A5103183482- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Luminescence and Fluorescent Materials
- Conducting polymers and applications
- Perovskite Materials and Applications
- Analytic and geometric function theory
- Crystallization and Solubility Studies
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Holomorphic and Operator Theory
- biodegradable polymer synthesis and properties
- Polymer crystallization and properties
- Drug Solubulity and Delivery Systems
- Crystallography and molecular interactions
- Molecular Junctions and Nanostructures
- Geometric and Algebraic Topology
- Analytical Chemistry and Chromatography
- Thin-Film Transistor Technologies
- Advanced Harmonic Analysis Research
- Advanced Numerical Analysis Techniques
- Photopolymerization techniques and applications
- Mathematics and Applications
- Polymer Nanocomposites and Properties
- Spectroscopy and Chemometric Analyses
- X-ray Diffraction in Crystallography
Institute of Chemical Industry of Forest Products
2023
Chinese Academy of Forestry
2023
Nanjing Forestry University
2023
Soochow University
2012-2021
University of Jinan
2019
Ollscoil na Gaillimhe – University of Galway
2010-2014
Chinese Academy of Sciences
2008
State Key Laboratory of Polymer Physics and Chemistry
2008
Kwansei Gakuin University
2005-2008
Central South University
2007
Significant effort has been made to develop novel material systems improve the efficiency of near‐infrared organic light‐emitting diodes (NIR OLEDs). Of those, fluorescent chromophores are mostly studied because their advantages in cost and tunability. However, it is still rare for NIR emitters present good color purities range have high external quantum (EQE). Here, a wedge‐shaped D‐π‐A‐π‐D emitter APDC‐DTPA with thermally activated delayed fluorescence property small single‐triplet...
Abstract Multiple resonances induced thermally activated delayed fluorescence (MR‐TADF) has great advantages in high color purity display. Up to now, current MR‐TADF emitters are only based on the boron‐nitrogen‐containing fragment. Reported herein is a novel class of emitter, quinolino[3,2,1‐ de ]acridine‐5,9‐dione (QAO), realized by opposite resonance effect carbonyl and nitrogen atoms, which also smallest TADF emitter reported so far. The QAO‐based pure blue organic light‐emitting diode...
Mixed Pb–In perovskite solar cells are fabricated by using lead(II) chloride and indium(III) with methylammonium iodide. A maximum power conversion efficiency as high 17.55% is achieved owing to the quality of perovskites multiple ordered crystal orientations. As a service our authors readers, this journal provides supporting information supplied authors. Such materials peer reviewed may be re-organized for online delivery, but not copy-edited or typeset. Technical support issues arising...
The development of effective and stable hole transporting materials (HTMs) is very important for achieving high‐performance planar perovskite solar cells (PSCs). Herein, copper salts (cuprous thiocyanate (CuSCN) or cuprous iodide (CuI)) doped 2,2,7,7‐tetrakis( N , ‐di‐ p ‐methoxyphenylamine)‐9,9‐spirobifluorene (spiro‐OMeTAD) based on a solution processing as the HTM in PSCs demonstrated. incorporation CuSCN (or CuI) realizes p‐type doping with efficient charge transfer complex, which...
The fabrication and device parameters of inverted planar heterojunction (PHJ) organic–inorganic lead mixed-halide (CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3−x</sub>Cl<sub>x</sub>) perovskite based solar cells (PSCs) using a:CuAlO<sub>2</sub>as the hole selective buffer layer between ITO electrode PEDOT:PSS were demonstrated.
Perovskite crystallization and interface engineering are regarded as the most crucial factors in achieving high-performance planar heterojunction (PHJ) perovskite solar cells (PSCs). Herein, we demonstrate a thin perylene underlayer via solution-processable method. By using branch-shaped film seed-mediated underlayer, crystalline perovskites with fabric morphology can be formed, which allows for obvious improvement absorption by light scattering effect. With its deep highest occupied...
Abstract Exploiting organic/inorganic hybrid perovskite solar cells (PSCs) with reduced Pb content is very important for developing environment‐friendly photovoltaics. Utilizing of Pb–Sn alloying considered as an efficient route to reduce the risk ecosystem pollution. However, trade‐off between device performance and Sn substitution ratio due instability 2+ a current dilemma. Here, first time, highly Pb–Sn–Cu ternary PSCs are reported by partial replacing PbI 2 SnI CuBr . results in redshift...
Vacuum-evaporated all-inorganic cesium lead bromine perovskite LEDs achieved a maximum external quantum efficiency of 1.55%.
Organic–inorganic halide perovskite solar cells (PSCs) still suffer from the issues of poor reproducibility and inferior stability despite their considerable increase in efficiency. Here, we demonstrate planar PSCs with simultaneously improved device characteristics by introducing a cross-linkable [6,6]-phenyl-C61-butyric styryl dendron ester (PCBSD) into CH3NH3PbIxCl3−x perovskites. The merit C-PCBSD can enhance crystallization perovskites address issue low electron extraction In addition,...
Derivatives based on anthryleno[1,2-b]pyrazine-2,3-dicarbonitrile (DCPA) are used as luminescent materials, to realize near-infrared (NIR) electroluminescence. By functionalizing DCPA with aromatic amine donors, two emitters named DCPA-TPA and DCPA-BBPA designed synthesized. Both molecules have large dipole moments owing the strong intramolecular charge transfer interactions between donors acceptor. Thus, compared doped films, emission of neat films can fully fall into NIR region (>700 nm)...
Effective and stable hole-transporting materials (HTMs) are necessary for obtaining excellent planar perovskite solar cells (PSCs). Herein, we reported a solution-processed composite HTM consisting of polymer poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) small-molecule copper phthalocyanine–3,4′,4″,4‴-tetrasulfonated acid tetrasodium salt (TS–CuPc) with optimized doping ratios. The is crucial not only enhancing the hole transport extraction but also improving...
The maximum external quantum efficiency of the device is 11.46% using PVK doped Li-TFSI as hole-transporting layer.
Hybrid single-emitting layer (SEML) white organic light-emitting diodes (WOLEDs) incorporating blue thermally activated delayed fluorescent (TADF) or materials and yellow phosphors have been widely utilized for solid-state lighting. Nonetheless, developing appropriate host to reduce the large efficiency roll-off at high luminance is still an unsolved issue. Here, two TADF denoted as TRZ-CF TRZ-CzF were synthesized, with electroluminescent emission peaking 476 460 nm, respectively. In...
The anhydrous solvent-free mechanochemical reaction of sulfathiazole, STZ, polymorphs I, III, and V with 10 carboxylic acids was monitored by powder X-ray diffraction (PXRD), attenuated total reflectance infrared (ATR-IR), near-infrared (NIR) spectroscopy. A 1:1 cocrystal observed glutaric acid the strongest acid, oxalic gave a salt. principal components analysis NIR data showed that forms I proceeded to cocrystal, but form III transformed IV before formation. salt formed via complete...
Blue phosphorescent organic light-emitting diode (PhOLED) with a high maximum external quantum efficiency (EQE) of 26.6% was achieved using new material, 2,8-bis(9,9-dimethylacridin-10(9H)-yl)dibenzo[b,d]furan (DBF-DMS) small bandgap, as the host. The device DBF-DMS showed improved performance compared that 1,3-di-9-carbazolylbenzene, which is ascribed to enhancement in carrier injection and transporting abilities material stability DBF-DMS. A lifetime more than 100 h (time 50% initial...
Abstract Thermally activated delayed fluorescence materials can effectively achieve high efficiency by harvesting singlet and triplet excitons in organic light‐emitting diodes (OLEDs). However, the choice of host material has a huge impact on device, especially for near‐infrared (NIR) luminescent material. In this contribution, series are used to match thermally emitter, 3,4‐bis(4‐(diphenylamino)phenyl)acenaphtho[1,2‐b]pyrazine‐8,9‐dicarbonitrile (APDC‐DTPA), fabricating NIR OLEDs. All have...
A facile but effective method is proposed to improve the performance of quantum dot light-emitting diodes (QLEDs) by incorporating a polymer, poly(9-vinlycarbazole) (PVK), as an additive into CdSe/CdS/ZnS (QD) emitting layer (EML). It found that charge balance device with PVK-added EML was greatly improved. In addition, film morphology hole-transporting (HTL) which adjacent EML, substantially The surface roughness HTL reduced from 5.87 1.38 nm, promises good contact between and resulting in...
Efficient electron-injection into the emitting layer (EML) plays a pivotal role in fabrication of high performance blue quantum dot light-emitting diodes (QLEDs). Herein, we reduce electron-transporting barrier at ITO/ETL (electron-transporting layer) interface from 0.7 eV to 0.4 by spin-coating polyethylenimine ethoxylated (PEIE) film (8 nm) on ITO substrate. Meanwhile, was reduced 0.5 0.1 ETL/QD employing incorporation PEIE (0.1 wt%) ZnO layer. These above two interfacial modifications...
The use of in situ tools to monitor the transformation a polymorphic material has potential provide unique information about mechanism and rate polymorphs. In this paper, solution mediated between α β form p-aminobenzoic acid (PABA) was investigated detail. Solubility PABA pure ethanol also reported for first time, allowing accurate determination transition temperature 13.8 °C. For experiments, Raman spectroscopy Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) were used...