A5101437600- Conducting polymers and applications
- Advancements in Battery Materials
- Organic Electronics and Photovoltaics
- Advanced Battery Materials and Technologies
- Perovskite Materials and Applications
- Supercapacitor Materials and Fabrication
- Sparse and Compressive Sensing Techniques
- Wireless Communication Networks Research
- Advanced Wireless Communication Techniques
- Advanced Optimization Algorithms Research
- Advanced Thermoelectric Materials and Devices
- Advanced machining processes and optimization
- Machine Learning and Algorithms
- Nuclear Materials and Properties
- Nuclear reactor physics and engineering
- Chalcogenide Semiconductor Thin Films
- Non-Invasive Vital Sign Monitoring
- Welding Techniques and Residual Stresses
- Extraction and Separation Processes
- Advanced MIMO Systems Optimization
- Tensor decomposition and applications
- Fusion materials and technologies
- Laser Material Processing Techniques
- Ultra-Wideband Communications Technology
- Advanced Computing and Algorithms
Georgia Institute of Technology
2001-2024
Southern University of Science and Technology
2020-2024
Hubei University of Technology
2022-2024
Sun Yat-sen University Cancer Center
2023-2024
Sun Yat-sen University
2023-2024
University of Tennessee at Knoxville
2024
Humboldt-Universität zu Berlin
2020-2023
Shenzhen University
2020-2022
Chang'an University
2022
Sichuan University
2017-2021
Multiple transmit and receive antennas can be used to form multiple-input multiple-output (MIMO) channels increase the capacity by a factor of minimum number antennas. In this paper, orthogonal frequency division multiplexing (OFDM) for MIMO (MIMO-OFDM) is considered wideband transmission mitigate intersymbol interference enhance system capacity. The MIMO-OFDM uses two independent space-time codes sets At receiver, are decoded using prewhitening, followed minimum-Euclidean-distance decoding...
Narrow-bandgap polymer semiconductors are essential for advancing the development of organic solar cells. Here, a new narrow-bandgap acceptor L14, featuring an acceptor-acceptor (A-A) type backbone, is synthesized by copolymerizing dibrominated fused-ring electron (FREA) with distannylated bithiophene imide. Combining advantages both FREA and A-A polymer, L14 not only shows narrow bandgap high absorption coefficient, but also low-lying frontier molecular orbital (FMO) levels. Such FMO levels...
Abstract Narrow‐bandgap n‐type polymers with high electron mobility are urgently demanded for the development of all‐polymer solar cells (all‐PSCs). Here, two regioregular narrow‐bandgap polymer acceptors, L15 and MBTI, electron‐deficient segments synthesized by copolymerizing dibrominated fused‐ring acceptors (FREA) distannylated aromatic imide, respectively. Taking full advantage FREA both show narrow bandgap mobility. Benefiting from more extended absorption, better backbone ordering,...
Capacity fading induced by unstable surface chemical properties and intrinsic structural degradation is a critical challenge for the commercial utilization of Ni-rich cathodes. Here, highly stabilized cathode with enhanced rate capability cycling life constructed coating molybdenum compound on LiNi0.815Co0.15Al0.035O2 secondary particles. The infused Mo ions in boundaries not only induce Li2MoO4 layer outermost but also form an epitaxially grown outer region NiO-like phase enriched content...
The nonhalogenated solvent <italic>o</italic>-XY-processed-all-PSCs achieved a highly-efficient PCE of 15.6% along with decent processability under ambient conditions.
In the field of all-polymer solar cells (all-PSCs), all efficient polymer acceptors that exhibit efficiencies beyond 8% are based on either imide or dicyanoethylene. To boost development this promising cell type, creating novel electron-deficient units to build high-performance is critical. A unit containing B←N bonds, namely, BNIDT, synthesized. Systematic investigation BNIDT reveals desirable properties including good coplanarity, favorable single-crystal structure, narrowed bandgap and...
Nickel-rich layered oxides are regarded as very promising materials cathodes for lithium-ion batteries because of their environmental benignancy, low cost, and high energy density. However, insufficient cycle performance poor thermotic characteristics induced by structural degradation at potentials elevated temperatures pose challenging hurdles nickel-rich cathodes. Here, a protective pillaring layer, in which partial Ni2+ ions occupy Li slabs gradient Mn4+, is integrated into the primary...
Abstract High‐performance n‐type polymeric mixed ionic‐electronic conductors (PMIECs) are essential for realizing organic electrochemical transistors (OECTs)‐based low‐power complementary circuits and biosensors, but their development still remains a great challenge. Herein, by devising two novel polymers (f‐BTI2g‐SVSCN f‐BSeI2g‐SVSCN) containing varying selenophene contents together with thiophene‐based counterpart as the control, it is demonstrated that gradually increasing loading in...
Doped n-type polymers usually exhibit low electrical conductivities and thermoelectric power factors (PFs), restricting the development of high-performance p-n-junction-based organic thermoelectrics (OTEs). Herein, design synthesis a new cyano-functionalized fused bithiophene imide dimer (f-BTI2), CNI2, is reported, which synergistically combines advantages both cyano functionalities, thus leading to substantially higher electron deficiency than parent f-BTI2. On basis this novel building...
Abstract Designing n ‐type polymers with high electrical conductivity remains a major challenge for organic thermoelectrics (OTEs). Herein, by devising novel selenophene‐based electron‐deficient building block, the pronounced advantages of selenium substitution in simultaneously enabling advanced is demonstrated mobility (≈2 orders magnitude higher versus their sulfur‐based analogues due to both intensified intra‐ and inter‐chain interactions) much improved ‐doping efficiency (enabled...
Injection of phase transition from a layered to rock-salt into the bulk lattice and side reactions on interfacial usually causes structure degradation, quick capacity/voltage decay, even thermal instability. Here, self-formed protective layer coupled with tuning was constructed for Ni-rich cathodes by simultaneous incorporation Zr Al in one-step calcination. The migration energy between surface induces dual modifications lattice, which effectively decrease formation cation mixing, degree...
Abstract Dopant‐free hole‐transporting layers (HTLs) are highly desired for realizing efficient and stable perovskite solar cells (PVSCs), but only very few of them can enable power conversion efficiencies (PCEs) over 20%. Herein, two imide‐functionalized triarylamine‐based donor‐acceptor (D‐A) type copolymers, PBTI‐TPA PTTI‐TPA, developed applied as dopant‐free HTLs in inverted PVSCs. The combination a classic redox‐active triphenylamine donor unit an electron‐withdrawing oligothiophene...
n-Type semiconducting polymers with high thermoelectric performance remain challenging due to the scarcity of molecular design strategy, limiting their applications in organic (OTE) devices. Herein, we provide a new approach enhance OTE n-doped by introducing acceptor-acceptor (A-A) type backbone bearing branched ethylene glycol (EG) side chains. When doped 4-(2,3-dihydro-1,3-dimethyl-1H-benzimidazol-2-yl)-N,N-dimethylbenzenamine (N-DMBI), A-A homopolymer PDTzTI-TEG exhibits n-type...
Cyano functionalization as an effective strategy to construct high-performance n-type semiconductors is widely investigated in organic electronics.
Abstract Developing polymers with high electrical conductivity ( σ ) after n‐doping is a great challenge for the advance of field organic thermoelectrics (OTEs). Herein, we report series thiazole imide‐based n‐type by gradually increasing selenophene content in polymeric backbone. Thanks to strong intramolecular noncovalent N⋅⋅⋅S interaction and enhanced intermolecular Se⋅⋅⋅Se interaction, increase content, show lowered LUMOs, more planar backbone, improved film crystallinity versus...
A current limitation to improving the volumetric energy density of Na-ion batteries is low hard carbon(HC) anode. This problem could be solved by using high-density, high-capacity materials like SnS, which reacts with Na over a combined conversion and alloying reaction that theoretically provide 1022 mAh g–1 5335 cc–1(materials level). Here, composites containing SnS thermally activated graphite(t-G) are prepared ball-milling tested different electrolyte solutions. Adding 5 wt% t-G...