A5012678478- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Solid-state spectroscopy and crystallography
- Organic Electronics and Photovoltaics
- Advancements in Solid Oxide Fuel Cells
- Organic Light-Emitting Diodes Research
- Catalytic Cross-Coupling Reactions
- Advanced Thermoelectric Materials and Devices
- Iron-based superconductors research
- Engineering Applied Research
- Analytical Chemistry and Sensors
- Silicon and Solar Cell Technologies
- Advanced Sensor and Energy Harvesting Materials
- Urban Heat Island Mitigation
- Polyoxometalates: Synthesis and Applications
- Marine and environmental studies
- ZnO doping and properties
- Supercapacitor Materials and Fabrication
- Organometallic Complex Synthesis and Catalysis
- Air Quality Monitoring and Forecasting
- Metal Extraction and Bioleaching
- Synthetic Organic Chemistry Methods
- Organic and Molecular Conductors Research
IMEC
2022-2025
Hasselt University
2022-2025
École Polytechnique Fédérale de Lausanne
2020-2024
University of Cyprus
2023-2024
Fraunhofer Institute for Ceramic Technologies and Systems
2023
Austrian Institute of Technology
2023
Max Planck Institute for the Science of Light
2023
University of Luxembourg
2022
Laboratoire de Réactivité et Chimie des Solides
2018-2020
Université de Picardie Jules Verne
2018-2020
This review provides an overview of factors affecting film morphology and how together with device architecture they impact perovskite cell performance.
Abstract The cost‐effective processability and high efficiency of the organic–inorganic metal halide perovskite solar cells (PSCs) have shown tremendous potential to intervene positively in generation clean energy. However, prior an industrial scale‐up process, there are certain critical issues such as lack stability against over moisture, light, heat, which be resolved. One several proposed strategies improve that has lately emerged is development lower‐dimensional (2D) structures derived...
The use of molecular modulators to reduce the defect density at surface and grain boundaries perovskite materials has been demonstrated be an effective approach enhance photovoltaic performance device stability solar cells. Herein, we employ crown ethers modulate films, affording passivation undercoordinated defects. This interaction elucidated by solid-state nuclear magnetic resonance functional theory calculations. ether hosts induce formation host-guest complexes on which reduces...
Cost management and toxic waste generation are two key issues that must be addressed before the commercialization of perovskite optoelectronic devices. We report a groundbreaking strategy for eco-friendly cost-effective fabrication highly efficient solar cells. This involves usage high volatility co-solvent, which dilutes precursors to lower concentration (<0.5 M) while retaining similar film quality device performance as (>1.4 solution. More than 70% material cost can reduced. Mechanistic...
The inverted p-i-n perovskite solar cells hold high promise for scale-up toward commercialization. However, the interfaces between and charge transport layers contribute to major power conversion efficiency (PCE) loss instability. Here, we use a single material of 2-thiopheneethylammonium chloride (TEACl) molecularly engineer both interface fullerene-C60 electron layer buried NiOx-based hole layer. dual modification results in optimized band alignment, suppressed nonradiative recombination,...
The defects located at the interfaces and grain boundaries (GBs) of perovskite films are detrimental to photovoltaic performance stability solar cells. Manipulating crystallization process tailoring with molecular passivators main effective strategies mitigate loss instability. Herein, a new strategy is reported manipulate FAPbI3 -rich by incorporating small amount alkali-functionalized polymers into antisolvent solution. synergic effects alkali cations poly(acrylic acid) anion effectively...
Three novel hole-conducting molecules (T101, T102 and T103) based on a triptycene core have been synthesized using short routes with high yields. The optical electrochemical properties were tuned by modifying the functional groups, through linking to diphenylamines via phenyl and/or thienyl groups. mesoporous perovskite solar cells fabricated T103 as hole transporting material (HTM) showed power conversion efficiency (PCE) of 12.24% 12.38%, respectively, which is comparable that obtained...
Solar cells based on organic–inorganic lead iodide perovskite (CH3NH3PbI3) exhibit remarkably high power conversion efficiency (PCE). One of the key issues in solution-processed films is that often polycrystalline domain orientation not well-defined, which makes it difficult to predict energy alignment and charge transfer efficiency. Here we combine ab initio calculations photoelectron spectroscopy unravel electronic structure redistribution at interface between different surfaces CH3NH3PbI3...
Hole-transporting materials for perovskite solar cells are reviewed and the possibility of rationally designing a cost-effective high performing material discussed.
Abstract Formamidinium lead iodide perovskites are promising light-harvesting materials, yet stabilizing them under operating conditions without compromising optimal optoelectronic properties remains challenging. We report a multimodal host–guest complexation strategy to overcome this challenge using crown ether, dibenzo-21-crown-7, which acts as vehicle that assembles at the interface and delivers Cs + ions into interior while modulating material. This provides local gradient of doping...
We present a facile molecular-level interface engineering strategy to augment the long-term operational and thermal stability of perovskite solar cells (PSCs) by tailoring between hole transporting layer (HTL) with multifunctional ligand 2,5-thiophenedicarboxylic acid. The exhibited high (maximum powering point tracking at one sun illumination) stabilized TS80 (the time over which device efficiency reduces 80% after initial burn-in) ≈5950 h 40 °C power conversion (PCE) 23%. origin...
α-Formamidinium lead iodide (α-FAPbI3 ) is one of the most promising candidate materials for high-efficiency and thermally stable perovskite solar cells (PSCs) owing to its outstanding optoelectrical properties high thermal stability. However, achieving a form α-FAPbI3 where both composition phase are pure very challenging. Herein, we report on combined strategy precursor engineering grain anchoring successfully prepare methylammonium (MA)-free phase-pure films. The incorporation volatile...
Abstract Improving the performances of photovoltaic (PV) devices by suppressing nonradiative energy losses through surface defect passivation and enhancing stability to level standard PV represents one critical challenge for perovskite solar cells. Here, reported are advantages introducing a tetrapropylammonium (TPA + ) cation that combines two key functionalities, namely CH 3 NH PbI nanocrystals strong ionic interaction with bulk via formation type I heterostructure acts as recombination...
Abstract The performance of perovskite solar cells is highly dependent on the fabrication method; thus, controlling growth mechanism crystals a promising way towards increasing their efficiency and stability. Herein, multi‐cation halide composition engineered via two‐step sequential deposition method. Strikingly, it found that adding mixtures 1D polymorphs orthorhombic δ‐RbPbI 3 δ‐CsPbI to PbI 2 precursor solution induces formation porous mesostructured hexagonal films. This porosity greatly...
Abstract The ongoing global research and development efforts on perovskite solar cells (PSCs) have led the power conversion efficiency to a high record of 26.1%. optimization PSC processing methods, new compositions, introduction passivation strategies are key factors behind meteoric rise in performance. In particular, defect mitigation ion migration via molecular engineering interfaces played critical role enhancing photovoltaic performance operational stability PSCs. interface enabling...
The presence of defects at the interface between perovskite film and carrier transport layer poses significant challenges to performance stability solar cells (PSCs). Addressing this issue, we introduce a dual host-guest (DHG) complexation strategy modulate both bulk interfacial properties FAPbI
Abstract A facile and eco‐friendly dimethyl sulfoxide‐mediated solution aging (DMSA) treatment is presented to control the crystallization dynamics of methylammonium (MA)‐free wide‐bandgap (WBG) perovskite films, enhancing film quality, morphology for high‐performance tandem solar cells. The comprehensive structural, morphological, characterization analyses reveal that DMSA significantly enhances composition homogeneity while suppressing halide segregation. Consequently, opaque,...
Abstract Efficient manipulation of crystallization and control over defects are crucial for optimizing the performance durability perovskite solar cells (PSCs). In this study, a novel organic multifunctional additive, 2‐(furan‐3‐yl)ethanamine hydrochloride (FFEACl), is introduced which plays pivotal role in regulating process FAPbI 3 . Incorporating FFEACl into precursor solution effectively suppresses formation undesirable non‐perovskite phase impurities while promoting oriented α‐phase...
A novel hole-transporting molecule (F101) based on a furan core has been synthesized by means of short, high-yielding route. When used as the material (HTM) in mesoporous methylammonium lead halide perovskite solar cells (PSCs) it produced better device performance than current state-of-the-art HTM 2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene (spiro-OMeTAD). The F101-HTM-based exhibited both slightly higher Jsc (19.63 vs. 18.41 mA cm(-2) ) and Voc (1.1 1.05 V)...
Perovskite-based photovoltaics (PVs) have garnered tremendous interest, enabling power conversion efficiencies exceeding 25%. Although much of this success is credited to the exploration new compositions, defects passivation and process optimization, environmental stability remains an important bottleneck be solved. The underlying mechanisms thermal humidity-induced degradation are still far from a clear understanding, which poses severe limitation overcome issues. Herein, in situ X-ray...
The defects present in metal halide perovskite are deleterious to both the performance and stability of photovoltaic devices. Consequently, there is an intense focus on developing defect mitigation strategies. Herein we report a facile strategy that employs methylammonium triiodide (MAI3) as additive precursor solution. We examine effect MAI3 structural optoelectronic properties by X-ray diffraction, density functional theory calculations, molecular dynamics simulations, solid-state nuclear...
The systematic advances in the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs) have been driven by developments materials, electron transport layer (ETL) interfacial passivation between relevant layers. While zinc oxide (ZnO) is a promising ETL thin film photovoltaics, it still highly desirable to develop novel synthetic methods that allow both fine‐tuning versatility ZnO nanomaterials improving ZnO/perovskite interface. Among various inorganic organic...
Metal halide perovskites have the potential to revolutionize field of photovoltaics, though limited stability has impeded commercial exploitation. The soft heterointerface between perovskite and charge-transporting layer is one major bottlenecks that limits operational stability. Here, we present rationally designed molecular modulators synergistically improve α-FAPbI3-based solar cells while retaining power conversion efficiency (PCE) 24.0% with a high open-circuit voltage (VOC) ∼1.195 V....