A5074095181- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- Advanced Sensor and Energy Harvesting Materials
- Solid-state spectroscopy and crystallography
- 2D Materials and Applications
- solar cell performance optimization
- Software Engineering Research
- Glaucoma and retinal disorders
- Gas Sensing Nanomaterials and Sensors
- Advanced Graph Neural Networks
- Supercapacitor Materials and Fabrication
- Electronic and Structural Properties of Oxides
- Spectroscopy and Chemometric Analyses
- Machine Learning in Materials Science
- Ocular Surface and Contact Lens
- Thermal Radiation and Cooling Technologies
- Corneal surgery and disorders
- Nanowire Synthesis and Applications
- MXene and MAX Phase Materials
- Railway Systems and Energy Efficiency
- Luminescence and Fluorescent Materials
- Elevator Systems and Control
Applied Physical Sciences (United States)
2022-2024
Beihang University
2024
University of North Carolina at Chapel Hill
2022-2024
Delft University of Technology
2024
Harbin Medical University
2023
Second Affiliated Hospital of Harbin Medical University
2023
Hong Kong Polytechnic University
2019-2023
Shenzhen Polytechnic
2019-2022
Henan Polytechnic University
2022
City University of Hong Kong
2016
Abstract Two‐step‐fabricated FAPbI 3 ‐based perovskites have attracted increasing attention because of their excellent film quality and reproducibility. However, the underlying formation mechanism remains mysterious. Here, crystallization kinetics a benchmark perovskite with sequential A‐site doping Cs + GA is revealed by in situ X‐ray scattering first‐principles calculations. Incorporating first step induces an alternative pathway from δ‐CsPbI to α‐phase, which energetically more favorable...
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,...
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...
Abstract Interstitial iodides are the most critical type of defects in perovskite solar cells that limits efficiency and stability. They can be generated during solution, film, device processing, further accelerating degradation. Herein, we find introducing a small amount zinc salt- trifluoromethane sulfonate (Zn(OOSCF 3 ) 2 solution control iodide resultant perovskites ink films. CF SOO ̶ vigorously suppresses molecular iodine formation by reducing it to iodide. At same time, cations...
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...
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 The benchmark tin oxide (SnO 2 ) electron transporting layers (ETLs) have enabled remarkable progress in planar perovskite solar cell (PSCs). However, the energy loss is still a challenge due to lack of “hidden interface” control. We report novel ligand-tailored ultrafine SnO quantum dots (QDs) via facile rapid room temperature synthesis. Importantly, QDs ETL with multi-functional terminal groups situ refines buried interfaces both and transparent electrode enhanced interface...
Abstract Perovskite solar cells (PSCs) with a light‐harvesting three‐dimensional perovskite bulk layer as backbone component have achieved great progress in performance. Nonradiative recombination is one major place to improve efficiency and stability they cause significant energy loss PSCs. Additionally, an imperfection grain boundaries will initiate device degradation. One of the most successful strategies decrease nonradiative PSCs introduction reduced dimensional (e.g., quantum wells),...
Abstract Self‐powered wearable energy suppliers are highly desirable for next‐generation smart electronic microsystems. However, it is still challenging to achieve an all‐day operating self‐powered device via the tandem integration strategy. Herein, a flexible supplier (SPFES) proposed “harvest and store” from sunlight (outdoor), dim‐light (indoor), human body motion. In this novel design, two transparent electrodes shared by three functional components: organic photovoltaic, triboelectric...
Abstract Operation stability remains the key hurdle for best‐performing non‐fullerene small molecule acceptor (SMA)‐based organic photovoltaic (OPV) devices. Among all SMAs, ITIC‐derivative is most promising OPV cell using acceptors with a power conversion efficiency > 15%. However, operation of SMA‐based devices under illumination relatively inferior when compared to bulk‐heterojunction (BHJ) cells that employ polymeric acceptors. Here, polymer N2200 used as ternary component study...
Formamidinium lead iodide (FAPbI3) perovskite is a front-runner material for efficient solar cells (PSCs) due to its high light-absorption coefficient, narrow band gap, and superior photostability thermostability. High-quality FAPbI3 formation typically requires an >160°C annealing process induce phase transition from the photoinactive yellow (δ-FAPbI3) photoactive black (α-FAPbI3). However, this high-temperature can defects in films hinders application flexible cells. Here, we report facile...
Graphene/silicon junction based photodetectors have attracted great interest due to their superior characteristics like large photosensitive area, fast photocarrier collection and low dark current. Currently, the weak optical absorption short lifetime of graphene remain major limitations for detection infrared light with wavelengths above 1.2 μm. Here, we elucidate mechanism transport in graphene/silicon photodetector propose a theoretical model study design effect finger-electrode...
The railway timetable rescheduling problem is regarded as an efficient way to handle disturbances. Typically, it tackled using a mixed integer linear programming (MILP) formulation. In this paper, algorithm that combines both reinforcement learning and optimization proposed solve the problem. Specifically, value-based implemented determine independent variables of MILP Then, values all can be derived from these variables. With solution for variables, transformed into problem, which solved...