A5102416333- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Chalcogenide Semiconductor Thin Films
- Surface Modification and Superhydrophobicity
- Solid-state spectroscopy and crystallography
- Organic Light-Emitting Diodes Research
- Advanced Data Compression Techniques
- Advanced Wireless Network Optimization
- Video Coding and Compression Technologies
- CCD and CMOS Imaging Sensors
- Wireless Communication Networks Research
- Electrospun Nanofibers in Biomedical Applications
- Aerosol Filtration and Electrostatic Precipitation
- IPv6, Mobility, Handover, Networks, Security
- Machine Learning in Materials Science
- Advanced MIMO Systems Optimization
- ZnO doping and properties
- 2D Materials and Applications
- Molecular Communication and Nanonetworks
- Network Security and Intrusion Detection
- Electronic and Structural Properties of Oxides
- Software-Defined Networks and 5G
Tan Kah Kee Innovation Laboratory
2023-2025
Xiamen University
2018-2025
Collaborative Innovation Center of Chemistry for Energy Materials
2018-2025
City University of Hong Kong
2024-2025
Xiamen University of Technology
2023-2024
Hangzhou Dianzi University
2023-2024
Vision Technology (United States)
2024
Beijing Jiaotong University
2022-2023
Institute of Technology of Cambodia
2019
Orange (France)
2010-2017
Perovskite solar cells (PSCs) have reached certified efficiencies of up to 23.7% but suffered from frailness and instability when exposed ambient atmosphere. Zinc oxide (ZnO), used as electron transport layer (ETL) on PSCs, gives rise excellent electronic, optic, photonic properties, yet the Lewis basic nature ZnO surface leads deprotonation perovskite layer, resulting in serious degradation PSCs using ETL. Here, we report a simple effective strategy convert into ZnS at ZnO/perovskite...
Research on solvent chemistry, particularly for halide perovskite intermediates, has been advancing the development of solar cells (PSCs) toward commercial applications. A predictive understanding effects formation is thus essential. This work systematically discloses relationship among basicity solvents, solvent-contained intermediate structures, and intermediate-to-perovskite α-FAPbI3 evolutions. Depending their basicity, solvents exhibit own favorite bonding selection with FA+ or Pb2+...
Crown ether effectively stabilizes the cubic phase of CsPbI<sub>3</sub> to inhibit moisture invasion and transformation films, producing large-area devices improving device performance.
Abstract FACs‐based (FA + , formamidinium and Cs cesium) perovskite solar cells have gained great attention due to their remarkable light thermal stabilities toward practical application of modules. However, the moisture instability difficulty in scalable fabrication are still main obstacles blocking photovoltaic applications current status. Here, employment novel interaction between crown ether with metal cations is introduced tailor uniform growth inhibit invasion during crystallization...
Abstract Organic–inorganic halide perovskites are emerging materials for photovoltaic applications with certified power conversion efficiencies (PCEs) over 25%. Generally, the microstructures of perovskite critical to performances PCEs. However, role nanometer-sized grain boundaries (GBs) that universally existing in polycrystalline films could be benign or detrimental solar cell performance, still remains controversial. Thus, nanometer-resolved quantification charge carrier distribution...
Chemical encapsulation by bifunctional molecules is used to effectively protect perovskite-involved multi-interfaces of perovskite solar modules, resulting in high efficiency and stability comparable that commercialized silicon cells.
A multifunctional molecule at interface was explored to inhibit phase separation and passivate defects, producing perovskite solar cells with efficiencies of 21.82% (0.05 cm 2 ) 18.05% (1.92 1.67 eV bandgap excellent stability.
Abstract Perovskite solar cells (PeSCs) using FAPbI 3 perovskite films often exhibit unfavorable phase transitions and defect‐induced nonradiative interfacial recombination, resulting in considerable energy loss impairing the performance of PeSCs terms efficiency, stability, hysteresis. In this work, a facile interface engineering strategy to control surface structure energy‐level alignment by tailoring between film hole‐transporting layer 4‐hydroxypicolinic acid (4HPA) is reported....
Metal halide perovskite materials inherently possess imperfections, particularly under nonequilibrium conditions, such as exposure to light or heat. To tackle this challenge, we introduced stearate ligand-capped nickel oxide (NiOx), a redox-sensitive metal with variable valence, into intermediate films. The integration of NiOx improved the efficiency and stability solar cells (PSCs) by offering multifunctional roles: (1) chemical passivation for ongoing defect repair, (2) energetic bolster...
Developing strategies to manage ion-migration-induced phase segregation in wide-bandgap (WBG) perovskites is crucial for achieving high-performance perovskite-silicon tandem solar cells (TSCs). However, maintaining continuous suppression of from the film crystallization process device operation remains a significant challenge. The present study demonstrates an efficient strategy activating halogen circulation WBG perovskite by using agents (HCA) N-halosuccinimide molecules as sustainable...
Perovskite films prepared with CH3NH2 molecules under ambient conditions have led to rapid fabrication of perovskite solar cells (PSCs), but there remains a lack mechanistic studies and inconsistencies operability in their production. Here the crystal structure CH3NH2-CH3NH3PbI3 was analyzed involve hydrogen bonds (CH3NH2···CH3NH3+) has guided facile, reproducible preparation high-quality conditions. Hydrogen within CH3NH2···CH3NH3+ dimers were found intermediates, accompanied by 1D-PbI3-...
The preparation of solution-processed metal halide perovskites is interwoven with research on their intermediate chemistry. In this Perspective, molecule-level insights are provided into how Lewis base additives (LBAs), e.g., DMSO and NMP, facilitate powder-to-film formation processes (i.e., the chemical origin structures, structural evolution intermediate-to-perovskite phase transition, device-based application intermediate-evolved perovskites). LBAs interact acid species (cationic A+ or...
Abstract As an inorganic hole transport material (HTM), nickel oxide (NiO x ) is widely used in perovskite solar cells (PSCs) due to its low cost and intrinsic stability. However, on account of poor film formation perovskite, the power conversion efficiency (PCE) stability regular NiO ‐based PSCs a main obstacle for commercialization. Here, solution‐processed inorganic/organic hybrid transporting system developed resolve this issue, thereby improving PCE from 16.0% 21.2%....
Spiral cores are crucial for designing efficient hole transporting materials (HTMs) perovskite solar cells (PSCs), owing to their no-planar 3D architecture, high thermal stability, good solubility, and beneficial solid-state morphology. A lack of facile synthetic procedures the spiral core limited development novel stable HTMs. In this regard, a one-step reaction is adopted produce several acceptor-embedded containing electron-withdrawing carbonyl group embedded orthogonal conformation....
Abstract Li‐TFSI doped spiro‐OMeTAD is widely recognized as a beneficial hole transport layer (HTL) in perovskite solar cells (PSCs), contributing to high device efficiencies. However, the uncontrolled migration of lithium ions (Li + ) during operation has impeded its broad adoption scalable and stable photovoltaic modules. Herein, an additive strategy proposed by employing ferrocenium hexafluorophosphate (FcPF 6 relay medium enhance extraction capability via instant oxidation function....
Abstract Ionic hybrid perovskites face challenges in maintaining their structural stability against non‐equilibrium phase degradation, therefore, it is essential to develop effective ways reinforce corner‐shared [PbI 6 ] 4− octahedral units. To strengthen stability, redox‐active functional polyoxometalates (POMs) are developed and incorporated into perovskite solar cells (PSCs) form a robust polyoxometalates/perovskite interlayer for stabilizing the phase. This approach offers several...
Great importance has been attached to magnetoelectric coupling in multiferroic thin films owing their extremely practical use a new generation of devices. Here, film [(n-C3H7)4N][FeIIIFeII(dto)3] (1; dto = C2O2S2) was fabricated using simple stamping process. As revealed by our experimental results, in-plane ferroelectricity over wide temperature range from 50 300 K induced electron hopping between FeII and FeIII sites. This mechanism further confirmed the ferroelectric observation compound...
Based on previous experimental results, machine learning is employed to intelligently screen interface materials for use in PSCs at the atomic level. The results of high-throughput predictions were validated via DFT calculations and experiments.