but suffers from chemical instability when in contact with perovskite interfaces; hence, the perovskite deposited on the top degrades promptly. Surface passivation ... -
In the Limelight: Perspective Collections on Perovskites
American Chemical Society (2017-08)In our inaugural “ In the Limelight ” Viewpoint, we revisited five high-impact papers that were published in The Journal of Physical Chemistry Letters ( JPC Letters ) in 2014, and we noted that four of the five were written ... -
Increasing the Performance and Stability of Red-Light-Emitting Diodes Using Guanidinium Mixed-Cation Perovskite Nanocrystals
American Chemical Society (2023-05-09)Halide perovskite nanocrystals (PNCs) exhibit growing attention in optoelectronics due to their fascinating color purity and improved intrinsic properties. However, structural defects emerging in PNCs progressively hinder ... -
Inductive and capacitive hysteresis of current-voltage curves: unified structural dynamics in solar energy devices, memristors, ionic transistors, and bioelectronics
American Physical Society (2024-01-08)Hysteresis observed in the current-voltage curves of both electronic and ionic devices is a phenomenon where the curve's shape is altered on the basis of the measurement speed. This effect is driven by internal processes ... -
Inductive Loop in the Impedance Response of Perovskite Solar Cells Explained by Surface Polarization Model
American Chemical Society (2017-03)The analysis of perovskite solar cells by impedance spectroscopy has provided a rich variety of behaviors that demand adequate interpretation. Two main features have been reported: First, different impedance spectral arcs ... -
Influence of Charge Transport Layers on Open-Circuit Voltage and Hysteresis in Perovskite Solar Cells
Elsevier (2018-04)Perovskite materials have experienced an impressive improvement in photovoltaic performance due to their unique combination of optoelectronic properties. Their remarkable progression, facilitated by the use of different ... -
Inhibition of light emission from the metastable tetragonal phase at low temperatures in island-like films of lead iodide perovskites
Royal Society of Chemistry (2019)Photonic applications based on halide perovskites, namely CH3NH3PbI3 (MAPbI3), have recently attracted remarkable attention due to the high efficiencies reported for photovoltaic and light emitting devices. Despite these ... -
Inhomogeneous Broadening of Photoluminescence Spectra and Kinetics of Nanometer-Thick (Phenethylammonium)2PbI4 Perovskite Thin Films: Implications for Optoelectronics
American Chemical Society (2021-06-16)An outstanding potentiality of layered two-dimensional (2D) organic–inorganic hybrid perovskites (2DHPs) is in the development of solar cells, photodetectors, and light-emitting diodes. In 2DHPs, an exciton is localized ... -
Inkjet-Printed Red-Emitting Flexible LEDs Based on Sustainable Inks of Layered Tin Iodide Perovskite
Wiley (2024)Inkjet printing has emerged as a promising technique for the fabrication of halide perovskite (HP) thin films, as it enables precise and controlled deposition of the perovskite ink on a variety of substrates. One main ... -
Innovative Detection of Biomarkers Based on Chemiluminescent Nanoparticles and a Lensless Optical Sensor
MDPI (2024-04)The identification and quantification of biomarkers with innovative technologies is an urgent need for the precise diagnosis and follow up of human diseases. Body fluids offer a variety of informative biomarkers, which are ...