A5100378494- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Thin-Film Transistor Technologies
- Organic Light-Emitting Diodes Research
- Gear and Bearing Dynamics Analysis
- Tribology and Lubrication Engineering
- Molecular Junctions and Nanostructures
- Adhesion, Friction, and Surface Interactions
- Chalcogenide Semiconductor Thin Films
- solar cell performance optimization
- Optical Systems and Laser Technology
- Photochromic and Fluorescence Chemistry
- Fiber-reinforced polymer composites
- Photonic and Optical Devices
- Advanced machining processes and optimization
- Electrospun Nanofibers in Biomedical Applications
- Plasma Diagnostics and Applications
- Luminescence and Fluorescent Materials
- Manufacturing Process and Optimization
- Electrical Fault Detection and Protection
- Natural Fiber Reinforced Composites
- Mineral Processing and Grinding
- Plasma Applications and Diagnostics
- Nuclear Engineering Thermal-Hydraulics
Tianjin University of Technology
2020-2024
Jackson State University
2011-2024
Donghua University
2015-2024
Henan University of Technology
2024
Tongji University
2024
Illinois State University
2024
Xi'an Jiaotong University
2002-2024
Nanchang University
2021-2023
Indiana University Bloomington
2023
Shenzhen Stock Exchange
2021-2023
Abstract Single‐layered organic solar cells (OSCs) using nonfullerene acceptors have reached 16% efficiency. Such a breakthrough has inspired new sparks for the development of next generation OSC materials. In addition to optimization electronic structure, it is important investigate essential solid‐state structure that guides high efficiency bulk heterojunction blends, which provides insight in understanding how pair an efficient donor–acceptor mixture and refine film morphology. this...
A polymer fibril assembly can dictate the morphology framework, in forming a network structure, which is highly advantageous bulk heterojunction (BHJ) organic solar cells (OSCs). fundamental understanding of how to manipulate such and its influence on BHJ device performance crucially important. Here, series donor-acceptor polymers, PBT1-O, PBT1-S, PBT1-C, used systematically investigate relationship between molecular morphology, photovoltaic performance. The subtle atom change side chains...
All-polymer solar cells (all-PSCs) exhibit excellent stability and readily tunable ink viscosity, are therefore especially suitable for printing preparation of large-scale devices. At present, the efficiency state-of-the-art all-PSCs fabricated by spin-coating method has exceeded 11%, laying foundation practical utilization printed A high power conversion (PCE) 11.76% is achieved based on PTzBI-Si:N2200 processing with 2-methyltetrahydrofuran (MTHF, an environmentally friendly solvent)...
The application of polymer solar cells (PSCs) with n-type organic semiconductor as acceptor requires further improving powder conversion efficiency, increasing stability and decreasing cost the related materials devices. Here we report a simplified synthetic route for 4,4,9,9-tetrahexyl-4,9-dihydro-s-indaceno [1,2-b:5,6-b'] dithiophene by using catalyst amberlyst15. Based on this methoxy substitution, two low acceptors less steps, simple post-treatment high yield were synthesized. In...
Abstract While there has been extensive investigation into modulating quasi‐2D perovskite compositions in light‐emitting diodes (LEDs) for promoting their electroluminescence, very few reports have studied approaches involving enhancement of the energy transfer between layers film, which plays important role achieving high‐performance LEDs (PeLEDs). In this work, a bifunctional ligand 4‐(2‐aminoethyl)benzoic acid (ABA) cation is strategically introduced to diminish weak van der Waals gap...
All-polymer solar cells (all-PSCs) composed of conjugated polymers as both donor and acceptor components in bulk heterojunction photoactive layers have attracted increasing attention. However, it is a big challenge to achieve optimal morphology polymer:polymer blends. In response, we report herein new strategy adjust the nanoscale organization for all-PSCs. Specifically, side chain engineering well-known naphthalene diimide (NDI)-based polymer N2200 modulated by introducing fraction linear...
Fused-ring electron acceptors have made significant progress in recent years, while the development of fully non-fused ring has been unsatisfactory. Here, two acceptors, o-4TBC-2F and m-4TBC-2F, were designed synthesized. By regulating location hexyloxy chains, formed planar backbones, m-4TBC-2F displayed a twisted backbone. Additionally, film showed markedly red-shifted absorption after thermal annealing, which indicated formation J-aggregates. For fabrication organic solar cells (OSCs),...
The unidirectional extension of a smaller fused-ring system into larger one in single direction will increase the conjugation length, allowing fine-tuning electronic properties. Here, we designed and synthesized unidirectionally extended fused-8-ring-based nonfullerene acceptor, AOIC, bidirectionally fused-11-ring electron IUIC2, compared these with parent fused-5-ring F5IC. They share same electron-accepting groups alkylphenyl side chains but have different electron-donating units. Core...
Non-fullerene polymer solar cells (NF PSCs) have attracted much attention in recent years due to their rapidly increasing power conversion efficiency (PCE). In this work, two highly efficient ternary NF PSCs with FFs over 78% and PCEs up 13.52% 12.70% are demonstrated by adding a strongly aggregating P1 into the classic PBDB-T:IT-M PBDB-T:ITIC non-fullerene blends. The addition of significantly enhances crystallization blend film, while maintaining desired morphology. devices show improved...
Abstract One of the most important factors that limits efficiencies bulk‐heterojunction organic solar cells (OSCs) is modest open‐circuit voltage ( V oc ) due to their large loss caused by significant nonradiative recombination loss. To boost performance OSCs toward theoretical limit, developing high‐performance donor: acceptor systems featuring low with suppressed losses (<0.30 V) desired. Herein, high based on a polymer donor benzodithiophene‐difluorobenzoxadiazole‐2‐decyltetradecyl...
Polypyrrole (Ppy), as a conductive polymer, is commonly used for nerve tissue engineering because of its good conductivity and non-cytotoxicity. To avoid the inconvenience Ppy processing, it was coated on electrospun poly(l-lactic acid-co-ε-caprolactone)/silk fibroin (PLCL/SF) nanofibers via in situ oxidative polymerization pyrrole monomers this study. Ppy-coated PLCL/SF membranes were characterized by scanning electron microscopy (SEM), atomic force (AFM), Fourier transform infrared...
The high voltage losses ([Formula: see text]), originating from inevitable electron-phonon coupling in organic materials, limit the power conversion efficiency of solar cells to lower values than that inorganic or perovskite cells. In this work, we demonstrate [Formula: text] can fact be suppressed by controlling spacing between donor (D) and acceptor (A) materials (DA spacing). We show typical cells, DA is generally too small, being origin too-fast non-radiative decay charge carriers it...
Double-cable conjugated polymers with near-infrared (NIR) electron acceptors are synthesized for use in single-component organic solar cells (SCOSCs). Through the development of a judicious synthetic pathway, highly sensitive nature 2-(3-oxo-2,3-dihydroinden-1-ylidene)malononitrile (IC)-based basic and protonic solvents is overcome. In addition, an asymmetric design motif adopted to optimize packing donor acceptor segments, enhancing charge separation efficiency. As such, new double-cable...
Abstract Electron‐deficient central core plays a crucial role in the construction of efficient Y‐series non‐fullerene acceptors (NFAs). Here, fused‐ring benzimidazole (BIm) served as for first time to yield new NFA named MZ‐1 and its structural analogue MZ‐2, which is obtained by replacing methyl group on 2C position BIm with trifluoromethyl group. Compared MZ‐1, MZ‐2 shows obviously blue‐shifted absorption lowers highest occupied molecular orbital (HOMO) energy level that more matched...
CZTS nanocrystals possessing an average size of 12 nm have been prepared using a surfactant-free hydrothermal method and their photocatalytic properties tested both in thin films slurry systems.
Abstract Biocompatible polymer scaffolds are promising as potential carriers for the delivery of retinal progenitor cells (RPCs) in cell replacement therapy repair damaged or diseased retinas. The primary goal present study was to investigate effects blended electrospun nanofibrous membranes silk fibroin (SF) and poly(L-lactic acid-co-ε-caprolactone) (PLCL), a novel scaffold, on biological behaviour RPCs vitro . To assess cell-scaffold interaction, were cultured SF/PLCL indicated durations....
By manipulating the active-layer morphologies in OSCs, we achieve different open-circuit-voltages without affecting energy of charge-transfer state.
A novel crosslinkable aminoalkyl‐functionalized polymer, poly[9,9‐bis(6‐( N , ‐diethylamino)propyl)fluorene‐ alt ‐9,9‐bis(hex‐5‐en‐1‐yl)‐fluorene] (PFN‐V), is designed and synthesized. The resulting polymer can be rapidly crosslinked by UV‐curing within 5 s in a nearly quantitative yield based on the “click” chemistry of alkyene end‐groups PFN‐V side chains addition 1,8‐octanedithiol. film exhibits excellent solvent resistance property act as effective cathode interlayer to modify indium tin...
Abstract Exciton lifetime (τ) is crucial for the migration of excitons to donor/acceptor interfaces subsequent charge separation in organic solar cells (OSCs); however, obvious prolongation τ has rarely been achieved. Here, by introducing a solid additive 9‐fluorenone‐1‐carboxylic acid (FCA) into active layer, which comprises nonfullerene acceptor,...
To take advantages of the intense absorption and fluorescence, high charge mobility, dielectric constant CsPbI3 perovskite quantum dots (PQDs), PQD hybrid nonfullerene organic solar cells (OSCs) are fabricated. Addition PQDs leads to simultaneous enhancement open-circuit voltage (VOC ), short-circuit current density (JSC fill factor (FF); power conversion efficiencies boosted from 11.6% 13.2% for PTB7-Th:FOIC blend 15.4% 16.6% PM6:Y6 blend. Incorporation dramatically increases energy...