A5100767643- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Physics of Superconductivity and Magnetism
- Superconductivity in MgB2 and Alloys
- Perovskite Materials and Applications
- Iron-based superconductors research
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Molecular Junctions and Nanostructures
- Advanced Photonic Communication Systems
- Ga2O3 and related materials
- ZnO doping and properties
- Organic Light-Emitting Diodes Research
- Optical Network Technologies
- Advanced Fiber Optic Sensors
- Advanced Condensed Matter Physics
- High-pressure geophysics and materials
- Nanowire Synthesis and Applications
- Integrated Energy Systems Optimization
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Silicon Carbide Semiconductor Technologies
- Advanced Power Generation Technologies
- Carbon Dioxide Capture Technologies
- Vacuum and Plasma Arcs
- Electricity Theft Detection Techniques
North China Electric Power University
2015-2024
South China University of Technology
2023-2024
State Key Laboratory of Luminescent Materials and Devices
2024
Northwestern Polytechnical University
2018-2024
Chongqing University
2022
China Aerospace Science and Technology Corporation
2022
Central South University
2019-2021
Changsha University
2020-2021
Beijing National Laboratory for Molecular Sciences
2021
Chinese Academy of Sciences
2021
A new small molecule acceptor, Y18, was designed and synthesized. Over 17% efficiency obtained with single junction solar cells based on Y18.
Narrow bandgap n-type organic semiconductors (n-OS) have attracted great attention in recent years as acceptors solar cells (OSCs), due to their easily tuned absorption and electronic energy levels comparison with fullerene acceptors. Herein, a new n-OS acceptor, Y5, an electron-deficient-core-based fused structure is designed synthesized, which exhibits strong the 600-900 nm region extinction coefficient of 1.24 × 105 cm-1 , electron mobility 2.11 10-4 cm2 V-1 s-1 . By blending Y5 three...
Abstract The realization of high‐efficiency organic solar cells (OSCs) from renewable sources will bring a real green energy technology. Benzo[1,2‐b:4,5‐b′]difuran (BDF) is such building block for photovoltaic polymers as it can be built furfural, which available trees and vegetables. However, the device performance BDF‐based limited by aggregation properties unfavorable active layer morphology. Herein, two new wide bandgap‐conjugated polymers, PFCT‐2F PFCT‐2Cl, are developed copolymerizing...
Abstract All‐inorganic n‐i‐p perovskite solar cells (PSCs) using doped Spiro‐OMeTAD as hole transport material (HTM) suffer from photothermal stability due to ionic diffusion and radical‐induced degradation by the dopants. In this article, dopant‐free starlike molecule (N2, N2‐bis(4‐(bis(4‐methoxyphenyl)amino)phenyl)‐N5,N5‐bis(4‐methoxyphenyl)pyridine‐2,5‐diamine (BD)) is synthesized engineer stacking properties delivered higher mobility than (3.2 × 10 −4 versus 1.76 cm 2 V −1 s ) HTM....
Silicon carbide (SiC) metal–oxide–semiconductor field-effect transistors (MOSFETs) are regarded as the key device for next generation of power electronics. However, wide applications hindered by threshold voltage instability. How drifts under both static and dynamic gate stress has been reported. But underpinning mechanism remains to be revealed, which is basis exploration application solutions. This letter investigate why drifts. It found that local electric field plays role behind...
By increasing the fluorination sites of polymer donors, <italic>J</italic><sub>SC</sub>, <italic>V</italic><sub>OC</sub> and FF are enhanced for solar cells, because fine-tuned energy levels, reduced trap-assisted or bimolecular recombination, improved charge carrier mobility.
Optimizing the molecular structures of organic solar cell (OSC) materials and boosting power conversion efficiencies are eternal theme in energy region. A series fused benzotriazole (BTA)-based A–DA′D–A nonfullerene acceptors (such as Y18) were developed for application efficient OSCs, which high quantum low voltage losses could be achieved because optimized electron-deficient core specific geometry. Here, based on BTA core, bulky alkyl chain unit was further tailored to minimize lateral...
Thin-film lithium niobate on insulator (LNOI) has recently emerged as a promising platform for high-speed optical communication devices.For practical applications, an efficient, polarization-insensitive, misalignment-tolerant and broadband fiber-to-chip coupler is necessary.In this paper, we present edge based trident spot-size convertor (SSC).Experiment shows 1.18/1.10dB per facet low loss at 1550 nm TE/TM polarization respectively.A relatively large alignment tolerance (AT) also been...
Novel polyimide hybrid films in which nanoscale polyoxometalates (POM) clusters are covalently linked with the polymer chains exhibit not only drastically reduced dielectric constants relative to neat film, as low 1.22, but also improved thermal stability, and mechanical properties without sacrificing transparency of films.
PM6 is a donor–acceptor copolymer widely used in high-efficiency organic solar cells (OSC). Here, we report the observation of exciton–exciton annihilation (EEA) both solution and film. We find that EEA mechanisms are distinct these two systems. In solution, occurs via long-range dipole–dipole interaction between intrachain excitons, while film it takes place interchain polaron pairs (spatially indirect excitons) short-range Coulomb interaction. The quantum yield free formation also...
Recent studies have almost focused on finding active layer materials with extended π‐conjugation structures for high‐performance organic solar cells (OSCs). However, the extension of conjugate length, synthesis difficulty and cost will increase. Achieving high efficiency while reducing material costs is a prerequisite commercialization OSCs. Herein, two low‐cost A‐DA′D‐A‐type (where A D represent an electron‐withdrawing unit electron‐donating unit, respectively) nonfullerene acceptors...
Non-fullerene acceptors have been utilized to construct efficient organic solar cells (OSCs).
We report a series of NFAs (namely BTP-1V, BTP-2V, BTP-3V, and BTP-4V) by inserting vinylene π-bridges between the Y-series central fused core non-halogenated end group IC.
Recently, rapid progress in the power conversion efficiency for organic solar cells (OSCs) is achieved due to phenomenal development of nonfullerene electron acceptors. In addition pairing donors, conjugated donor–acceptor copolymers are another key player high-efficiency OSCs. Here, temporal evolution excited states a typical copolymer, PM6, was traced by transient absorption spectroscopy. The spectroscopic result implies formation two kinetically correlated intrachain species, polaron...