A5100417595- Perovskite Materials and Applications
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Chalcogenide Semiconductor Thin Films
- Advanced Photocatalysis Techniques
- Advanced battery technologies research
- Solid-state spectroscopy and crystallography
- Analytical Chemistry and Sensors
- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Molecular Junctions and Nanostructures
- CO2 Reduction Techniques and Catalysts
- Additive Manufacturing and 3D Printing Technologies
- Welding Techniques and Residual Stresses
- Respiratory Support and Mechanisms
- Clinical Nutrition and Gastroenterology
- Covalent Organic Framework Applications
- Advancements in Solid Oxide Fuel Cells
- Advanced machining processes and optimization
- Luminescence and Fluorescent Materials
- Heat Transfer and Boiling Studies
- Intensive Care Unit Cognitive Disorders
- Thermal properties of materials
National Institute for Materials Science
2024
Nanjing Forestry University
2024
Shaanxi University of Science and Technology
2024
Wuhan National Laboratory for Optoelectronics
2019-2023
Huazhong University of Science and Technology
2019-2023
Nanjing University of Aeronautics and Astronautics
2023
Guangxi University
2022
Tiangong University
2022
Central South University
2022
University of Rochester
2022
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Abstract Controlling the crystallization of organic–inorganic hybrid perovskite is vital importance to achieve high performing solar cells. The growth mechanism perovskites has been intensively studied in devices with planar structures and traditional structures. However, for printable mesoscopic cells, it difficult study owing complicated mesoporous structure. Here, a solvent evaporation controlled method ideal structure provided. Combining results scanning electron microscope X‐ray...
Comprehensive Summary The organic solar cells (OSCs) based on block copolymer systems bear the hope of achieving optimal balance power conversion efficiency (PCE) and stability, but key index, PCE this type devices is still low. To improve efficiency, regulating thin‐film morphology always core engineering, which usually achieved via two aspects: precursor optimization post treatments. Herein, we extend our previous success in treatments (two step annealing) to a novel two‐in‐one annealing...
Abstract The low electrical conductivity and the high surface defect density of TiO 2 electron transport layer (ETL) limit power conversion efficiency (PCE) corresponding perovskite solar cells (PSCs). Here, modulation mesoporous (mp‐TiO ) ETL via oxygen vacancy (OV) management by reduction oxidation treatment are reported. Reduction reducing agent introduces abundant OVs into nanocrystalline particles on at subsurface. following hydrogen peroxide removes while remains subsurface OVs,...
Abstract The hole‐conductor‐free printable mesoscopic perovskite solar cells based on the inorganic scaffolds of mesoporous titania, zirconia, and porous carbon have attracted much attention due to their excellent stability low manufacturing cost. However, in such devices, transport photogenerated holes is dominated by diffusion‐assisted charge carrier movement, while driving force insufficient. Reinforcing built‐in electric field (BEF) an effective strategy promote oriented transport....
Abstract The printable mesoscopic perovskite solar cells consisting of a double layer metal oxides covered by porous carbon film have attracted attention due to their industrialization advantages. However, the tens‐of‐micrometer thickness triple scaffold leads challenge for crystallize and charge carriers separate travel electrode, which limits open circuit voltage ( V OC ) such devices. In this work, depth‐dependent post‐treatment strategy is demonstrated synergistically passivate defects...
Abstract Fast reaction between organic salt and lead iodide always leads to small perovskite crystallites concentrated defects. Here, polyacrylic acid is blended with salt, so as regulate the crystallization in a two‐step growth method. It observed that addition of retards aggregation behavior slows down rate PbI 2 , by which “slow‐release effect” defined. Such effect improves perovskite. X‐ray diffraction study shows that, after m acid, average crystallite size increases from ≈40 ≈90 nm,...
Abstract Polyvinyl pyrrolidone (PVP) is doped to PbI 2 and organic salt during two‐step growth of halideperovskite. It observed that PVP molecules can interact with both salt, reduce the aggregation crystallization two, then slow down coarsening rate perovskite. As doping concentration increases from 0 1 mM in average crystallite size perovskite decreases monotonously 90 34 nm; Surface fluctuation reduces 259.9 179.8 nm at first, increases; Similarly, surface roughness 45.55 26.64 rises....
Abstract With rocketing power conversion efficiency and continuously enhancing stability, perovskite solar cells (PSCs) have shown extraordinary potential to become a key player in tomorrow's energy industry. An essential approach improve the performance quantify loss mechanisms of PSCs is analysis charge carrier dynamics. Although structure diverse, characterization techniques for dynamic measurement are similar. aim providing researchers with necessary knowledge choose suitable methods,...
Abstract Die Umwandlung von CO 2 in Kraftstoffe mit Sonnenlicht ist ein vielversprechender Ansatz, Erderwärmungs‐ und Energievorratsprobleme zugleich zu lösen. Wesentlich hier die Gestaltung effizienter Photokatalysatoren hervorragenden speziellen Eigenschaften wie verlässlicher Lichtabsorptionsfähigkeit, hohem Redoxpotential, hoher Ladungstrennung ausgezeichneten Standzeiten. Bisher erfüllt kein Einkomponenten‐Photokatalysator alle diese Kriterien gleichzeitig. Eine Zielrichtung,...
Epitaxial growth technology has garnered widespread attention in the field of perovskite solar cells for its potential to produce high-quality crystals with preferred orientations and superior photoelectric properties. However, achieving rational epitaxial fabrication process still remains a challenging task. A thorough understanding fundamental principles an appreciation unique advantages main strategies are crucial effective application this technique realm metal halide perovskites....
The evolution from the original methylammonium (MA)‐ to formamidinium (FA)‐dominated perovskite makes a crucial contribution improve photoelectric performance of solar cells (PSCs) in decade. However, obtain α‐FAPbI 3 , annealing temperature above 100 °C is essential. In addition, it still challenging deposit uniform and high‐quality FA‐based absorber printable triple‐mesoscopic PSC due complicated mesoscopic structure. Herein, low‐temperature, two‐step sequential deposition method used for...
The chloride ion is widely used to improve the morphology and crystallization of perovskite film, but its influence on pathway still unclear. Here, Cl-assisted in mesoporous metal oxides unveiled by situ grazing incidence wide-angle X-ray scattering. characterizations suggest that Cl– ions can effectively delay formation intermediate MA2Pb3I8·2DMSO shorten existence time, promote conversion perovskite, ultimately significantly crystallinity mesoscopic structure. photoelectric properties...
Printable mesoscopic perovskite solar cells are usually fabricated by drop-casting precursor solution on a screen-printed mesoporous TiO2/ZrO2/carbon triple-layer followed thermal annealing. They have attracted much attention due to their simple fabrication process and remarkable stability. However, challenges lie in how achieve complete pore fillings of perovskites the meso-pores obtain high-quality crystals. Here, we report an situ crystal transfer (ICT) based gas-solid interaction deposit...
Perovskite solar cells (PSCs) have achieved a certified power conversion efficiency (PCE) of 25.5% and show potential for low‐cost photovoltaic applications. One key pushing PSCs into industrialization is enlarging their areas. However, the PCE larger‐area dramatically limited by undesired increase in series resistance ( R S ), which leads to obvious loss fill factor (FF). Herein, fully printable mesoscopic modulated with carbon electrode optimizing device geometry, preparing busbars collect...
A variety of N ‐hydrogenated/ ‐methylated pyridinium salts are elaborately designed and synthesized. Thermogravimetric X‐ray photoelectron spectra analysis indicate the intensities NH covalent bonds strengthened step‐by‐step from 3,3′‐(5′‐(3‐(pyridin‐3‐yl)phenyl)‐[1,1′:3′,1″‐terphenyl]‐3,3″‐diyl)dipyridine (Tm)‐HCl to Tm‐HBr then Tm‐TfOH, which results in gradually improved cathode interfacial modification abilities. The larger dipole moments + H containing moieties compared those CH 3...
We use 1-ethylpyridine chloride to successfully tune the crystallization process in MPSCs and improve PCE different perovskite composites.