A5088118933- Organic Electronics and Photovoltaics
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Topic Modeling
- Conducting polymers and applications
- Luminescence and Fluorescent Materials
- Perovskite Materials and Applications
- Multimodal Machine Learning Applications
- Organic Light-Emitting Diodes Research
- 2D Materials and Applications
- Natural Language Processing Techniques
- Advanced Thermoelectric Materials and Devices
- Advanced Sensor and Energy Harvesting Materials
- Advanced Memory and Neural Computing
- Speech and dialogue systems
- Advanced Photocatalysis Techniques
- Domain Adaptation and Few-Shot Learning
- Machine Learning in Materials Science
- Organic and Molecular Conductors Research
- Thermal properties of materials
- Graphene research and applications
- Advanced biosensing and bioanalysis techniques
- Crystallography and molecular interactions
- Electrocatalysts for Energy Conversion
- Advanced Image and Video Retrieval Techniques
Tianjin University
2019-2025
Vanke (China)
2025
Collaborative Innovation Center of Chemical Science and Engineering Tianjin
2019-2025
Tsinghua University
2016-2025
Nanjing Agricultural University
2025
Unité Matériaux et Transformations
2025
China University of Geosciences
2024
Shandong Normal University
2024
Huawei Technologies (Germany)
2023
University of Chinese Academy of Sciences
2020-2023
Motivated by the chirality research of hybrid halide perovskite, we reported controllable growth single crystals (R)-, (S)-, and (R,S)-C6H5CH(CH3)NH3 (MBA)-based lead (Pb) perovskites. The crystal structures were redetermined further refined to clarify previously ambiguous structure problems. We investigated chiral optical properties these including nonlinear (NLO) photoluminescence (PL) properties. as-fabricated (R)- (S)-MBAPbBr3 not only show notable circular dichroism (CD) signals in...
Layered transition metal dichalcogenides (TMDs) have been found to exhibit the indirect-to-direct band gap when exfoliated from bulk a single monolayer. Through first-principles calculations, we predict that such can happen at bilayer for 2H-WSe2 and tetralayer 2H-WTe2. We find be ascribed competition between spin–orbit coupling interlayer interactions, former leading appreciable splittings K point latter Γ of valence band. It is shown stronger tends favor larger number layers. These results...
Fact-based Visual Question Answering (FVQA) requires external knowledge beyond the visible content to answer questions about an image. This ability is challenging but indispensable achieve general VQA. One limitation of existing FVQA solutions that they jointly embed all kinds information without fine-grained selection, which introduces unexpected noises for reasoning final answer. How capture question-oriented and information-complementary evidence remains a key challenge solve problem. In...
The successful demonstration of SnSe single crystals as promising thermoelectric materials highlights alternative strategies to nanostructuring for achieving high efficiency. It stimulates us screen the periodic table earth-abundant with layered crystal structures and intrinsically low thermal conductivity. GeAs2 is made from group IV V elements within same period selenium, it exhibits anisotropic anharmonic bonding character similar IV–VI compound SnSe. Here we present a theoretical...
Bendable organic single crystals are promising candidates for flexible electronics owing to their superior charge-transport properties. However, large-area high-quality rarely available on the polymer substrates generally used in electronics. Here, a surface-assisted assembly strategy based modification, poly(amic acid) (PAA), is developed grow singe using simple drop-casting method. The unique surface properties of PAA that enable molecular solution superwetting and promote ordered produce...
Abstract The instability of organic field-effect transistors (OFETs) is one key obstacle to practical application and closely related the unstable aggregate state semiconductors (OSCs). However, underlying reason for this remains unclear, no effective solution has been developed. Herein, we find that intrinsic tensile compressive strains exist in OSC films are origins device degradation. We further report a strain balance strategy stabilize by regulating film thickness, which based on unique...
Abstract Organic thermoelectric materials have the potential to be used as power supplies for wearable electronics, implantable medical devices, and sensors in Internet of Things. The past 10 years has witnessed rapid development research on organic materials, different material systems optimizing strategies are developed, ZT values some approached that many inorganic low‐temperature region. Among systems, composite especially multicomponent show very promising properties offer more...
Abstract Large language models (LLMs) have attracted widespread attention recently, however, their application in specialized scientific fields still requires deep adaptation. Here, an artificial intelligence (AI) agent for organic field‐effect transistors (OFETs) is designed by integrating the generative pre‐trained transformer 4 (GPT‐4) model with well‐trained machine learning (ML) algorithms. It can efficiently extract experimental parameters of OFETs from literature and reshape them into...
By density functional theory calculations, we show that the Janus monolayer of WSeTe has faster semiconductor–semimetal phase transition kinetics than MoTe<sub>2</sub>.
Monolayer arsenic is a newly emerging two-dimensional material in the VA group similar to its isologue, phosphorene. On basis of first-principles calculations and Boltzmann transport theory, we investigated electrical, thermal, thermoelectric properties for two forms monolayer arsenic, arsenene, featuring puckered buckled structures, respectively. The kinds arsenene are both indirect band gap semiconductors possessing moderate high charge carrier mobilities falling range 40–800 cm2 V–1 s–1....
Motivated by the superior thermoelectric performance of two-dimensional (2D) materials, in this work, we investigate properties XTe monolayers (X= Ge, Sn, Pb) using first-principles calculation and Boltzmann transport theory.The calculated results show ultra-low lattice thermal conductivities (L) as 1.3, 3.6 4.3 W/mK at 300 K, respectively.Phonon analyses that ultralow L stem from coexistence resonant bonding weak monolayers, well avoided crossing between longitudinal acoustic (LA) phonons...
Abstract Neuromorphic visual systems (NVSs) hold the potential to not only preserve but also enhance human capabilities. One such augmentation lies in harnessing polarization information from light reflected or scattered off surfaces like bees, which can disclose unique characteristics imperceptible eyes. While creating polarization‐sensitive optoelectronic synapses presents an intriguing avenue for equipping NVS with this capability, integrating functions sensitivity, photodetection, and...
Narrowband response of organic semiconductors determines the band selectivity and anti-interference photodetectors, which are pursued for a long time but have not yet been resolved in UV band. Herein, feasible strategy is developed to realize narrowband by tuning absorption state intermolecular potential semiconductors. The as-designed non-Donor-Acceptor molecule, 2,5-diphenylthieno[3,2-b]thiophene (2,5-DPTT), exhibits fully suppressing charge transfer absorption. Simultaneously,...
Abstract Molecule design of organic semiconductors (OSCs) for eliminating photoresponse and maintaining high charge mobility concurrently is beneficial to realize intrinsically photostable high‐performance field‐effect transistors (OFETs), which has never been reported. Here, a novel semiconductor TFP‐TT‐TPA with centrosymmetric structure synthesized. Remarkably, OFETs show negligible under light intensity up 170.4 mW cm −2 (higher than sunlight intensity, about 138 ), ensures that the...
Realizing both high-performance and air-stability is key to advancing singlet-diradical-based semiconductors practical applications realizing their material potential associated with open-shell nature.
Abstract Research on strategies to enable organic long‐persistent luminescence (LPL) emission with circularly polarized (CPL) characteristics is still very rare due the lack of an unambiguous light‐emitting mechanism. Herein, (CPLPL) a pair axial chiral molecules as guest induced under ambient conditions by exploiting long‐lived charge separation host–guest doping system, whose LPL performance can be further promoted introducing rigid polymer network enhance efficiency between host and...
SnSe-based materials possess ultrahigh thermoelectric efficiency and show great potential in next-generation devices. The excellent performance of SnSe has been attributed to its ultralow lattice thermal conductivity. In addition phonon–phonon interactions, grain boundary, defect impurity scatterings, phonon–electron coupling also plays a part the transport doped materials, yet it is often overlooked. this work, we investigated effect on conductivity monolayer. We found that decreased by as...
Few-layered arsenic-phosphorus alloys, AsxP(1-x), with a puckered structure have been recently synthesized and demonstrated fully tunable band gaps optical properties. It is predicted that the carrier mobility of monolayer AsP compounds even higher than black phosphorene (b-P). The anisotropic orthogonal electrical thermal transport properties group VA elements make them intriguing materials for thermoelectric applications. Herein, we investigated based on first-principles molecular dynamics...
Visual dialogue is a challenging task that needs to extract implicit information from both visual (image) and textual (dialogue history) contexts. Classical approaches pay more attention the integration of current question, vision knowledge text knowledge, despising heterogeneous semantic gaps between cross-modal information. In meantime, concatenation operation has become de-facto standard fusion, which limited ability in retrieval. this paper, we propose novel Knowledge-Bridge Graph...
The intermolecular interactions of cocrystals can be controlled via selecting the donors and acceptors, then TPA properties selectively adjusted, promoting development materials prepared cocrystal engineering.