A5037692751- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Organic Light-Emitting Diodes Research
- Luminescence and Fluorescent Materials
- Nanoplatforms for cancer theranostics
- Thin-Film Transistor Technologies
- Advanced Polymer Synthesis and Characterization
- Covalent Organic Framework Applications
- Organic and Molecular Conductors Research
- Fullerene Chemistry and Applications
- Supramolecular Self-Assembly in Materials
- Advanced Photocatalysis Techniques
- Molecular Junctions and Nanostructures
- Block Copolymer Self-Assembly
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Silicon Carbide Semiconductor Technologies
- Synthesis and Properties of Aromatic Compounds
- Porphyrin and Phthalocyanine Chemistry
- Catalytic C–H Functionalization Methods
- Metal-Organic Frameworks: Synthesis and Applications
- Organic Chemistry Cycloaddition Reactions
- Semiconductor materials and interfaces
- High-Voltage Power Transmission Systems
Southern University of Science and Technology
2016-2025
Key Laboratory of Guangdong Province
2020-2025
Beijing Solar Energy Research Institute
2023-2024
East China University of Science and Technology
2020-2023
Anhui Institute of Optics and Fine Mechanics
2022-2023
Institute of Hydrobiology
2023
Chinese Academy of Sciences
2023
Hefei Institutes of Physical Science
2023
Dalian Neusoft University of Information
2023
Laser Research Institute
2022
A new low band gap copolymer PBB3 containing [6,6']bi[thieno[3,4-b]thiophenyl]-2,2'-dicarboxylic acid bis-(2-butyloctyl) ester (BTT) and 4,8-bis(2-butyloctyl)benzo[1,2-b:4,5-b']dithiophene (BDT) units was synthesized tested for solar cell efficiency. showed a broad absorbance in the near-IR region with substantially red-shifted (by more than 100 nm) λ(max) at 790 nm as compared to PTB series of polymers, which have been previously reported. The polymer also both favorable energy level match...
PTB7 semiconducting copolymer comprising thieno[3,4-b]thiophene and benzodithiophene alternating repeat units set a historic record of solar energy conversion efficiency (7.4%) in polymer/fullerene bulk heterojunction cells. To further improve cell performance, thorough understanding structure-property relationships associated with PTB7/fullerene related organic photovoltaic (OPV) devices is crucial. Traditionally, OPV active layers are viewed as an interpenetrating network pure polymers...
Two-dimensional covalent organic frameworks (2D COFs), an emerging class of crystalline porous polymers, have been recognized as a new platform for efficient solar-to-hydrogen energy conversion owing to their pre-designable structures and tailor-made functions. Herein, we demonstrate that slight modulation the chemical structure typical photoactive 2D COF (Py-HTP-BT-COF) via chlorination (Py-ClTP-BT-COF) fluorination (Py-FTP-BT-COF) can lead dramatically enhanced photocatalytic H2 evolution...
Owing to their insufficient light absorption and charge transport, 2D Ruddlesden-Popper (RP) perovskites show relatively low efficiency. In this work, methylammonium (MA), formamidinum (FA), FA/MA mixed perovskite solar cells (PSCs) are fabricated. Incorporating FA cations extends the range enhances absorption. Optical spectroscopy shows that substantially increase portion of 3D-like phase phases, X-ray diffraction (XRD) studies reveal FA-based possesses an oblique crystal orientation....
Abstract As a common feature in majority of malignant tumors, hypoxia has become the Achilles’ heel photodynamic therapy (PDT). The development type‐I photosensitizers that show hypoxia‐tolerant PDT efficiency provides straightforward way to address this issue. However, materials have rarely been discovered. Herein, π‐conjugated molecule with A–D–A configuration, COi6‐4Cl, is reported. H 2 O‐dispersible nanoparticle COi6‐4Cl can be activated by an 880 nm laser, and displays type I/II...
As the power conversion efficiency (PCE) of organic solar cells (OSCs) has surpassed 17% baseline, long-term stability highly efficient OSCs is essential for practical application this photovoltaic technology. Here, photostability and possible degradation mechanisms three state-of-the-art polymer donors with a commonly used nonfullerene acceptor (NFA), IT-4F, are investigated. The active-layer materials show excellent intrinsic photostability. initial morphology, in particular mixed region,...
Abstract To elevate the performance of polymer solar cells (PSC) processed by non‐halogenated solvents, a dissymmetric fused‐ring acceptor BTIC‐2Cl‐γCF 3 with chlorine and trifluoromethyl end groups has been designed synthesized. X‐ray crystallographic data suggests that 3D network packing structure as result H‐ J‐aggregations between adjacent molecules, which will strengthen its charge transport an material. When PBDB‐TF was used donor, toluene‐processed binary device realized high power...
Abstract For organic solar cells to be competitive, the light-absorbing molecules should simultaneously satisfy multiple key requirements, including weak-absorption charge transfer state, high dielectric constant, suitable surface energy, proper crystallinity, etc. However, systematic design rule in achieve abovementioned goals is rarely studied. In this work, guided by theoretical calculation, we present a rational of non-fullerene acceptor o-BTP-eC9, with distinct photoelectric properties...
Abstract Interface engineering is a critical method by which to efficiently enhance the photovoltaic performance of nonfullerene solar cells (NFSC). Herein, series metal–nanographene‐containing large transition metal involving d π – p conjugated systems way addition reactions osmapentalynes and ‐diethynyl‐hexabenzocoronenes reported. Conjugated extensions are engineered optimize π‐conjugation these metal–nanographene molecules, serve as alcohol‐soluble cathode interlayer (CIL) materials....
Oligomeric acceptors are expected to combine the advantages of both highly developed small molecular and polymeric acceptors. However, organic solar cells (OSCs) based on oligomers lag far behind due their slow development low diversity. Here, three oligomeric were produced through oligomerization molecules. The dimer dBTICγ-EH achieved best power conversion efficiencies (PCEs) 14.48 % in bulk heterojunction devices possessed a T80 (80 initial PCE) lifetime 1020 h under illumination, which...
Abstract Bulk heterojunction (BHJ) organic solar cells (OSCs) have achieved great success because they overcome the shortcomings of short exciton diffusion distances. With progress in material innovation and device technology, efficiency BHJ devices is continually being improved. For some special photovoltaic systems, it difficult to manipulate miscibility morphology blend films, this results moderate, even poor performance. Quasiplanar (Q‐PHJ) OSCs been proposed exploit excellent properties...
An asymmetric acceptor BTP-PhC6-C11 shows hydrogen bond assisted and tighter crystal packing enhanced electronic coupling as compared with symmetric Y6 BTP-PhC6, organic solar cells based on PM1:BTP-PhC6-C11 realized a highest PCE of 18.33%.
NIR-II-emitting photosensitizers (PSs) have attracted great research interest due to their promising clinical applications in imaging-guided photodynamic therapy (PDT). However, it is still challenging realize highly efficient PDT on NIR-II PSs. In this work, we develop a chlorination-mediated π-π organizing strategy improve the of PS with conjugation-extended A-D-A architecture. The significant dipole moment carbon-chlorine bond and strong intermolecular interactions chlorine atoms bring...
Abstract Designing new acceptors is critical for intrinsically stretchable organic solar cells (IS‐OSCs) with high efficiency and mechanical robustness. However, nearly all polymer exhibit limited high‐performance small molecular are very brittle. In this regard, we select thienylene‐alkane‐thienylene (TAT) as the conjugate‐break linker synthesize four dimerized by regulation of connecting sites halogen substitutions. It found that substitutions considerably impact overall electronic...
Abstract This study focuses on the synthesis and performance of non‐fullerene acceptors (NFAs) with varying chlorine dispersion in organic solar cells (OSCs). Four chlorine‐mediated acceptors, BO3Cl‐ a , γ β BOEH3Cl‐ are synthesized isomeric terminal groups then integrated donor PBDB‐TF to fabricate OSCs. It finds that increased improves device efficiency enhanced current ‐based devices achieving power conversion (PCE) over 19%, which is one highest values reported for asymmetrically...
Over the last ten years, polymer solar cells have been developed as an attractive alternative to traditional silicon photovoltaic devices. Remarkable progress has made in polymer-fullerene and several polymers shown power conversion efficiencies (PCEs) greater than 7%. The most important recent development synthesis of new low bandgap with optimal properties for cells. Herein we provide overview key strategies optimization highest occupied molecular orbital (HOMO) lowest unoccupied (LUMO)...
A series of semiconducting copolymers (PTAT-x) containing extended π-conjugated tetrathienoanthracene units have been synthesized. It was shown that the conjugation system enhanced π-π stacking in polymer/PC(61)BM blend films and facilitated charge transport heterojunction solar cell devices. After structural fine-tuning, polymer with bulky 2-butyloctyl side chains (PTAT-3) exhibited a PCE 5.6% when it blended PC(61)BM.
The photovoltaic effect in organic materials is an interesting research area because it offers fundamental knowledge, waiting to be explored, and the potential offer low-cost technology replace traditional inorganic solar cells. Worldwide effort this largely motivated by desire develop a new platform cost-effectively harvest energy. Currently, researchers from different disciplines are focusing on developing materials, performing physical studies gain basic understanding of charge separation...
We report synthesis and characterizations of two novel series polymers, namely the PBTZ PBIT series. The PBTZ1 polymer was synthesized as a copolymer 4,8-bis(2-butyloctyl)benzo[1,2-b:4,5-b′]dithiophene (BDT) along with 2,5-bis(2-ethylhexyl)-3,6-bisthiazol-2-yl-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (TzDPP), while PBTZ2 TzDPP 2-(1-butylheptyl)thieno[3,4-d]thiazole (TTz). based on dithienopyrrolobenzothiadiazole (DPBT), BDT also synthesized. polymers showed enhanced ground excited state...