A5100338504- Perovskite Materials and Applications
- Advancements in Battery Materials
- Conducting polymers and applications
- Semiconductor materials and devices
- Advanced Battery Materials and Technologies
- Molecular Junctions and Nanostructures
- Organic Electronics and Photovoltaics
- Advanced Memory and Neural Computing
- Supercapacitor Materials and Fabrication
- Electronic and Structural Properties of Oxides
- Quantum and electron transport phenomena
- Semiconductor materials and interfaces
- Graphene research and applications
- Ferroelectric and Negative Capacitance Devices
- Organic Light-Emitting Diodes Research
- Advanced Battery Technologies Research
- Electrocatalysts for Energy Conversion
- Gas Sensing Nanomaterials and Sensors
- Advanced battery technologies research
- Power Systems and Technologies
- Air Quality and Health Impacts
- Carbon Nanotubes in Composites
- Advancements in Semiconductor Devices and Circuit Design
- Magnetic Properties and Synthesis of Ferrites
- Urban Transport and Accessibility
Harbin Normal University
2017-2024
Northwest University
2015-2024
Ocean University of China
2020-2024
Northwest University
2024
Ministry of Education of the People's Republic of China
2017-2024
PowerChina (China)
2023-2024
Xiamen University
2023
Liaocheng University
2023
Beijing Solar Energy Research Institute
2023
Qufu Normal University
2023
Recently the hybrid organic-inorganic trihalide perovskites have shown remarkable performance as active layers in photovoltaic and other optoelectronic devices. However, their spin characteristic properties not been fully studied, although due to relatively large spin-orbit coupling these materials may show great promise for spintronic applications. Here we demonstrate spin-polarized carrier injection into methylammonium lead bromide films from metallic ferromagnetic electrodes two...
The defect passivation of perovskite films is an efficacious way to further boost the power conversion efficiency (PCE) and long-term stability solar cells (PSCs). In this work, ionic liquids (ILs) 1-butyl-2,3-dimethylimidazolium chloride ([BMMIm]Cl) are used as a modification layer in carbon-based CsPbBr3 PSCs without hole-transporting material (HTM) for passivating surface defects. preliminary results demonstrate that [BMMIm]Cl modifier passivates defects film reduces valence band close...
Two-dimensional hybrid organic–inorganic perovskites (2D-HOIPs) that form natural multiple quantum wells have attracted increased research interest due to their interesting physics and potential applications in optoelectronic devices. Recent studies shown spintronics can also be introduced 2D-HOIPs upon integrating chiral organic ligands into the layers. Here we report spin-dependent photovoltaic photogalvanic responses of devices based on 2D-HOIPs, namely, (R-MBA)2PbI4 (S-MBA)2PbI4. The...
Abstract The two-dimensional (2D) Ruddlesden−Popper organic-inorganic halide perovskites such as (2D)-phenethylammonium lead iodide (2D-PEPI) have layered structure that resembles multiple quantum wells (MQW). heavy atoms in 2D-PEPI contribute a large spin-orbit coupling influences the electronic band structure. Upon breaking inversion symmetry, spin splitting (‘Rashba splitting’) occurs bands. We studied single crystals using circular photogalvanic effect (CPGE). confirm existence of Rashba...
The perovskite solar cells (PSCs) based on cesium lead bromide (CsPbBr3) with outstanding environmental stability and low preparation cost are regarded as one of the most promising photovoltaic devices for commercial applications. However, performance CsPbBr3 PSCs can be badly deteriorated by intense charge recombination arising from ionic defects at grain boundaries film. To cope this issue, we adopt an amino acid l-lysine two carboxyl groups a chemical additive to incorporate into film...
The ability to control the response of metamaterial structures can facilitate development new terahertz devices, with applications in spectroscopy and communications. We demonstrate ultrafast frequency-agile devices that enable such a capability, which multiple perovskites be patterned each unit cell micrometer-scale precision. To accomplish this, we developed fabrication technique shields already deposited from organic solvents, allowing for close proximity. By doing so, tuning resonant is...
The passenger car sector accounts for nearly half of all transport-related emissions. Rapid decarbonization is therefore important but challenging, particularly in China, where, despite recent emission peak (by 2030) and carbon-neutrality 2060) pledges, ownership associated emissions are increasing. Successful reduction will require a rapid transition both technology (e.g., toward electrification) demand driving less). However, how to successfully deploy these twin strategies optimal...
Abstract The hybrid organic–inorganic perovskites (HOIPs) form a new class of semiconductors which show promising optoelectronic device applications. Remarkably, the properties HOIP are tunable by changing chemical components their building blocks. Recently, spintronic and applications in devices have attracted substantial interest. Here impact component diversity HOIPs on is studied. Spin valve based with different organic cations halogen atoms fabricated. spin diffusion length obtained...
Abstract Chiral hybrid Mn (II)‐based halides have attracted great interest in the optoelectronic field due to their low cost, non‐toxicity, abundant structural diversity, and excellent photoluminescence, chiroptical, nonlinear optical characteristics. Here, chiral hybrids (R/S‐MBA)MnCl 3 ·CH OH (MBA = C 6 H 5 CH(CH )NH + ) (R/S‐NPA)Cl·H 2 O (R, S‐NPA)Cl (NPA 10 7 single crystals are successfully obtained using methanol (CH OH) as an induced‐crystallization reagent by slow evaporation method....
The catastrophic dendrite hyperplasia and parasitic reactions severely impede the future deployment of aqueous Zn‐ion batteries. Controlling zinc orientation growth is considered to be an effective method overcome aforementioned concerns, especially for regulating (002) plane deposited Zn. Unfortunately, Zn texture difficult obtain stable cycling under high deposition capacity resulting from its large lattice distortion nonuniform distribution in electric field. Herein, different traditional...
Abstract Ni–Fe bimetallic oxide nanotubes with a hollow and porous structure were synthesized by using metal‐organic framework (MOF) annealing processes. The Ni/Fe molar ratios in the binary metal rationally designed. Typically, Ni 0.62 Fe 2.38 O 4 (called NFO‐0.25) tube shell of around 10 nm possess specific surface area 134.3 m 2 g −1 are composed nanosized primary particles. lithium‐ion battery performance nanotube anode was evaluated galvanostatic rate cycling. In half‐cell, high...
Abstract The isotope effect is studied in the magneto‐electroluminescence (MEL) and pulsed electrically detected magnetic resonance of organic light‐emitting diodes based on thermally activated delayed fluorescence (TADF) from donor–acceptor exciplexes that are either protonated (H) or deuterated (D). It found at ambient temperature, exchange H to D has no spin‐dependent current MEL responses devices. However, cryogenic temperatures, where reverse intersystem crossing (RISC) triplet singlet...
Magnetic iron oxide (Fe3−xO4) nanoparticles (NPs) with high density and narrow size distribution were selectively cast inside or at the outer surface of channels carbon nanotubes (CNTs) by performing thermal decomposition an organic precursor in liquid-phase medium presence adequately pre-treated CNTs. The Fe3−xO4 NPs generated synthesis is around 13 ± 3 nm no agglomeration was observed thanks to oleic acid playing role surfactant medium. selective filling CNT channel confirmed X-ray...
Hybrid organic–inorganic metal-halide perovskites have emerged as versatile materials for enabling low-cost, mechanically flexible optoelectronic applications. The progress has been commendable; however, technological breakthroughs outgrown the basic understanding of processes occurring in bulk and at device interfaces. Here, we investigated photocurrent perovskite/organic semiconductor interfaces relation to microstructure electronically active layers. We found that response is...
Abstract Photovoltaic perovskites, most notably methylammonium lead triiodide, (NH 3 Me)PbI , have recently attracted considerable attention, and based upon the modified “Goldschmidt” as well a “revised” tolerance factors, hydrazinium should be able to occupy same cation site methylammonium, form cubic unit cell. The reaction of N 2 H 5 + I − with PbI in dimethylformamide results three types yellow crystals; hexagonal, needle‐like, rod‐like, structures which were determined at 100 K....