A5041233180- Conducting polymers and applications
- Perovskite Materials and Applications
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Luminescence and Fluorescent Materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Lanthanide and Transition Metal Complexes
- Solid-state spectroscopy and crystallography
- Semiconductor materials and interfaces
- Semantic Web and Ontologies
- Molecular Junctions and Nanostructures
- Advanced battery technologies research
- Nanowire Synthesis and Applications
- Magnetism in coordination complexes
- Silicon and Solar Cell Technologies
- Synthesis and Properties of Aromatic Compounds
- Thin-Film Transistor Technologies
- Advanced Sensor and Energy Harvesting Materials
- Natural Language Processing Techniques
- Luminescence Properties of Advanced Materials
- Biomedical Text Mining and Ontologies
- Advanced Graph Neural Networks
East China Normal University
2019-2025
First Affiliated Hospital of Guangzhou University of Chinese Medicine
2025
Ningbo Institute of Industrial Technology
2014-2024
Chinese Academy of Sciences
2014-2024
University of Science and Technology of China
2024
University of Chinese Academy of Sciences
2017-2022
First People's Hospital of Yunnan Province
2019
Kunming University of Science and Technology
2019
Kunming University
2018
State Council of the People's Republic of China
2016
A stable perovskite heterojunction was constructed for inverted solar cells through surface sulfidation of lead (Pb)-rich films. The formed lead-sulfur (Pb-S) bonds upshifted the Fermi level at interface and induced an extra back-surface field electron extraction. resulting devices exhibited a power conversion efficiency (PCE) >24% with high open-circuit voltage 1.19 volts, corresponding to low loss 0.36 volts. strong Pb-S could stabilize heterojunctions strengthen underlying structures that...
Organic-inorganic perovskite solar cells have recently emerged at the forefront of photovoltaics research. Here, for first time, graphdiyne (GD), a novel two dimension carbon material, is doped into PCBM layer cell with an inverted structure (ITO/PEDOT:PSS/CH3NH3PbI(3-x)Cl(x)/PCBM:GD/C60/Al) to improve electron transport. The optimized PCE 14.8% was achieved. Also, average power conversion efficiency (PCE) PCBM:GD-based devices observed 28.7% enhancement (13.9% vs 10.8%) compared that pure...
An efficient electron transport layer (ETL) plays a key role in promoting carrier separation and extraction planar perovskite solar cells (PSCs). effective composite ETL is fabricated using carboxylic-acid- hydroxyl-rich red-carbon quantum dots (RCQs) to dope low-temperature solution-processed SnO2 , which dramatically increases its mobility by ≈20 times from 9.32 × 10-4 1.73 10-2 cm2 V-1 s-1 . The achieved one of the highest reported mobilities for modified Fabricated PSCs based on this...
Fluorescent emitters have regained intensive attention in organic light emitting diode (OLED) community owing to the breakthrough of device efficiency and/or new mechanism. This provides a good chance develop near‐infrared (NIR) fluorescent emitter and high‐efficiency device. In this work, D‐π‐A‐π‐D type compound with naphthothiadiazole as acceptor, namely, 4,4′‐(naphtho[2,3‐c][1,2,5]thiadiazole‐4,9‐diyl)bis( N,N ‐diphenylaniline) (NZ2TPA), is designed synthesized. The photophysical study...
Abstract Stability has become the main obstacle for commercialization of perovskite solar cells (PSCs) despite impressive power conversion efficiency (PCE). Poor crystallization and ion migration are major origins its degradation under working condition. Here, high‐performance PSCs incorporated with pyridine‐2‐carboxylic lead salt (PbPyA 2 ) fabricated. The pyridine carboxyl groups on PbPyA can not only control but also passivate grain boundaries (GBs), which result in high‐quality film...
Nonfullerene organic solar cells (OSCs) have achieved breakthrough with pushing the efficiency exceeding 17%. While this shed light on OSC commercialization, high-performance flexible OSCs should be pursued through solution manufacturing. Herein, we report a solution-processed based transparent conducting PEDOT:PSS anode doped trifluoromethanesulfonic acid (CF3SO3H). Through low-concentration and low-temperature CF3SO3H doping, polymer anodes exhibited main sheet resistance of 35 Ω sq-1...
Triiodide cesium lead perovskite (CsPbI3 ) has promising prospects in the development of efficient and stable photovoltaics both single-junction tandem structures. However, achieving inverted devices that provide good stability are compatible to remains a challenge, deep insights still not understood. This study finds surface components CsPbI3 intrinsically lead-poor relevant traps p-type with localized states. These deep-energy-level p induce inferior transfer or electrons serious...
Tin-lead (Sn-Pb) perovskite solar cells (PSCs) with near-ideal bandgap still lag behind the pure lead PSCs. Disordered heterojunctions caused by inhomogeneous Sn/Pb ratio in binary film induce large recombination loss. Here, an Sn-Pb is reported homogeneous component and energy distribution introducing hydrazine sulfate (HS) Sn precursor. HS can form hydrogen bond network coordinate FASnI3 thus no longer Pb2+ , which reduces crystallization rate of tin to level analog. The strong bonding...
Inverted CsPbI3 commonly exhibits a more p-type surface than bulk, which induces severe interfacial recombination and, thus, limits the device's Voc and efficiency in inverted perovskite solar cells (PSCs). Here, gradual CsPbI3/PbS heterojunction is constructed to inhibit such through situ chemical sulfidation with N,N′-diphenylthiourea (DPhTA). DPhTA can directly react form PbS induce p- n-type transition at surface, leads energy level bending downward establishing top of region. PSCs...
Abstract Perovskite solar cells have aroused a worldwide research upsurge in recent years due to their soaring photovoltaic performance, ease of solution processing, and low cost. The power conversion efficiency record is constantly being broken has recently reached 26.1% the lab, which comparable established technologies such as crystalline silicon, copper indium gallium selenide cadmium telluride (CdTe) cells. Currently, perovskite are standing at entrance industrialization, where huge...
A new zwitterionic conjugated polyelectrolyte without free counterions has been used as an electron injection material in polymer light-emitting diodes. Both the efficiency and maximum brightness were considerably improved comparison with standard Ca cathode devices. The devices showed very fast response times, indicating that performance is, addition to hole blocking, due dipoles at interface, which facilitate injection.
High-performance polymer solar cells incorporating a low-temperature-processed aluminum-doped zinc oxide (AZO) cathode interlayer are constructed with power conversion efficiency (PCE) of 10.42% based on PTB7-Th:PC71 BM blends (insensitive to the AZO thickness). Moreover, flexible devices poly(ethylene terephthalate)/indium tin substrates PCE 8.93% also obtained, and welldistributed good device stability demonstrated as well.
Chemical anticorrosion of metal electrode with benzotriazole inhibitor enhances the stability perovskite solar cells.
Large opening circuit voltage (Voc) loss and poor moisture stability have significantly hindered the progress of inorganic perovskite solar cells (IPSCs). Here, we report a dual-protection strategy via incorporating monomer trimethylolpropane triacrylate (TMTA) into CsPbI2Br bulk capping surface with 2-thiophenemethylammonium iodide (Th−NI) to ameliorate above issues. Benefiting from growth control effective suppression both recombination, resulting devices show great improved efficiency...
Abstract Fullerene derivatives, which possess extraordinary geometric shapes and high electron affinity, have attracted significant attention for thin film technologies. This study demonstrates an important photovoltaic application using carboxyl‐functionalized carbon buckyballs, C60 pyrrolidine tris‐acid (CPTA), to fabricate transport layers (ETLs) that replace traditional metal oxide‐based ETLs in efficient stable n‐i‐p‐structured planar perovskite solar cells (PSCs). The uniform CPTA is...
Interfacial properties currently hinder the performance of Si/organic heterojunction solar cells for an alternative to high-efficiency and low-cost photovoltaics. Here, we present a simple repeatable wet oxidation method developing surface passivation layer, SiOx, on Si fabrication Si/poly(3,4-ethylene-dioxythiophene):polystyrenesulfonate (PEDOT:PSS) cells. The uniform dense SiOx thin layer introduced by oxidizing aqueous solution H2O2 or HNO3 provided better stronger wettability surface,...
Using polyelectrolytes (P3CT-Na) as hole-transporting materials (HTMs), high performance inverted perovskite solar cells with a PCE of 16.6% could be obtained, which was more than 20% improvement compared those based on the PEDOT:PSS HTM (PCE 13.7%).
Two alcohol-soluble organic molecules are synthesized and introduced into inverted solar cells as the cathode interlayer. A power conversion efficiency high 9.22% is obtained by using more hydrophobic molecule FTBTF-N Morphological studies suggest that design of backbone can help to enhance short-circuit current density fill factor.
Abstract Crystal engineering of CH 3 NH PbI perovskite materials through template‐directed nucleation and growth on 2 nuclei dispersed in a polar fullerene (C 60 pyrrolidine tris‐acid, CPTA) electron transport layer (ETL) (CPTA:PbI ) is proposed as route for controlling crystallization kinetics grain sizes. Chemical analysis the CPTA:PbI template confirms that CPTA carboxylic acid groups can form monodentate or bidentate chelate with Pb(II), resulting lower barrier promotes rapid formation...
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTFullerene-Free Organic Solar Cells with Efficiency Over 12% Based on EDTA–ZnO Hybrid Cathode InterlayerXiaodong Li, Xiaohui Liu, Wenjun Zhang, Hai-Qiao Wang, and Junfeng Fang*View Author Information Key Laboratory of Graphene Technologies Applications Zhejiang Province, Ningbo Institute Materials Technology Engineering, Chinese Academy Sciences, Ningbo, 315201, China*E-mail: [email protected] (Junfeng Fang).Cite this: Chem. Mater. 2017, 29,...