A5100654134- Perovskite Materials and Applications
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- Chalcogenide Semiconductor Thin Films
- Thin-Film Transistor Technologies
- Molecular Junctions and Nanostructures
- Spacecraft and Cryogenic Technologies
- Radiation Detection and Scintillator Technologies
- Advanced Sensor and Control Systems
- Luminescence Properties of Advanced Materials
- Semiconductor materials and interfaces
- Atomic and Subatomic Physics Research
- Solid-state spectroscopy and crystallography
- Smart Grid and Power Systems
- Medical Imaging Techniques and Applications
- Nanowire Synthesis and Applications
- Advanced Algorithms and Applications
- Strong Light-Matter Interactions
- 2D Materials and Applications
- Optical properties and cooling technologies in crystalline materials
- Lanthanide and Transition Metal Complexes
- solar cell performance optimization
- Advancements in Solid Oxide Fuel Cells
Zhejiang University
2015-2025
State Key Laboratory of Modern Optical Instruments
2021-2023
Zhejiang University of Science and Technology
2023
Zhejiang Energy Group (China)
2022
Optica
2020
Hangzhou Academy of Agricultural Sciences
2020
University of Electronic Science and Technology of China
2014
China University of Petroleum, Beijing
2011
Wuhan University
2008
The ternary strategy has been widely identified as an effective approach to obtain high-efficiency organic solar cells (OSCs). However, for most OSCs, the nonradiative voltage loss lies between those of two binary devices, which limits further efficiency improvements. Herein, asymmetric guest acceptor BTP-2F2Cl is designed and incorporated into a PM1:L8-BO host blend. Compared with L8-BO neat film, L8-BO:BTP-2F2Cl blend film shows higher photoluminescence quantum yield larger exciton...
X-rays are widely used in probing inside information nondestructively, enabling broad applications the medical radiography and electronic industries. X-ray imaging based on emerging lead halide perovskite scintillators has received extensive attention recently. However, strong self-absorption, relatively low light yield toxicity of these perovskites restrict their practical applications. Here, we report a series nontoxic double-perovskite Cs
The ternary blend is demonstrated as an effective strategy to promote the device performance of organic photovoltaics (OPVs) due dilution effect. While compromise between charge generation and recombination remains a challenge. Here, mixed diluent for further improving efficiency OPV proposed. Specifically, high-performance system with polymer donor, i.e., PM6, nonfullerene acceptor (NFA), BTP-eC9, diluted by diluents, which involve high bandgap NFA BTP-S17 low BTP-S16 (similar that...
All-inorganic perovskite quantum dots (QDs) CsPbX3 (X = Cl, Br, and I) have recently emerged as a new promising class of X-ray scintillators. However, the instability QDs strong optical scattering thick opaque QD scintillator film imped it to realize high-quality robust image. Herein, europium (Eu) doped CsPbBr3 are in situ grown inside transparent amorphous matrix form glass-ceramic (GC) with glass phase serving both encapsulation for The small amount Eu dopant optimizes crystallization...
Abstract Despite the remarkable progress achieved in recent years, organic photovoltaics (OPVs) still need work to approach delicate balance between efficiency, stability, and cost. Herein, two fully non‐fused electron acceptors, PTB4F PTB4Cl, are developed via a two‐step synthesis from single aromatic units. The introduction of two‐dimensional chain halogenated terminals for these acceptors plays synergistic role optimizing their solid stacking orientation, thus promoting an elongated...
Abstract It is very important to fine‐tune the nanoscale morphology of donor:acceptor blend active layers for improving photovoltaic performance all‐small‐molecule organic solar cells (SM‐OSCs). In this work, two new small molecule donor materials are synthesized with different substituents on their thiophene conjugated side chains, including SM1‐S alkylthio and SM1‐F fluorine alkyl substituents, previously reported SM1 an substituent, investigating effect chains molecular aggregation...
Enhancing the luminescence property without sacrificing charge collection is one key to high-performance organic solar cells (OSCs), while limited by severe non-radiative recombination. Here, we demonstrate efficient OSCs with high via design and synthesis of an asymmetric non-fullerene acceptor, BO-5Cl. Blending BO-5Cl PM6 donor leads a record-high electroluminescence external quantum efficiency 0.1%, which results in low voltage loss 0.178 eV power conversion (PCE) over 15%. Importantly,...
Abstract Photo-degradation of organic semiconductors remains as an obstacle preventing their durable practice in optoelectronics. Herein, we disclose that volume-conserving photoisomerization a unique series acceptor-donor-acceptor (A-D-A) non-fullerene acceptors (NFAs) acts surrogate towards subsequent photochemical reaction. Among A-D-A NFAs with fused, semi-fused and non-fused backbones, fully PTIC, representing one rare existing samples, exhibits not only excellent tolerance aerobic...
Abstract Unveiling the correlations among molecular structures, morphological characteristics, macroscopic properties and device performances is crucial for developing better photovoltaic materials achieving higher efficiencies. To achieve this goal, a comprehensive study performed based on four state-of-the-art non-fullerene acceptors (NFAs), which allows to systematically examine above-mentioned from different scales. It’s found that extending conjugation of NFA shows positive effects...
Abstract In this work, an efficiency of 15.17% in the PBDB‐T/PYT all‐PSCs fabricated by a layer‐by‐layer (LbL) deposition technique is achieved synergistically controlling additive dosages, which not only higher than that (14.06%) corresponding bulk heterojunction (BHJ) device, but also top efficient for all‐PSCs. Through studies physical dynamics and morphological characteristics, it found LbL film can effectively improve optical electronic properties, ensure exciton separation, charge...
Reducing the energy loss of sub-cells is critical for high performance tandem organic solar cells, while it limited by severe non-radiative voltage via formation non-emissive triplet excitons. Herein, we develop an ultra-narrow bandgap acceptor BTPSeV-4F through replacement terminal thiophene selenophene in central fused ring BTPSV-4F, constructing efficient cells. The substitution further decrease optical BTPSV-4F to 1.17 eV and suppress exciton BTPSV-4F-based devices. cells with as...
Our work presents a study on the working mechanism of ternary organic photovoltaic devices based non-fullerene acceptors, focusing composition-dependent optoelectronic property variations in blend films and devices.
Abstract Balancing the charge generation and recombination constitutes a major challenge to break current limit of organic photovoltaics (OPVs). To address this issue, an asymmetric non‐fullerene acceptor, namely AC9, is developed high‐performance OPV with champion efficiency 18.43% (18.1% certified) demonstrated. This represents record value among binary OPVs. Comprehensive analysis on exciton dissociation, collection, carrier transport, has been carried out, unveiling that improved device...
The tuning of vertical morphology is critical and challenging for organic solar cells (OSCs). In this work, a high open-circuit voltage (V
Terpolymerization and regioisomerization strategies are combined to develop novel polymer donors overcome the difficulty of improving organic solar cells (OSCs) performance. Two isomeric units, bis(2-hexyldecyl)-2,5-bis(4-chlorothiophen-2-yl)thieno[3,2-b]thiophene-3,6-dicarboxylate (TTO) bis(2-hexyldecyl) 2,5-bis(3-chlorothiophen-2-yl)thieno[3,2-b]thiophene-3,6-dicarboxylate (TTI), obtained incorporated into PM6 backbone via random copolymerization form a series terpolymers. Interestingly,...
Reducing interface nonradiative recombination is important for realizing highly efficient perovskite solar cells. In this work, we develop a synergistic bimolecular interlayer (SBI) strategy via 4-methoxyphenylphosphonic acid (MPA) and 2-phenylethylammonium iodide (PEAI) to functionalize the interface. MPA induces an in-situ chemical reaction at surface forming strong P-O-Pb covalent bonds that diminish defect density upshift Fermi level. PEAI further creates additional negative dipole so...
Abstract Although a suitable vertical phase separation (VPS) morphology is essential for improving charge transport efficiency, reducing recombination, and ultimately boosting the efficiency of organic solar cells (OSCs), there lack theoretical guidance on how to achieve ideal morphology. Herein, relationship between molecular structure VPS pseudo‐planar heterojunction (PPHJ) OSCs established by using surface electrostatic potential (ESP) as bridge. The morphological evolution mechanism...
Abstract Achieving a more balanced charge transport by morphological control is crucial in reducing bimolecular and trap‐assisted recombination enhancing the critical parameters for efficient organic solar cells (OSCs). Hence, facile strategy proposed to reduce crystallinity difference between donor acceptor incorporating novel multifunctional liquid crystal small molecule (LCSM) BDTPF4‐C6 into binary blend. first LCSM based on tetrafluorobenzene unit features low phase transition...
Abstract Antimony trisulfide (Sb 2 S 3 ) is considered to be a promising photovoltaic material; however, the performance yet satisfactory. Poor power conversion efficiency and large open circuit voltage loss have been usually ascribed interface bulk extrinsic defects By performing spectroscopy study on Sb polycrystalline films single crystal, we show commonly existed characteristics including redshifted photoluminescence with 0.6 eV Stokes shift, few picosecond carrier trapping without...
A star-shaped nitrogen heterocyclic-ring acceptor TF1 featuring a unique 3D skeleton was successfully utilized to inhibit excessive molecular aggregation of Y6 improve the stability and performance organic solar cells.