A5001254783- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Transition Metal Oxide Nanomaterials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Organic Light-Emitting Diodes Research
- Organic and Molecular Conductors Research
- Luminescence and Fluorescent Materials
- Synthesis and properties of polymers
- Nanoplatforms for cancer theranostics
- Porphyrin and Phthalocyanine Chemistry
- Photopolymerization techniques and applications
- Organic Chemistry Cycloaddition Reactions
- Catalytic Cross-Coupling Reactions
- Thin-Film Transistor Technologies
- Synthesis and Properties of Aromatic Compounds
- Quantum Dots Synthesis And Properties
- Photochemistry and Electron Transfer Studies
- Synthesis of Organic Compounds
- Advanced Photocatalysis Techniques
- Fullerene Chemistry and Applications
- Chalcogenide Semiconductor Thin Films
- Carbon Nanotubes in Composites
- Flame retardant materials and properties
Wuyi University
2023-2025
Wuyi University
2022
Southern University of Science and Technology
2016-2021
Peking University
2017-2021
Beijing University of Chemical Technology
2015-2016
The differences between the introduction of chlorine and fluorine atoms to small-molecule acceptors were deeply investigated. From single-crystal structures three molecules, Cl-substitution intervention into molecular configuration packing mainly lies in aspects as follows: single molecule configuration, one direction intermolecular arrangement, three-dimensional (3D) packing. First, atom IDIC-4Cl leads a more planar than IDIC-4H IDIC-4F because formation interlocked network induced by...
Halogenation is an effective way to tune the energy levels of organic semiconducting materials. To date, fluorination materials fabricate polymer solar cells (PSCs) has been used far more than chlorination; however, fluorine exchange reactions suffer from low yields and resulting fluorinated always comes with a higher price, which will greatly hinder their commercial applications. Herein, we designed synthesized series chlorinated donor–acceptor (D-A) type polymers, in...
The influence caused by the position of chlorine atom on end groups two non-fullerene acceptors (ITIC-2Cl-δ and ITIC-2Cl-γ) was intensely investigated. single-crystal structures show that ITIC-2Cl-γ has a better molecular planarity closer π-π interaction distance. More importantly, 3D rectangle-like interpenetrating network is formed in beneficial to rapid charge transfer along multiple directions, whereas only linear stacked structure could be observed ITIC-2Cl-δ. acceptor-based solar cells...
A chlorinated acceptor with 2-butyloctyl side chains and a 3D interpenetrated structure in the single crystal shows excellent PCE up to 16.43%.
Abstract It is of great significance to develop efficient donor polymers during the rapid development acceptor materials for nonfullerene bulk‐heterojunction (BHJ) polymer solar cells. Herein, a new polymer, named PBTT‐F, based on strongly electron‐deficient core (5,7‐dibromo‐2,3‐bis(2‐ethylhexyl)benzo[1,2‐ b :4,5‐ c ′]dithiophene‐4,8‐dione, TTDO), developed through design cyclohexane‐1,4‐dione embedded into thieno[3,4‐ ]thiophene (TT) unit. When blended with Y6, PBTT‐F‐based photovoltaic...
In this work, we prepared two novel reactive-type halogen-free and UV-curable phosphorus–nitrogen–silicon synergistic flame retardants.
A benzo[1,2-b:4,5-b′]dithiophene-based donor material with chlorine atoms substituted on its side chains, named PBClT, was designed and developed in order to enhance the open-circuit voltage (Voc) without decreasing charge carrier transfer corresponding blend films. The chlorinated polymer, an excellent possessing a blue-shifted absorbance, resulting desired complementary light absorption low-band gap acceptor materials, for example, ITIC. In addition, multiple chlorination dramatically...
Hydrogel strain sensors with extreme temperature tolerance have recently gained great attention. However, the sensing ability of these hydrogel changes temperature, resulting in variety output signals that causes signal distortion. In this study, double-network hydrogels comprising SiO2 nanoparticles composed polyacrylamide and phytic acid-doped polypyrrole were prepared applied on a wide range, high adhesiveness, invariable sensitivity under flame cold environments. The had stable...
A new family of thieno[3,4-b]thiophene–benzodithiophene terpolymers (PBTClx) have been designed and synthesized, in which the chlorine/fluorine content has adjusted optimized. As chlorine is increased polymers, twist angle between donor acceptor increased, leads to a diminishment planarity conjugation. result, UV–vis absorption continuous blue-shifted, band gap increases from 1.57 2.04 eV when chlorinated moieties 0 100%. The highest occupied molecular orbital (HOMO) levels those polymers...
Chlorinated benzothiadiazole-based polymers with multiple chlorine atoms were designed and synthesized for polymer solar cells to achieve enhanced open-circuit voltage improved power conversion efficiency. Chlorine substitution was found affect molecular orientation, increase crystallinity, thereby alter band gap charge transport properties. The one-chlorine-substituted PCBT4T-2OD exhibited a larger portion of "face-on" orientation than that other two polymers, nonchlorinated PBT4T-2OD...
The chlorinated polymer, PBTCl, has been found to be an efficient donor in nonfullerene polymer solar cells (PSCs), which showed a blue-shifted absorbance compared that of its fluorine analogue (PTB7-th) and resulted more complementary light absorption with acceptor, such as ITIC. Meanwhile, chlorine substitution lowered the HOMO level increased open-circuit voltage corresponding polymer-based devices. 2D GIWAXS analysis illustrated PBTCl/ITIC blend film exhibited "face-on" orientation...
By taking the advantage of chlorination and fully conjugated side chains, <bold>2D-PBTCl</bold> shows a PCE up to 8.81% in non-fullerene solar cells, which corresponds an approximately 28% improvement compared that <bold>PTB7-Th</bold>-based devices.
The large photon energy loss (Eloss) in the conversion from photons to electrons is still one of critical factors limiting performance polymer solar cells (PSCs). In order simultaneously obtain decreased Eloss and expanded spectral response, reasonable design wide band gap conjugated with a low-lying HOMO level great challenge nonfullerene PSCs. this work, four D–A type polymers introduced chlorine atoms on thienyl-side chains BDT units, namely, PBT1Cl-Bz, PBT2Clas-Bz, PBT2Cls-Bz, PBT4Cl-Bz,...
In the present work, we designed and prepared six new thiophene-substituted phenothiazine-based visible photosensitizers (ThPTZs) to solve low absorptivity of phenothiazine in light region.
The chlorination and side-chain extension of benzothiadiazole derivatives can finely manipulate the open-circuit voltage in their solar cells.
The end groups' halogenations among the nonfullerene acceptors (NFAs) were a very useful method to fabricate high-performance NFAs-based organic solar cells (OSCs). We report three NFAs, BTIC-4EO-4F, BTIC-4EO-4Cl, and BTIC-4EO-4Br. They all have fused benzothiadiazole as core unit different dihalogenated groups (IC-2F, IC-2Cl, IC-2Br) terminal unit. Thanks improved intramolecular charge-transfer ability of brominated bromination is more effective than fluorination chlorination in lowering...
Abstract The position of a chlorine atom in charge carrier polymer solar cells (PSCs) is important to boost their photovoltaic performance. Herein, two chlorinated D‐A conjugated polymers PBBD‐Cl‐α and PBBD‐Cl‐β are synthesized based on new building blocks (TTO‐Cl‐α TTO‐Cl‐β) respectively by introducing the into α or β upper thiophene highly electron‐deficient benzo[1,2‐b:4,5‐c′]dithiophene‐4,8‐dione moiety. Single‐crystal analysis demonstrates that chlorine‐free TTO shows π‐π stacking...
The importance of the isomeric orientation a thiophene ring and conjugation length in tuning electrochromic performance polymers, offering promising approach for designing high-performance materials.