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A redox-switchable catalyst with an 'unplugged' redox tag
(Royal Society of Chemistry, 2022-08-24)
Two bis-(propyl-imidazolium)-napthalenediimide (NDI) salts were prepared and used as N-heterocyclic carbene (NHC) precursors for the preparation of dimetallic complexes of rhodium and iridium. Infrared spectroelectrochemical ...
Push-PullElectronicEffectsin Surface-ActiveSites EnhanceElectrocatalyticOxygenEvolutionon TransitionMetalOxides
(WileyWiley-VCH Verlag, 2021-01-19)
Sustainable electrocatalysis of the oxygen evolution reaction (OER) constitutes a major challenge for the realization of green fuels. Oxides based on Ni and Fe in alkaline media have been proposed to avoid using critical ...
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 ...
Gel–Polymer Electrolytes Based on Poly(Ionic Liquid)/Ionic Liquid Networks
(American Chemical Society, 2021-01-08)
The use of electrically charged, polymerized ionic liquids (polyILs) offers opportunities for the development of gel–polymer electrolytes (GPEs), but the rational design of such systems is in its infancy. In this work, we ...
Energy Spotlight. Stabilization of Perovskite Solar Cells
(American Chemical Society, 2021-11-12)
Long-term operational stability remains a major challenge in the commercialization of perovskite solar cells (PSCs). While the major thrust of recent research effort has been on understanding the degradation mechanism, ...
Homogeneous and inhomogeneous broadening in single perovskite nanocrystals investigated by micro-photoluminescence
(ElsevierNorth-Holland, 2021-09-10)
Metal halides with perovskite crystalline structure have given rise to efficient optoelectronic and photonic devices. In the present work, we have studied the light emission properties of single CsPbBr3 and CsPbI3 semiconductor ...
Stabilization of Black Perovskite Phase in FAPbI3 and CsPbI3
(American Chemical Society, 2020-05-28)
Although halide perovskites allow a great versatility, the application on single-absorber solar cells restricts significantly the number of available materials. In this context, CsPbI3 and FAPbI3 (FA, formamidinium) present ...
Interfacial Engineering at Quantum Dot-Sensitized TiO2 Photoelectrodes for Ultrahigh Photocurrent Generation
(American Chemical Society, 2021-02-01)
Metal oxide semiconductor/chalcogenide quantum dot (QD) heterostructured photoanodes show photocurrent densities >30 mA/cm2 with ZnO, approaching the theoretical limits in photovoltaic (PV) cells. However, comparative ...
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 ...
Surface versus Bulk Currents and Ionic Space-Charge Effects in CsPbBr3 Single Crystals
(American Chemical Society, 2022-04-25)
CsPbBr3 single crystals have potential for application in ionizing-radiation detection devices due to their optimal optoelectronic properties. Yet, their mixed ionic–electronic conductivity produces instability and hysteretic ...