A5037810980- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Solid-state spectroscopy and crystallography
- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Crystal Structures and Properties
- Catalysis and Oxidation Reactions
- Luminescence and Fluorescent Materials
- Magnetic and transport properties of perovskites and related materials
- Inorganic Fluorides and Related Compounds
- Organic and Molecular Conductors Research
- Luminescence Properties of Advanced Materials
- Nanomaterials for catalytic reactions
- Catalytic Processes in Materials Science
- Coral and Marine Ecosystems Studies
- Electrospun Nanofibers in Biomedical Applications
- Crystallization and Solubility Studies
- Sulfur Compounds in Biology
- Gas Sensing Nanomaterials and Sensors
- Semiconductor Quantum Structures and Devices
- Thermal Expansion and Ionic Conductivity
- X-ray Diffraction in Crystallography
- Supercapacitor Materials and Fabrication
University of the Basque Country
2016-2025
Polymat
2016-2025
Kyoto University
2022-2024
Kyoto University Institute for Chemical Research
2022-2024
Helmholtz-Zentrum Berlin für Materialien und Energie
2020-2024
Centre for Electrochemical Technologies
2016-2019
Ayuntamiento de San Sebastián
2019
Abstract Large datasets are now ubiquitous as technology enables higher-throughput experiments, but rarely can a research field truly benefit from the data generated due to inconsistent formatting, undocumented storage or improper dissemination. Here we extract all meaningful device peer-reviewed papers on metal-halide perovskite solar cells published so far and make them available in database. We collect over 42,400 photovoltaic devices with up 100 parameters per device. then develop...
Abstract Tin halide perovskites attract incremental attention to deliver lead‐free perovskite solar cells. Nevertheless, disordered crystal growth and low defect formation energy, related Sn(II) oxidation Sn(IV), limit the efficiency stability of Engineering processing from precursor solution preparation film crystallization is crucial tackle these issues enable full photovoltaic potential tin perovskites. Herein, ionic liquid n ‐butylammonium acetate (BAAc) used tune coordination with...
Tin-halide perovskites have great potential as photovoltaic materials, but their performance is hampered by undesirable oxidation of Sn(<sc>ii</sc>) to Sn(<sc>iv</sc>). NMR proves DMSO be a main cause oxidation.
Abstract Due to their outstanding optoelectronic properties, lead-based halide perovskite materials have been applied as efficient photoactive in solution-processed solar cells. Current record efficiencies offer the promise surpass those of silicon However, uncertainty about potential toxicity and facile dissolution water requires a search for new alternative perovskite-like materials. Thanks foresight scientists experience preparation, remarkable results obtained short period time using...
Abstract Self‐assembled monolayers (SAMs) have displayed great potential for improving efficiency and stability in p–i–n perovskite solar cells (PSCs). The anchoring of SAMs at the conductiv metal oxide substrates their interaction with materials must be rationally tailored to ensure efficient charge carrier extraction improved quality films. Herein, molecules different groups spacers control mixed Sn–Pb PSCs are selected. It is found that monolayer carboxylate group exhibits appropriate has...
Mixed tin-lead (Sn-Pb) perovskites have attracted the attention of community due to their narrow bandgap, ideal for photovoltaic applications, especially tandem solar cells. However, oxidation and rapid crystallization Sn
Tin is the frontrunner for substituting toxic lead in perovskite solar cells. However, tin suffers detrimental oxidation of SnII to SnIV . Most reported strategies employ SnF2 precursor solution prevent formation. Nevertheless, working mechanism this additive remains debated. To further elucidate it, we investigate fluoride chemistry halide perovskites by complementary analytical tools. NMR analysis discloses a strong preferential affinity anions over , selectively complexing it as SnF4 Hard...
Tin is one of the most promising alternatives to lead make lead-free halide perovskites for optoelectronics. However, stability tin-based hindered by oxidation Sn(II) Sn(IV). Recent works established that dimethyl sulfoxide, which best-performing solvents processing perovskite, primary source tin oxidation. The quest a stable solvent could be game-changer in perovskites. Starting from database over 2000 solvents, we identified series 12 new suitable formamidinium iodide perovskite (FASnI3)...
Controlling the crystallization of perovskite in a thin film is essential making solar cells. Processing tin-based films from solution challenging because uncontrollable faster tin than most used lead perovskite. The best performing devices are prepared by depositing dimethyl sulfoxide it slows down assembly tin-iodine network that forms However, while seems to control crystallization, oxidizes during processing. This work demonstrates 4-(tert-butyl) pyridine can replace without oxidizing...
Interfaces in thin-film photovoltaics play a pivotal role determining device efficiency and longevity. In this work, the top surface treatment of mixed tin-lead (≈1.26 eV) halide perovskite films for p-i-n solar cells is studied. Charge extraction promoted by treating with piperazine. This compound reacts organic cations at surface, modifying structure tuning interfacial energy level alignment. addition, combined C60 pyrrolidine tris-acid (CPTA) reduces hysteresis leads to efficiencies up...
Halide perovskites are crystalline semiconductors with exceptional optoelectronic properties, rapidly developing toward large-scale applications. Lead (II) (Pb
Interface-induced nonradiative recombination losses at the perovskite/electron transport layer (ETL) are an impediment to improving efficiency and stability of inverted (p-i-n) perovskite solar cells (PSCs). Tridecafluorohexane-1-sulfonic acid potassium (TFHSP) is employed as a multifunctional dipole molecule modify surface. The solid coordination hydrogen bonding efficiently passivate surface defects, thereby reducing recombination. induced positive between ETLs improves energy band...
Abstract A variety of novel chemically modified fullerenes, showing different electron‐accepting capabilities, has been synthesized and used to prepare electron transport layer (ETL)‐free solar cells based on perovskite/fullerene blends. In particular, isoxazolino[60] fullerenes are proven be a good candidate for processing blend films with CH 3 NH PbI obtaining enhanced power conversion efficiency (PCE) ETL‐free perovskite (PSCs), improving the state‐of‐the‐art PCE (i.e., 14.3 %) this...
Abstract The solution processing of pinhole‐free methylammonium lead triiodide perovskite–C 70 fullerene (MAPbI 3 :C ) blend films on fluorine‐doped tin oxide (FTO)‐coated glass substrates is presented. Based this approach, a simplified and robust protocol for the preparation efficient electron‐transport layer (ETL)‐free perovskite solar cells described. Power conversion efficiency (PCE) 13.6 % under AM 1.5 G simulated sunlight demonstrated these devices. Comparative impedance spectroscopy...
Perovskite interfaces critically influence the final performance of photovoltaic devices. Optimizing them by reducing defect densities or improving contact with charge transporting material is key to further enhance efficiency and stability perovskite solar cells. Inverted (p–i–n) devices can particularly benefit here, as evident from various successful attempts. However, every reported strategy adapted specific cell structures compositions, affecting their robustness applicability other...
Abstract Metal halide perovskite solar cells may work for application in extreme temperatures, such as those experienced under extraterrestrial conditions. However, device performances temperatures are poorly investigated. This systematically explores the performance of between −160 and 150 °C. In situ grazing‐incidence wide‐angle X‐ray scattering discloses phase transition crystal disordering dominant factors temperature‐dependent efficiency deterioration. It is shown that lattice strain...
Mixed tin–lead perovskites suffer from several degradation pathways that hinder their effective implementation in tandem photovoltaic technologies. The main challenge involves removing the thermally unstable methylammonium cation perovskite composition and simultaneously increasing oxidation resistance of tin-based material. This study employs a multicomponent approach to address these issues, developing methylammonium-free solar cells with improved efficiency stability. incorporation...
Abstract Developing efficient wide‐bandgap perovskites is critical to exploit the benefits of a multi‐absorber solar cell and engineering commercially attractive tandem cells. Here, robust, additive‐free, methylammonium‐free triple halide composition for fabrication close‐to‐ideal (1.64 eV) reported. The introduction low percentages chloride into perovskite layer avoided photoinduced segregation lead an evident improvement in crystallization process, reaching enhanced open‐circuit voltages...
The power conversion efficiency of tin-based halide perovskite solar cells is limited by large photovoltage losses arising from the significant energy-level offset between and conventional electron transport material, fullerene C60. derivative indene-C60 bisadduct (ICBA) a promising alternative to mitigate this drawback, owing its superior energy level matching with most perovskites. However, less finely controlled disorder ICBA films leads extension band tails that limits resultant devices...
High defect concentrations at the interfaces are basis of charge extraction losses and instability in perovskite solar cells. Surface engineering with organic cations is a common practice to solve this issue. However, full implications counteranions these for device functioning often neglected. In work, we used 4-fluorophenethylammonium cation varying halide modification both methylammonium-free Pb-based n-i-p devices, observing significant differences among iodide, bromide, chloride. The...
Beyond the use of fullerenes as electron-transporting layers in perovskite solar cells, their introduction into a active layer has been ascertained very promising strategy for device improvement. In this sense, Perspective summarizes studies which perovskite:fullerene systems were employed, covering different methodologies introducing inside layer. particular, fill factor was most benefited parameter, ascribed to minimized pinhole density and fullerene passivating role. We discussed...