A5044846040- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- CO2 Reduction Techniques and Catalysts
- Optical Coatings and Gratings
- Solid-state spectroscopy and crystallography
- Nanofabrication and Lithography Techniques
- Chalcogenide Semiconductor Thin Films
- Advanced Photocatalysis Techniques
- Conducting polymers and applications
- Photovoltaic System Optimization Techniques
- Solar Radiation and Photovoltaics
- Surface Roughness and Optical Measurements
- Advancements in Photolithography Techniques
- Copper-based nanomaterials and applications
- Covalent Organic Framework Applications
- Silicon and Solar Cell Technologies
- 2D Materials and Applications
- Ionic liquids properties and applications
- Organic Electronics and Photovoltaics
- Optical Polarization and Ellipsometry
- Ammonia Synthesis and Nitrogen Reduction
- Supercapacitor Materials and Fabrication
- Advanced Battery Materials and Technologies
- Photonic and Optical Devices
- Energy Load and Power Forecasting
Saudi Aramco (United States)
2020-2025
Saudi Aramco (Saudi Arabia)
2017-2024
King Abdullah University of Science and Technology
2012-2024
Dhahran Health Center
2018-2020
Laboratoire des Technologies de la Microélectronique
2009
Université Claude Bernard Lyon 1
2009
Université Jean Monnet
2007-2009
CEA Grenoble
2009
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2009
Centre National de la Recherche Scientifique
2009
Twenty-micrometer-thick single-crystal methylammonium lead triiodide (MAPbI3) perovskite (as an absorber layer) grown on a charge-selective contact using solution space-limited inverse-temperature crystal growth method yields solar cells with power conversion efficiencies reaching 21.09% and fill factors of up to 84.3%. These devices set new record for open avenue achieving high in cells.
Lead halide perovskite solar cells (PSCs) have advanced rapidly in performance over the past decade. Single-crystal PSCs based on micrometers-thick grain-boundary-free films with long charge carrier diffusion lengths and enhanced light absorption (relative to polycrystalline films) recently emerged as candidates for advancing further toward their theoretical limit. To date, preferred method grow MAPbI3 single-crystal involves solution processing at temperatures ≳120 °C, which adversely...
Zero-dimensional perovskite-related structures (0D-PRS) are a new frontier of perovskite-based materials. 0D-PRS, commonly synthesized in powder form, manifest distinctive optical properties such as strong photoluminescence (PL), narrow emission line width, and high exciton binding energy. These make 0D-PRS compelling for several types optoelectronic applications, including phosphor screens electroluminescent devices. However, it would not be possible to rationally design the chemistry...
Cuprous oxide (Cu2O) is one of the most promising materials for photoreduction CO2 because its high conduction band and small gap, which enable production high-potential electrons under visible-light irradiation. However, it difficult to reduce using a Cu2O-based photocatalyst due fast charge recombination low photostability. In this work, we enhanced photocatalytic conversion activity Cu2O by hybridization NWAs, carbon layers, BiVO4 nanoparticles. By construction Z-scheme flow on 3-D NWA...
This study provides a significant enhancement in CO2 photoconversion efficiency by the functionalization of reduced graphene oxide/cadmium sulfide composite (rGO/CdS) with amine. The amine-functionalized graphene/CdS (AG/CdS) was obtained two steps. First, oxide (GO) selectively deposited via electrostatic interaction CdS nanoparticles modified 3-aminopropyltriethoxysilane. Subsequently, ethylenediamine (NH2C2H4NH2) grafted an N,N′-dicyclohexylcarbodiimide coupling reaction between amine...
Abstract Use of Cu and + is one the most promising approaches for production C 2 products by electrocatalytic CO reduction reaction (CO RR) because it can facilitate activation CC dimerization. However, selective electrosynthesis 2+ on 0 Cu interfaces critically limited due to low ethanol relative ethylene. In this study, a novel porous Cu/Cu O aerogel network introduced afford high productivity RR. The synthesized simple chemical redox precursor reducing agent. RR results reveal that...
The difficulty of growing perovskite single crystals in configurations suitable for efficient photovoltaic devices has hampered their exploration as solar cell materials, despite potential to advance technology beyond polycrystalline films through markedly lower defect densities and desirable optoelectronic properties. While film absorbers can be deposited on myriad substrates, fit high-efficiency have only been demonstrated hydrophobic hole-transport layers [HTLs, e.g., poly(triaryl amine)...
A facile and low‐temperature (125 °C) solution‐processed Al‐doped ZnO (AZO) buffer layer functioning very effectively as electron accepting/hole blocking for a wide range of polymer:fullerene bulk heterojunction systems, yielding power conversion efficiency in excess 10% (8%) on glass (plastic) substrates is described. The ammonia‐treatment the aqueous AZO nanoparticle solution produces compact, crystalline, smooth thin films, which retain aluminum doping, eliminates/reduces native defects...
Abstract CsPb 2 Br 5 is a ternary halogen‐plumbate material with close characteristics to the well‐reported halide perovskites. Owing its unconventional two‐dimensional structure, being looked at broadly for potential applications in optoelectronics. investigations are currently limited nanostructures and powder forms of material, which present unclear conflicting optical properties. In this study, we synthesis characterization bulk single crystals, enabled us finally clarify material's...
Highly transparent and UV-resistant superhydrophobic arrays of SiO2-coated ZnO nanorods are prepared in a sequence low-temperature (<150 °C) steps on both glass thin sheets PET (2 × 2 in.2), the nanocomposite is shown to have minimal impact solar cell device performance under AM1.5G illumination. Flexible plastics can serve as front backing materials manufacture flexible displays cells.
The development of photocatalysts CO2 reduction based on stable and Earth-abundant materials is essential for utilizing solar energy storing it in chemical forms. Here, we report the synthesis characterization a composite material consisting few layers MoS2 hierarchical porous structure mesoporous TiO2 macroporous 3D graphene aerogel (TGM) as high-performance, robust, noble-metal-free photocatalyst reduction. contributed to high photocatalytic catalyst performance, which was investigated by...
Organic–inorganic hybrid perovskite materials have recently evolved into the leading candidate solution-processed semiconductor for solar cells due to their combination of desirable optical and charge transport properties. Chief among these properties is long carrier diffusion length, which essential optimizing device architecture performance. Herein, we used time-resolved photoluminescence (at low excitation fluence, 10.59 μJ·cm–2 upon two-photon excitation), most accurate direct approach...
Ruthenium (Ru) is the most widely used metal as an electrocatalyst for nitrogen (N2 ) reduction reaction (NRR) because of relatively high N2 adsorption strength successive reaction. Recently, it has been well reported that homogeneous Ru-based alloys such RuRh, RuPt, and RuCo significantly enhance selectivity formation rate ammonia (NH3 ). However, combinations NRR have limited to several miscible metals with Ru, although various immiscible immense potential show performance. In this...
Achieving high electrochemical conversion of carbon dioxide (CO2) into valuable fuels and chemicals is one the most promising directions to address environmental energy challenges. Although several single-crystal based studies simulation results have reported that rich in steps on Cu (100) surfaces are favorable convert toward C2 alcohol products, still stuck low-index facets or surface defect-derived low density step-sites. In present work, we report production ethanol by synthesizing a...
Although the electroconversion of carbon dioxide (CO2 ) into ethanol is considered to be one most promising ways using CO2 , selectivity less than 50% because difficulties in designing an optimal catalyst that arise from complicated pathways for electroreduction ethanol. Several approaches including fabrication oxide-derived structures, atomic surface control, and Cu+ /Cu interfaces have been primarily used produce . Here, a combined structure with high-facets as electrocatalysts constructed...
We synthesized two types of MAPbI3 single-crystal films with dominant (001) and (100) surface orientations for solar cells. found that both have efficient hole transfer into poly(triaryl)amine (PTAA), as evident from the reduced photoluminescence (PL) intensity lifetime, well type-II energy alignment. Unlike a film strong PL quenching due to electron phenyl-C61-butyric acid methyl ester (PCBM), exhibits an increase in presence PCBM, which can be attributed passivation. Interestingly,...
The solution process is the most widely used method to prepare perovskite absorbers for high performance solar cells due its ease fabrication and low capital cost. However, an insufficient level of reproducibility often a concern. Complex precursor chemistry likely one main reasons issue. Here we report effects triple cation lead mixed-halide aging on quality resulting films device performance. Our study revealed that has great influence colloidal size distribution solution, which then...
Carbothermal shock can produce a high surface coverage of metal nanoparticles by introducing cellulose.
Abstract The fabrication of perovskite solar cells (PSCs) through blade coating is seen as one the most viable paths toward commercialization. However, relative to less scalable spin method, process often results in more defective films with lower grain uniformity. Ion migration, facilitated by those elevated defect levels, main triggers phase segregation and device instability. Here, a bifunctional molecule, p ‐aminobenzoic acid (PABA), which enhances barrier ion induces growth along (100)...
A new semiconductor-based photocatalytic reactor design with optimized pressure and flow rates on both sides of an intermediately placed catalyst enhances mass transport, accelerates CO desorption prevents photocatalyst deactivation.
Recently, the trend in inverted hybrid perovskite solar cells (PVSCs) has been to utilize NiOx as hole transport layers. However, majority of reported solution-processed films require a high-temperature thermal annealing process, which is unfavorable for large-scale manufacturing and suffers from lack uniformity. We report, first time, e-beam evaporation low-temperature vacuum process deposition layers PVSCs. Device characterization shows that efficiency on par with methods, highest at 15.4%...