A5100606466- Perovskite Materials and Applications
- Conducting polymers and applications
- Solar-Powered Water Purification Methods
- Advanced Sensor and Energy Harvesting Materials
- Silicon and Solar Cell Technologies
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- Remote Sensing and LiDAR Applications
- Semiconductor materials and interfaces
- 2D Materials and Applications
- Silicon Nanostructures and Photoluminescence
- Robotics and Sensor-Based Localization
- 3D Surveying and Cultural Heritage
- Nanowire Synthesis and Applications
- Nanopore and Nanochannel Transport Studies
- Graphene research and applications
- Thermal Radiation and Cooling Technologies
- Thin-Film Transistor Technologies
- ZnO doping and properties
- Gold and Silver Nanoparticles Synthesis and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Molecular Junctions and Nanostructures
- Topological Materials and Phenomena
- Infrastructure Maintenance and Monitoring
- Solid-state spectroscopy and crystallography
Macau University of Science and Technology
2022-2025
Soochow University
2016-2025
Hefei University of Technology
2023-2025
Dalian University of Technology
2020-2025
China Tobacco
2024
Nanjing Forestry University
2023-2024
Beijing Institute of Nanoenergy and Nanosystems
2024
Chinese Academy of Sciences
2024
University of Chinese Academy of Sciences
2024
Second Affiliated Hospital of Xi'an Jiaotong University
2023
Hybrid organic-inorganic perovskite materials have received substantial research attention due to their impressively high performance in photovoltaic devices. As one of the oldest functional materials, it is intriguing explore optoelectronic properties after reducing into a few atomic layers which two-dimensional (2D) confinement may get involved. In this work, we report combined solution process and vapor-phase conversion method synthesize 2D hybrid (i.e., CH3NH3PbI3) nanocrystals as thin...
Recently, research on graphene based photodetectors has drawn substantial attention due to ultrafast and broadband photoresponse of graphene. However, they usually have low responsivity photoconductive gain induced by the gapless nature graphene, which greatly limit their applications. The synergetic integration with other two-dimensional (2D) materials form van der Waals heterostructure is a very promising approach overcome these shortcomings. Here we report growth graphene-Bi2Te3 where...
Apart from conventional materials, the study of two-dimensional (2D) materials has emerged as a significant field for variety applications. Graphene-like 2D are important elements potential optoelectronics applications due to their exceptional electronic and optical properties. The processing these towards realization devices been one main motivations recent development photonics optoelectronics. progress in photonic based on graphene-like especially topological insulators (TIs) transition...
Graphene is an attractive optoelectronic material for light detection because of its broadband absorption and fast response time. However, the relatively low cross‐section, recombination rate, absence gain mechanism have limited responsivity pure graphene‐based phototransistor to ≈10 −2 A W −1 . In this work, a photoconductive 9 electrons per photon ≈6.0 × 10 5 are demonstrated in hybrid photodetector that consists monolayer graphene covered with thin layer dispersive organolead halide...
Rapid progresses have been achieved in the photonic applications of two-dimensional materials such as graphene, transition metal dichalcogenides, and topological insulators. The strong light–matter interactions large optical nonlinearities these atomically thin layered make them promising saturable absorbers for pulsed laser applications. Either Q-switching or mode-locking pulses with particular output characteristics can be by using different absorbers. However, it remains still very...
The presence of a direct band gap and high carrier mobility in few-layer black phosphorus (BP) offers opportunities for using this material infrared (IR) light detection. However, the poor air stability BP its large contact resistance with metals pose significant challenges to fabrication highly efficient IR photodetectors long lifetimes. In work, we demonstrate graphene-BP heterostructure photodetector ultrahigh responsivity long-term at wavelengths. our device architecture, top layer...
Abstract The ubiquitous and spontaneous phase transitions between liquid gaseous water contain substantial energy that can be harvested by emerging hydrovoltaic technologies, including evaporation‐induced generators (EIGs) moisture‐induced (MIGs). Featuring the virtues of ubiquity, spontaneity, direct current output, this technology broadens technical feasibility harvesting from natural cycle, enabling self‐powered sustainable electronics. Elaborated materials synthesis innovative device...
Knowledge of localized strain at the micrometer scale is essential for tailoring electrical and mechanical properties ongoing thinning crystal silicon (c-Si) solar cells. Thinning c-Si wafers below 110 μm are susceptible to cracking in manufacturing due nonuniform stress distribution a region, necessitating rigorous technique reveal correlating with its device output. In this context, Raman microscopy integrated photovoltage mapping setup high resolution submicrometer developed acquire...
All-polymer organic solar cells offer exceptional stability. Unfortunately, the use of bulk heterojunction (BHJ) structure has intrinsic challenge to control side-chain entanglement and backbone orientation achieve sophisticated phase separation in all-polymer blends. Here, we revealed that P–i–N can outperform BHJ ones with a nearly 50% efficiency improvement, reaching power conversion approaching 10%. This also provide an enhanced internal electric field remarkably stable morphology under...
A specially designed n‐type semiconductor consisting of Ca‐doped ZnO (CZO) nanoparticles is used as the electron transport layer (ETL) in high‐performance multicolor perovskite light‐emitting diodes (PeLEDs) fabricated using an all‐solution process. The band structure tailored via Ca doping to create a cascade conduction energy levels from cathode perovskite. This alignment significantly enhances conductivity and carrier mobility CZO ETL enables controlled injection, giving rise sub‐bandgap...
Direct electricity generation from water flow/evaporation, coined hydrovoltaic effect, has recently attracted intense interest as a facile approach to harvest green energy ubiquitous capillary flow or evaporation. However, the current device is inferior in output power efficiency compared other renewable devices. Slow evaporation rate and inefficient charge collection at electrodes are two fundamental drawbacks limiting efficiency. Here, we report bioinspired hierarchical porous fabric...
Quasi-two-dimensional (2D) perovskites promise intrinsically stable solar cell performance. However, the crystal orientation and phase distribution in 2D solution-processed are difficult to manipulate, which restricts device efficiency as well its reproducibility. Here, we simply incorporate potassium ion (K+) into a quasi-2D precursor solution, can dramatically change nucleation steps during perovskite films spin-coating process probed by situ synchrotron-based grazing incident X-ray...
Recently, considerable researches have reported that the incorporation of potassium cation (K + ) in lead halide perovskites obviously improves performance perovskite solar cells. The recent finding indicates interstitial occupancy position K lattice can increase ion‐migration barrier, which dramatically suppresses hysteresis device. However, enhancement photoluminescence (PL) as well bandgap variation cannot be interpreted by state perovskite. Considering this discrepancy, it has been found...
An organic–inorganic hybrid moist-electric generator outputs a voltage of 1.28 V and retains 60% the peak performance after 800 hours’ operation.
Polycrystalline hybrid organic–inorganic perovskite microwires have been demonstrated as optical waveguides with small loss and broad wavelength tunability.
Ion migration in hybrid organic–inorganic perovskites has been suggested to be an important factor for many unusual behaviors perovskite-based optoelectronics, such as current–voltage hysteresis, low-frequency giant dielectric response, and the switchable photovoltaic effect. However, role played by ion photoelectric conversion process of is still unclear. In this work, we provide microscale insights into influence on microstructure, stability, light–matter interaction perovskite...
Abstract Recently, hydrovoltaic technology emerged as a novel renewable energy harvesting method, which dramatically extends the capability to harvest water energy. However, urgent issue restricting its device performance is poor carrier transport properties of solid surface if large charged interface considered simultaneously. Herein, based on silicon nanowire arrays (SiNWs), provide surface/volume ratio and excellent properties, yields sustained electricity by concentration gradient...
Abstract The integration of graphene with colloidal quantum dots (QDs) that have tunable light absorption affords new opportunities for optoelectronic applications as such a hybrid system solves the problem both quantity and mobility photocarriers. In this work, comprising monolayer self‐doped copper phosphide (Cu 3− x P) QDs is developed efficient broadband photodetection. Unlike conventional PbS are toxic, Cu P environmental friendly plasmonic resonant in near‐infrared (NIR) wavelength....
Transition metal oxides (TMOs)/silicon (Si) heterocontact solar cells are currently under intensive investigation due to their simple fabrication process and less parasitic light absorption compared traditional counterparts. Effective segregation of carriers which is related carrier‐selective crucial for the performance photovoltaic devices. Molybdenum oxide (MoO x , ≤ 3), with a wide bandgap ∼3.24 eV as well defect bands derived from oxygen vacancies located inside band gap, has been...
Two-dimensional (2D) lead halide perovskites with long-chain ammonium halides display high photoluminescence quantum yields (PLQYs), because of their size and dielectric confinement, which hold promise for a high-efficiency low-cost light-emitting diode (LED). However, the presence an insulating organic spacer cation (L) dramatically deteriorates charge transport properties along out-of-plane nanoplatelet direction or adjacent nanocrystals, would limit device performance LED. To overcome...
Abstract Inkjet printing is a powerful technology for realizing high‐density pixelated perovskite light‐emitting diodes (PeLEDs). However, the coffee‐stain effect in inkjet process often leads to uneven thickness and poor crystallization of printed features, which deteriorates performance PeLEDs. Here, strategy developed suppress via enhancing Marangoni flow strength. An interfacial poly(vinylpyrrolidone) (PVP) layer incorporated tune surface tension underlying hole transport (HTL) enhance...
Hydrovoltaic devices are proposed as an alternative way to directly generate electricity due the ubiquity of water and its interaction with specific porous structures. At present, output power density reported device is limited by low current arising from surface charge inferior transport capability active materials. In this work, asymmetric structure consisting positively charged conductive polyaniline (PANI) negatively Ti3C2TX MXene build a hydrovoltaic achieve high conductivity...