A5100406165- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Luminescence and Fluorescent Materials
- Gear and Bearing Dynamics Analysis
- Machine Fault Diagnosis Techniques
- Advanced Sensor and Control Systems
- Conducting polymers and applications
- Advanced Battery Materials and Technologies
- Industrial Technology and Control Systems
- Advanced Decision-Making Techniques
- Engineering Diagnostics and Reliability
- Advancements in Battery Materials
- Quantum Dots Synthesis And Properties
- Elevator Systems and Control
- Solid State Laser Technologies
- Carbon Dioxide Capture Technologies
- Ocular and Laser Science Research
- Thin-Film Transistor Technologies
- Vibration and Dynamic Analysis
- Respiratory Support and Mechanisms
- Electric Vehicles and Infrastructure
- Laser Material Processing Techniques
- AI and Big Data Applications
- Power Systems and Technologies
- Seismic Performance and Analysis
Shanghai Dianji University
2019-2024
Xi'an Shiyou University
2024
Shanghai Laser Technology Institute
2023
Chongqing Jiaotong University
2023
Xi'an University of Architecture and Technology
2021
Henan Polytechnic University
2020
South China University of Technology
2017-2019
Xihua University
2018
Xi'an Jiaotong University
2015
Beijing Information Science & Technology University
2014
Purely organic electroluminescent materials, such as thermally activated delayed fluorescent (TADF) and triplet-triplet annihilation (TTA) basically harness triplet excitons from the lowest excited state (T1 ) to realize high efficiency. Here, a material that can convert into singlet high-lying (T2 ), referred here "hot exciton" path, is reported. The energy levels of this compound are determined sensitization nanosecond transient absorption spectroscopy measurements, i.e., small splitting...
Blue thermally activated delayed fluorescence (TADF) emitters that can simultaneously achieve high efficiency in doped and nondoped organic light-emitting diodes (OLEDs) are rarely reported. Reported here is a strategy using tri-spiral donor for such versatile blue TADF emitters. Impressively, by simply extending the nonconjugated fragment molecular length, aggregation-caused emission quenching (ACQ) be greatly alleviated to as 90 % horizontal orientation dipole ratio external quantum...
Abstract Designing thermally activated delayed fluorescence (TADF) materials with an efficient reverse intersystem crossing (RISC) process is regarded as the key to actualize organic light‐emitting diodes (OLEDs) low efficiency roll‐off. Herein, a novel molecular design strategy reported where typical TADF material 10‐phenyl‐10 H , 10′ ‐spiro[acridine‐9, 9′‐anthracen]‐10′‐one (ACRSA) utilized functional electron donor of 2,4,6‐triphenyl‐1,3,5‐triazine(TRZ)‐ p ‐ACRSA and TRZ‐ m ‐ACRSA. It...
<italic>Via</italic>employing a unique universal host, highly efficient full-color, white phosphorescent and TADF OLEDs were achieved with simple unified structure.
We develop a market-based mechanism that enables building Smart Microgrid Operator (SMO) to offer regulation service reserves and meet the associated obligation of fast response commands issued by wholesale market Independent System (ISO) who provides energy purchases reserves.The proposed allows SMO control behavior internal loads through price signals provide feedback ISO.A quantity is transacted between ISO for relatively long period time (e.g., one hour time-scale).During this follows...
A fast radiative rate, highly suppressed nonradiation, and a short exciton lifetime are key elements for achieving efficient thermally activated delayed fluorescence (TADF) organic light-emitting diodes (OLEDs) with reduced efficiency roll-off at high current density. Herein, four representative TADF emitters designed synthesized based on the combination of benzophenone (BP) or 3-benzoylpyridine (BPy3) acceptors, dendritic 3,3″,6,6″-tetra-tert-butyl-9′H-9,3′:6′,9″-tercarbazole (CDTC)...
Abstract An effective strategy toward low‐driving voltage and high‐efficiency fluorescent organic light‐emitting diodes (OLEDs) by long‐range radiative coupling of spatially separated electron–hole pairs is proposed. Charge transfer excited states between p‐type hole‐transport layer n‐type electron‐transport can be achieved although they are an interlayer, giving significantly reduced efficiency roll‐off higher luminance compared with the devices based on interface exciplex. Remarkable...
Nb2O5, as a potential electrochemical material, has been studied extensively due to its superior volumetric stability and safety. In the paper, we report novel method for synthesis of T-Nb2O5/coal-based graphite (CBG) composite via solvothermal combined with calcination overcome limited low level ionic diffusivity electric conductivity Nb2O5. The homogeneous distribution Nb2O5 nanoparticles on coal-based surface can suppress accumulation reduce internal resistance. As an anode material...
This paper applies the XGboost(eXtreme Gradient Boosting) algorithm to fault diagnosis of rolling bearing. XGboost is realization GBDT(gradient boosting decision tree). Generally speaking, tree) slow. XGBoost characterized by fast computation and good performance model. At end this paper, we compare with other tree algorithms, results show that superior algorithms in accuracy time.
As one of the three primary colors that are indispensable in full-color displays, development red emitters is far behind blue and green ones. Here, novel orange-yellow to near-infrared (NIR) based on 5,6-difluorobenzo[c][1,2,5]thiadiazole (BTDF) namely BTDF-TPA, BTDF-TTPA, BTDF-TtTPA were designed synthesized. Density functional theory analysis photophysical characterization reveal these materials possess hybridized local charge-transfer (HLCT) state feature a feasible reverse intersystem...
Abstract A novel nonaromatic amine containing hole‐transporting material, 3,3′‐(2‐methyl‐1,3‐phenylene)diphenoxathiine (mPXTMP), is developed and coevaporated with electron‐transporting materials to form comixed films. Pure‐blue, sky‐blue, green thermally activated delayed fluorescent (TADF) exciplex emissions are observed. Though the mPXTMP:2,4,6‐tri([1,1′‐biphenyl]‐3‐yl)‐1,3,5‐triazine (T2T) bimolecular system exhibits a large singlet–triplet splitting energy (Δ E ST ) of 0.44 eV, its...
Abstract Blue thermally activated delayed fluorescence (TADF) emitters that can simultaneously achieve high efficiency in doped and nondoped organic light‐emitting diodes (OLEDs) are rarely reported. Reported here is a strategy using tri‐spiral donor for such versatile blue TADF emitters. Impressively, by simply extending the nonconjugated fragment molecular length, aggregation‐caused emission quenching (ACQ) be greatly alleviated to as 90 % horizontal orientation dipole ratio external...
In order to find an effective method for urea removal from wastewater, a number of experiments were conducted in batch reactor with α-Al2O3 and η-Al2O3 as catalysts, respectively. The results indicate that catalyst shows significantly higher rate than or the thermal hydrolysis, increases increasing temperature, dosage reaction time. Using catalyst, concentration wastewater is reduced less 1 mg/L at 165°C after 150 min. kinetics study hydrolysis behaves pseudo-first-order reaction. From...
Purely organic intra- and inter-molecular charge transfer emitters are comparatively studied to show how develop high-performance OLEDs through tailoring their excited-state properties.
In the fault diagnosis technology of electric motors, vibration signals during operation contain a large number valuable information. The identification can reflect operating condition motor, thereby helping to repair faulty components. purpose this article is establish vibration-based engine-ball failure diagnostic device. Click in dynamic input prompt perform default restrictions and given soft threshold denoising on collected signals, effects two methods will be compared. Then, signal...
Open-vocabulary Extreme Multi-label Classification (OXMC) extends traditional XMC by allowing prediction beyond an extremely large, predefined label set (typically $10^3$ to $10^{12}$ labels), addressing the dynamic nature of real-world labeling tasks. However, self-selection bias in data annotation leads significant missing labels both training and test data, particularly for less popular inputs. This creates two critical challenges: generation models learn be "lazy'" under-generating...
In order to solve the problem that it is difficult obtain a large amount of motor data support for complex industrial equipment and system modeling in actual scenarios, virtual integrated platform based on machine learning algorithm proposed be developed signal prediction. Taking electrical as an example, combined with database system. It can not only provide visual software ecology algorithmic prediction model, but also continuous optimization model by using management accumulation. The...
Abstract Aiming at the situation that there are many interference factors in collected signals of rolling bearings working harsh and complex environment. Propose A method noise reduction based on principal component analysis (PCA) fault diagnosis classification residual neural network (ResNet). Experimental results show this can effectively complete task identification classification, is superior to LeNet-5, SVM, DNN other common deep learning methods.