A5003532647- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Perovskite Materials and Applications
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Fullerene Chemistry and Applications
- Boron and Carbon Nanomaterials Research
- Inorganic Chemistry and Materials
- Graphene research and applications
- Organic Light-Emitting Diodes Research
- Nanocomposite Films for Food Packaging
- Crystallography and molecular interactions
- Solid-state spectroscopy and crystallography
- Silk-based biomaterials and applications
- Meat and Animal Product Quality
- Carbon Nanotubes in Composites
- Molecular Junctions and Nanostructures
- Antimicrobial agents and applications
- Organic Electronics and Photovoltaics
- Microencapsulation and Drying Processes
- Nanoplatforms for cancer theranostics
- Microbial Inactivation Methods
- Advanced battery technologies research
- Pigment Synthesis and Properties
University of Oxford
2023-2025
Kyoto University Institute for Chemical Research
2020-2024
Kyoto University
2020-2024
Huazhong University of Science and Technology
2018-2024
Kyoto Bunkyo University
2024
Instituto de Investigaciones Químicas
2024
Shanghai Ocean University
2014-2017
Shenzhen Institutes of Advanced Technology
2016-2017
Chinese Academy of Sciences
2016-2017
This work provides an efficient way to facilitate both electron and hole extraction in the designated interfaces of perovskite solar cells. A record power conversion efficiency 23.6% for mixed Sn–Pb cell devices is realized.
Abstract The toxicity of lead perovskite hampers the commercialization perovskite-based photovoltaics. While tin is a promising alternative, facile oxidation tin(II) to tin(IV) causes high density defects, resulting in lower solar cell efficiencies. Here, we show that tin(0) nanoparticles precursor solution can scavenge impurities, and demonstrate this treatment leads effectively tin(IV)-free films with strong photoluminescence prolonged decay lifetimes. These are generated by selective...
Hole-collecting monolayers have drawn attention in perovskite solar cell research due to their ease of processing, high performance, and good durability. Since molecules the hole-collecting monolayer are typically composed functionalized π-conjugated structures, hole extraction is expected be more efficient when π-cores oriented face-on with respect adjacent surfaces. However, strategies for reliably controlling molecular orientation remain elusive. In this work, multiple phosphonic acid...
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...
Abstract Metal halide perovskite semiconductors are excellent materials for next-generation solar cells. As a result of research and development all over the world, photoelectric conversion efficiency single-cell devices has rapidly improved to 26% (as July 2023), while record silicon-on-perovskite tandem currently stands at 33.7% (reported in May 2023). Materials chemistry made many important contributions toward these remarkable results. In this account, we will introduce our achievements...
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...
All-perovskite tandem photovoltaics are a potentially cost-effective technology to power chemical fuel production, such as green hydrogen. However, their application is limited by deficits in open-circuit voltage and, more challengingly, poor operational stability of the photovoltaic cell. Here we report laboratory-scale solar-assisted water-splitting system using an electrochemical flow cell and all-perovskite solar We begin treating perovskite surface with propane-1,3-diammonium iodide...
Mixed lead-tin (Pb-Sn) halide perovskites with optimum band gaps near 1.3 eV are promising candidates for next-generation solar cells. However, the performance of cells fabricated Pb-Sn is restricted by facile oxidation Sn(ii) to Sn(iv), which induces self-doping. Maltol, a naturally occurring flavor enhancer and strong metal binding agent, was found effectively suppress Sn(iv) formation passivate defects in mixed perovskite films. When used combination scavenging, maltol surface treatment...
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...
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...
In an effort to produce scale-up of edible films, collagen-based films including different amounts sodium alginate (CS) were prepared by casting method. Films characterized based on their rheological, thermal, and mechanical properties, water vapor permeability (WVP), oxygen (OP). The microstructures also evaluated scanning electron microscopy (SEM), atomic force (AFM), Fourier transform-infrared spectroscopy (FTIR). Furthermore, the addition effectively improved viscosity thermal stability,...
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...
Abstract Hole‐collecting monolayers have greatly advanced the development of positive‐intrinsic‐negative perovskite solar cells (p‐i‐n PSCs). To date, however, most anchoring groups in reported monolayer materials are designed to bind transparent conductive oxide (TCO) surface, resulting less availability for other functions such as tuning wettability surface. In this work, we developed two anchorable molecules, 4PATTI‐C3 and 4PATTI‐C4 , by employing a saddle‐like indole‐fused...
While (111)-dominated perovskite films hold the potential for high-stability solar cells, most studies have primarily focused on modulating (111) facets, overlooking distribution and formation mechanism of nondominant (100) facets. In this study, we delve into orientation via solvent regulation investigate evolution facet using various diffraction techniques. The findings reveal that simply stacking facets does not inherently enhance cells. Instead, in significantly influences both...