A5035834577- Perovskite Materials and Applications
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- GaN-based semiconductor devices and materials
- Semiconductor Quantum Structures and Devices
- Nanowire Synthesis and Applications
- Organic Light-Emitting Diodes Research
- Photocathodes and Microchannel Plates
- Advanced Sensor and Energy Harvesting Materials
- Photonic Crystals and Applications
- ZnO doping and properties
- Semiconductor materials and devices
- Ga2O3 and related materials
- Carbon Nanotubes in Composites
- Advanced battery technologies research
- Advanced Photocatalysis Techniques
- Thin-Film Transistor Technologies
- Silicon Nanostructures and Photoluminescence
- Electrocatalysts for Energy Conversion
- Solid-state spectroscopy and crystallography
- Metabolomics and Mass Spectrometry Studies
- Metamaterials and Metasurfaces Applications
- Power Systems and Renewable Energy
Hong Kong Polytechnic University
2016-2025
Dalian Institute of Chemical Physics
2025
Chinese Academy of Sciences
2025
Donghua University
2024
Shenzhen Polytechnic
2020-2023
Anhui Agricultural University
2022-2023
First Affiliated Hospital of Xi'an Jiaotong University
2023
Fudan University
2023
Zhongshan Hospital
2023
Yangzhou University
2023
Unreacted lead iodide is commonly believed to be beneficial the efficiency of methylammonium perovskite based solar cells, since it has been proposed passivate defects in grain boundaries. However, shown here that presence unreacted PbI 2 results an intrinsic instability film under illumination, leading degradation inert atmosphere and faster upon exposure illumination humidity. The films without have improved stability, but lower due inferior morphology (smaller size, pinholes)....
High-quality pinhole-free perovskite film with optimal crystalline morphology is critical for achieving high-efficiency and high-stability solar cells (PSCs). In this study, a p-type π-conjugated polymer poly[(2,6-(4,8-bis(5-(2-ethylhexyl) thiophen-2-yl)-benzo[1,2-b:4,5-b'] dithiophene))-alt-(5,5-(1',3'-di-2-thienyl-5',7'-bis(2-ethylhexyl) benzo[1',2'-c:4',5'-c'] dithiophene-4,8-dione))] (PBDB-T) introduced into chlorobenzene to form facile effective template-agent during the anti-solvent...
Photovoltachromic cells (PVCCs) are of great interest for the self-powered smart windows architectures and vehicles, which require widely tunable transmittance automatic color change under photostimuli. Organolead halide perovskite possesses high light absorption coefficient enables thin semitransparent photovoltaic device. In this work, we demonstrate co-anode co-cathode photovoltachromic supercapacitors (PVCSs) by vertically integrating a solar cell (PSC) with MoO3/Au/MoO3 transparent...
Abstract α‐Formamidinium lead triiodide (α‐FAPbI 3 ) represents the state‐of‐the‐art for perovskite solar cells (PSCs) but experiences intrinsic thermally induced tensile strain due to a higher phase‐converting temperature, which is critical instability factor. An in situ crosslinking‐enabled strain‐regulating crystallization (CSRC) method with trimethylolpropane triacrylate (TMTA) introduced precisely regulate top section of film where largest lattice distortion occurs. In CSRC,...
Manipulating the perovskite solidification process, including nucleation and crystal growth, plays a critical role in controlling film morphology thus affects resultant device performance. In this work, facile effective ethyl alcohol (EtOH) cosolvent strategy is demonstrated with incorporation of EtOH into ink for high-performance room-temperature blade-coated solar cells (PSCs) modules. Systematic real-time crystallization studies uncover delicate structural evolutions phase-transition...
The addition of small seeding particles into a supersaturated solution is one among the most effective approaches to obtain high-quality semiconductor materials via increased crystallization rates. However, limited study conducted on this approach for fabrication perovskite solar cells. Here, new strategy-"heterogenous seeding-induced (hetero-SiC)" assist growth FAPbI3 -based proposed. In work, di-tert-butyl(methyl)phosphonium tetrafluoroborate directly introduced precursor, which forms...
AZO@Ag nanowire@AZO (AAA) composite stretchable transparent electrode enables full-solution-processed semi-transparent intrinsically OPV achieving record 10.90% PCE, with excellent mechanical robustness against stretch-release cycles.
Abstract Optimizing the interface between perovskite and transport layers is an efficient approach to promote photovoltaic performance of inverted solar cells (IPSCs). Given decades advances in bulk materials optimization, IPSCs has been pushed its limits by engineering with a power conversion efficiency (PCE) over 25% excellent stability. Herein, n‐type polymeric semiconducting material, PY‐IT, that shown remarkable organic photovoltaics, introduced as regulator ETL. Encouragingly, this...
Self-assembled monolayers (SAMs) have become pivotal in achieving high-performance perovskite solar cells (PSCs) and organic (OSCs) by significantly minimizing interfacial energy losses. In this study, we propose a co-adsorb (CA) strategy employing novel small molecule, 2-chloro-5-(trifluoromethyl)isonicotinic acid (PyCA-3F), introducing at the buried interface between 2PACz perovskite/organic layers. This approach effectively diminishes 2PACz's aggregation, enhancing surface smoothness...
The primary challenge in commercializing perovskite solar cells (PSCs) mainly stems from fragile and moisture-sensitive nature of halide materials. In this study, we propose an asynchronous cross-linking strategy. A multifunctional initiator, divinyl sulfone (DVS), is firstly pre-embedded into precursor solutions. DVS, also as a special co-solvent, facilitates intermediate-dominated crystallization manipulation, favouring formamidine-DVS based solvate transition. Subsequently, DVS-embedded...
We demonstrate here that large area periodic arrays of well-aligned carbon nanotubes can be fabricated inexpensively on Ni dots made by the process self-assembly nanosphere lithography. These appear colorful due to their efficient reflection and diffraction visible light. In addition, honeycomb lattice structure, these act as photonic band gap crystals in frequency range. this report, we present initial exploration optical properties such arrays. Here show potential 2D crystal might find...
We report investigations on the influences of post-deposition treatments performance solution-processed methylammonium lead triiodide (CH₃NH₃PbI₃)-based planar solar cells. The prepared films were stored in pure N₂ at room temperature or annealed O₂ temperature, 45°C, 65°C and 85°C for 12 hours prior to deposition metal electrodes. It is found that annealing leads substantial increase power conversion efficiencies (PCEs) devices. Furthermore, strong dependence PCEs devices suggests a...
Abstract Perovskite solar cells (PSCs) are ideally fabricated entirely via a scalable solution process at low temperatures to realize the promise of simple manufacturing, low‐cost processing, compatibility with flexible substrates, and perovskite‐based tandem cells. However, high‐quality photoactive perovskite thin films under those processing conditions is challenge. Here, laminar air‐knife‐assisted room‐temperature meniscus coating approach that enables one control drying kinetics during...
Abstract Flexible photovoltaic devices are promising candidates for triggering the Internet of Things (IoT). However, power conversion efficiencies (PCEs) flexible organic (OPV) with high conductivity poly(3,4‐ethylene dioxythiophene):polystyrene sulfonate (PEDOT:PSS) electrodes on plastic lagging behind rigid due to low transmittance polyethylene terephthalate (PET)/PEDOT:PSS. Moreover, poor stretchability commonly used substrates largely hinders practical application wearable devices....
Epitaxial growth gives the highest-quality crystalline semiconductor thin films for optoelectronic devices. Here, a universal solution-processed bottom-up quasi-epitaxial of highly oriented α-formamidinium lead triiodide (α-FAPbI3) perovskite film via two-step method is reported, in which crystal orientation α-FAPbI3 precisely controlled through synergetic effect methylammonium chloride and large-organic cation butylammonium bromide. In situ GIWAXS visualizes BA-related intermediate phase...
Extensive studies are conducted on perovskite solar cells (PSCs) with significant performance advances (mainly spin coating techniques), which have encouraged recent efforts scalable techniques for the manufacture of PSCs. However, devices fabricated by blade inferior to state-of-the-art spin-coated because power conversion efficiency (PCE) is highly dependent morphology and crystallization kinetics in controlled environment delicate solvent system engineering. In this study, based widely...
Abstract Excess PbI 2 in perovskite film is an effective strategy for boosting solar cells (PSCs) performance. However, the presence of unreacted a critical source intrinsic instability under illumination, due to photolysis (decomposed into metallic lead and iodine). Herein, this issue solved by applying ionic liquids (ILs) on PSCs where ILs can form types stable supramolecules with residual iodide. The formation process mechanism are elucidated. also revealed cause high level interstitial...
Abstract Excess ammonium halides as composition additives are widely employed in perovskite light‐emitting diodes (PeLEDs), aiming to achieve high performance by controlling crystallinity and passivating defects. However, an in‐depth understanding of whether excess organoammonium components affect the film physical/electrical properties resultant device instability is still lacking. Here, trade‐off between stability high‐efficiency formamidinium lead iodide (FAPbI 3 )‐based PeLEDs with...
We demonstrate unrestricted superlensing in a triangular twodimensional hotonic crystal. investigate simple two-point light sources maged by slab lenses made of this photonic crystal, and show that the efraction follows rules geometric optics with Snell'slaw at each interface, an effective isotropic refractive index n= -1 for propagating inside contrast behavior square two-dimensional crystal first band, where dielectric response is anisotropic. This leads to restricted superlensing, which...
The synthesis of self‐assembled In 2 O 3 nanocrystal chains and networks (see Figure) on SiO ‐covered Si substrates by a thermal evaporation condensation method is reported. Au catalyst required for the growth. can be used fabrication complex nanoelectronic devices toward better understanding nanodevice physics.