A5100461718- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Organic Light-Emitting Diodes Research
- Perovskite Materials and Applications
- Molecular Junctions and Nanostructures
- Semiconductor materials and interfaces
- Electrochemical Analysis and Applications
- Synthesis and Properties of Aromatic Compounds
- Thin-Film Transistor Technologies
- Luminescence and Fluorescent Materials
- Carbon Nanotubes in Composites
- Adsorption and biosorption for pollutant removal
- Nanowire Synthesis and Applications
- Surface Modification and Superhydrophobicity
- Odor and Emission Control Technologies
- Fullerene Chemistry and Applications
- Polymer Surface Interaction Studies
- Advanced Memory and Neural Computing
- Extraction and Separation Processes
- Analytical Chemistry and Sensors
- Covalent Organic Framework Applications
- Electrodeposition and Electroless Coatings
- Advanced biosensing and bioanalysis techniques
- Advanced Sensor and Energy Harvesting Materials
- Polymer crystallization and properties
Qilu University of Technology
2024
Shandong Academy of Sciences
2024
Hunan University of Arts and Science
2020-2023
Guangdong University of Technology
2023
University of Chinese Academy of Sciences
2023
Hunan University of Science and Technology
2023
The First People's Hospital of Changde
2020-2021
Materials Science & Engineering
2021
Beijing National Laboratory for Molecular Sciences
2020
Institute of Chemistry
2020
Three new benzo[1,2-b:4,5-b′]difuran-based donor–acceptor conjugated polymers, namely poly{4,8-bis(2′-ethylhexyloxy)benzo[1,2-b;3,4-b′]difuran-alt-5,5-(4′,7′-di-2-thienyl-5′,6′-dioctyloxy-2′,1′,3′-benzothiadiazole)}(PBDFDODTBT), poly{4,8-bis(2′-ethylhexyloxy)benzo[1,2-b;3,4-b′]difuran-alt-5,5-(4′,7′-di-2-thienyl-2-octyl-2′,1′,3′-benzotriazole)}(PBDFDTBTz), poly{4,8-bis(2′-...
Small molecule donor/polymer acceptor bulk-heterojunction films with both compounds strongly absorbing have great potential for further enhancement of the performance organic solar cells. By employing a newly synthesized small donor commercially available polymer in solution-processed fullerene-free system, high power conversion efficiency close to 4% is reported. As service our authors and readers, this journal provides supporting information supplied by authors. Such materials are peer...
Three low bandgap isoindigo-based conjugated polymers were synthesized. The polymer films exhibit broad absorption bands in the wavelength region from 300 nm to 810 nm. <bold>PBDTID</bold> exhibited relatively better photovoltaic properties with a PCE of up 0.9%.
A new donor–acceptor type copolymer, namely poly{4,8-bis(2-ethylhexyloxy)benzo[1,2-b:3,4-b′]difuran-alt-6-octylnaphtho[2,3-c]thiophene-4,9-dione} (PBDFNTDO) was synthesized by a Stille coupling reaction and characterized 1H NMR, GPC, TGA, UV-Vis absorption spectroscopy cyclic voltammetry. PBDFNTDO is readily soluble in common organic solvents with number-average molecular weight (Mn) of 10.7 kDa mol−1 polydispersity index 1.71. TGA analysis shows the copolymer exhibits good thermal stability...
Three new alkylthienyl substituted benzodithiophene (BDT)-based polymers, poly{4,8-bis(2′-ethylhexylthiophene)benzo[1,2-b;3,4-b′]dithiophene-alt-5,5-(4′,7′-di-2-thienyl-5′,6′-dioctyloxy-benzo[c][1,2,5]oxadiazole)}(PBDTTDTBO), poly{4,8-bis(2′-ethylhexylthiophene)benzo[1,2-b;3,4-b′]dithiophene-alt-5,5-(4′,7′-di-2-thienyl-5′,6′-dioctyloxy-2′,1′,3′-benzothiadiazole)}(PBDTTDTBT) and poly{4,8-bis(2′-ethyl...
Abstract A new dithienyl benzotriazole‐based conjugated polymer was synthesized by Suzuki coupling reaction. The found to be soluble in common organic solvents, such as chloroform, tetrahydrofuran and chlorobenzene, with excellent film‐forming properties. structure of the confirmed 1 H NMR, molecular weights determined GPC thermal properties investigated TGA DSC. films exhibited an absorption band wavelength range 300 610 nm. Preliminary photovoltaic cells based on composite indium tin oxide...
In this work, the quantitative relationship in heredity of β-phase from a solution to thin film based on poly(9,9-dioctylfluorene) (PFO), mechanism formation, and effects contents hole mobility were investigated. The PFO was characterized through UV–vis absorption. Results indicated that can be completely transferred solutions films during drying form films. stable could manage dynamic changes liquid state thin-film state. content higher diluted solutions, reason revealed light scattering....
The correlation between molecular structures and aggregations provides insight for designing conjugated small molecules solar cells.
A new low bandgap conjugated polymer—PBDFTT-C was synthesized from thieno-[3,4-b]thiophene and benzo[1,2-b:4,5-b′]difuran units by Stille coupling reactions. The structure verified 1H NMR elemental analysis, the molecular weight determined gel permeation chromatography (GPC) thermal properties were investigated thermogravimetric analysis (TGA). PBDFTT-C showed a HOMO energy level of −5.27 eV. polymer film displayed broad absorption in wavelength region 300 nm to 840 with 1.48 field effect...
The large current densities attained by carbon nanotube enabled vertical field effect transistors using crystalline organic channel materials are somewhat unexpected given the known anisotropy in mobility of organics and their conventional ordering on dielectric surfaces which tends to orient high axes parallel surface. This seeming contradiction is resolved finding that nanotubes induce a molecular reorients favor flow direction perpendicular substrate
The synergistic effect of the selenophene-containing core and regioisomeric monochlorinated terminals for improving molecular packing, crystallinity, film morphology, photovoltaic performance.
Abstract A new donor–acceptor type polyfluorene derivative, poly[9,9‐dioctyl‐2,7‐fluorene‐alt‐(4,7‐bis(2′‐thienyl)‐2‐octyl‐2,1,3‐benzotriazole)] (PFDTBTz), is synthesized by a Suzuki cross‐coupling polymerization reaction. The optical, electrochemical, photovoltaic, and electroluminescence properties of PFDTBTz are investigated in detail. maximum power conversion efficiency (PCE) the PSCs based on PFDTBTz/PC 71 BM (1:2 w/w) reaches 2.1% with short circuit current density ( J sc ) 5.73 mA ·...
Maximizing the power conversion efficiency of organic solar cells requires simultaneous optimization its short‐circuit current density, fill factor, and open‐circuit voltage V oc . Several key parameters device model needed to understand these quantities have not been reliably determined, even for prototypical poly(3‐hexylthiophene):phenyl‐C 61 ‐methylbutyric ester (P3HT:PCBM) photoactive layer (PAL). Detailed analysis loss mechanisms at contacts their rational possible. Here, using...
The effects of alkyl side-chain length with different carbon atom number, called poly(9,9di-hexlyfluorene) (PF6), poly(9,9-diheptylfluorene) (PF7), poly(9,9-dioctylfluorene) (PF8), poly(9,9-dinonylfluorene) (PF9), and poly(9,9-didecylfluorene) (PF10), on the polyfluorene (PF) single-chain conformation, β its stability chain aggregation in solution dynamic process were systematically investigated by dynamic/static light scattering, UV–vis absorption spectra, photoluminescence scanning...
Two new D–A alternating copolymers, PBDFFBT and PBDTFBT, featuring a fluorinated benzothiazole (BT) electron-acceptor unit the electron-donor segments of benzo[1,2-b:4,5-b′]difuran (BDF) or benzo[1,2-b:4,5-b′]dithiophene (BDT), were prepared by standard Stille cross-coupling reaction. The resulting copolymers characterized TGA, GPC, UV-vis absorption spectroscopy cyclic voltammetry measurements. PBDTFBT show good film forming properties. Bulk heterojunction polymer photovoltaic devices based...
A mutual transformation dynamic process and mechanism between the α-conformation β-conformation in PFO solution.
A series of donor–acceptor (D–A) copolymers from a benzodithiophene (BDT) donor unit and naphtho[2,3-c]thiophene-4,9-dione (NTDO) acceptor with different side chains, PBDTNTDO-C1, PBDTNTDO-C2 PBDTNTDO-C3, were synthesized by standard Stille cross-coupling polymerization. The thermal, optical electrochemical properties the well investigated. Preliminary investigations based on device structure ITO/PEDOT : PSS/polymer: PC71BM (1 2)/Ca/Al showed power conversion efficiencies (PCEs) 1.96% for...
A new building block of naphtho[1,2-b:5,6-b′]difuran (NDF) with alkyl chains was firstly designed and synthesized. NDF used as the electron donor unit in constructing a low band gap copolymer (PNDFDTBT). polymer solar cell configuration ITO/PEDOT:PSS/PNDFDTBT:PC71BM (1 : 2,w/w)/Ca/Al demonstrates promising power conversion efficiency (PCE) 4.5%.
Abstract The interface between the organic semiconductor and dielectric plays an important role in determining device performance of field‐effect transistors (OFETs). Although self‐assembled monolayers (SAMs) made from organosilanes have been widely used for modification to improve OFETs, they suffer incontinuous lack uniform coverage layer. Here, it is reported that by introduction a solution‐processed organozinc compound as layer silane SAM, improved surface morphology reduced polarity can...