A5016131764- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Organic Light-Emitting Diodes Research
- Luminescence and Fluorescent Materials
- Quantum Dots Synthesis And Properties
- Molecular Junctions and Nanostructures
- Chalcogenide Semiconductor Thin Films
- Synthesis and properties of polymers
- Advanced Sensor and Energy Harvesting Materials
- Thin-Film Transistor Technologies
- Silicone and Siloxane Chemistry
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Epoxy Resin Curing Processes
- Fullerene Chemistry and Applications
- Solid-state spectroscopy and crystallography
- Silicon and Solar Cell Technologies
- Photochromic and Fluorescence Chemistry
- Nonlinear Optical Materials Studies
- 2D Materials and Applications
- Semiconductor materials and devices
- Nanomaterials and Printing Technologies
- Semiconductor materials and interfaces
- Liquid Crystal Research Advancements
Chinese Academy of Sciences
2016-2025
University of Chinese Academy of Sciences
2017-2025
Ningbo Institute of Industrial Technology
2016-2025
Xi'an Jiaotong University
2025
Ministry of Agriculture and Rural Affairs
2024
Shenyang Agricultural University
2024
Zhengzhou University
2024
Ningbo University
2024
Xi'an University of Architecture and Technology
2024
Huaiyin Institute of Technology
2023
Ternary heterojunction strategies appear to be an efficient approach improve the efficiency of organic solar cells (OSCs) through harvesting more sunlight. OSCs are fabricated by employing wide bandgap polymer donor (PM6), narrow nonfullerene acceptor (Y6), and PC71 BM as third component tune light absorption morphologies blend films. A record power conversion (PCE) 16.67% (certified 16.0%) on rigid substrate is achieved in optimized PM6:Y6:PC71 ratio 1:1:0.2. The introduction endows with...
Abstract Recent advances in nonfullerene acceptors (NFAs) have enabled the rapid increase power conversion efficiencies (PCEs) of organic photovoltaic (OPV) cells. However, this progress is achieved using highly toxic solvents, which are not suitable for scalable large‐area processing method, becoming one biggest factors hindering mass production and commercial applications OPVs. Therefore, it great importance to get good eco‐compatible processability when designing efficient OPV materials....
A complete investigation of poly(2,6-dimethyl-1,4-phenylene) AEMs with different quaternary ammonium groups is provided comparing the properties and fuel cell performance.
Abstract Organic emitters play a vital role in determining the overall performance of organic light emitting diode (OLED) devices. Traditional fluorescent can only achieve external quantum efficiency (EQE) 5%, far below expectation; therefore many efforts have been spent on increasing EQE OLEDs. Phosphorescence, thermally activated delayed fluorescence, triplet–triplet annihilation, and hybridized local charge transfer are most widely applied approaches to harvest 75% triplet excitons for...
Herein, a simple "Same-A-Strategy" (SAS), constructing p-type and n-type photovoltaic materials with the same electron-accepting (A) unit of benzotriazole, is adopted to initially control energy offsets. Then, chlorine atoms are introduced into conjugated side chain benzo[1,2-b:4,5-b′]dithiophene (BDT) donor polymer fine-tune optoelectronic properties. The chlorinated J52-Cl, blended non-fullerene small molecule acceptor BTA3, yields very offsets (ΔEHOMO = 0.10 eV, ΔELUMO 0.28 eV) decreased...
Abstract A novel small‐molecule acceptor, (2,2′‐((5 E ,5′ )‐5,5′‐((5,5′‐(4,4,9,9‐tetrakis(5‐hexylthiophen‐2‐yl)‐4,9‐dihydro‐s‐indaceno[1,2‐ b :5,6‐ ′]dithiophene‐2,7‐diyl)bis(4‐(2‐ethylhexyl)thiophene‐5,2‐diyl))bis(methanylylidene)) bis(3‐hexyl‐4‐oxothiazolidine‐5,2‐diylidene))dimalononitrile (ITCN), end‐capped with electron‐deficient 2‐(3‐hexyl‐4‐oxothiazolidin‐2‐ylidene)malononitrile groups, is designed, synthesized, and used as the third component in fullerene‐free ternary polymer solar...
All-solution-processing at low temperatures is important and desirable for making printed photovoltaic devices also offers the possibility of a safe cost-effective fabrication environment devices. Herein, an all-solution-processed flexible organic solar cell (OSC) using poly(3,4-ethylenedioxythiophene):poly-(styrenesulfonate) electrodes reported. The yield highest power conversion efficiency 10.12% with high fill factor over 70%, which value metal-oxide-free OSCs reported so far. enhanced...
Non-fullerene all-small-molecule organic solar cells (NFSM-OSCs) have shown potential as OSCs, owing to their high purity, easy synthesis and good reproducibility. However, challenges in the modulation of phase separation morphology limited development. Herein, two novel small molecular donors, BTEC-1F BTEC-2F, derived from molecule DCAO3TBDTT, are synthesized. Using Y6 acceptor, devices based on non-fluorinated DCAO3TBDTT showed an open circuit voltage (Voc ) 0.804 V a power conversion...
Isomeric non-fullerene acceptor guest with large π-conjugation skeleton is used to construct stable organic solar cells efficiencies over 19%.
The donor:acceptor heterojunction has proved as the most successful approach to split strongly bound excitons in organic solar cells (OSCs). Establishing an ideal architecture with selective carrier transport and suppressed recombination is of great importance improve photovoltaic efficiency while remains a challenge. Herein, via tailoring hybrid planar/bulk structure, highly efficient OSCs reduced energy losses (Eloss s) are fabricated. A p-type benzodithiophene-thiophene alternating...
The addition of ZY-4Cl into the host PM6:BTP-eC9 can result in reduced density trap states and suppressed non-radiative recombination, thus enabling ternary device with an obviously lower voltage loss than either binary devices.
Abstract SnO 2 has been universally applied as electron transporting layer (ETL) towards the fabrication of highly efficient perovskite solar cells (PSCs), owing to its unique advantages including low‐temperature solution‐processability, high optical, transmittance and good electrical conductivity. Uncoordinated Sn‐dangling bonds on surface exist deep traps capture photogenerated carriers, causing hysteresis device instability. Fullerene derivatives, though being widely utilized passivator...
This article reviews important advances in dopant-free organic hole-transporting materials for efficient and stable perovskite solar cells since 2020.
Abstract Post‐treatment is of great importance to form nanoscale phase‐separated morphology for all‐small‐molecule organic solar cells (ASM‐OSCs), while the reasons difference between thermal annealing (TA) and solvent (SVA) remain unclear. In this work, influences TA SVA (with three common solvents THF, CS 2 , CF) are systematically investigated based on BT‐2F:N3 through characterization photovoltaic performance, molecular stacking, charge transfer, etc. The results indicate that: i) with...
–CN additives are used to sew defects at perovskite grain boundaries and release GB stresses, resulting in low Young's modulus & high mechanical flexibility. Furthermore, 2F-2CN with a stronger molecular dipole enhances the efficiency stability of inverted f-PSCs, yielding exceptional efficiency.
Organic solar cells, as a cutting-edge sustainable renewable energy technology, possess myriad of potential applications, while the bottleneck problem less than 20% efficiency limits further development. Simultaneously achieving an ordered molecular arrangement, appropriate crystalline domain size, and reduced nonradiative recombination poses significant challenge is pivotal for overcoming limitations. This study employs dual strategy involving development novel acceptor ternary blending to...
Asymmetric substitution of end-groups is first applied in molecular donors. Three commonly used 2-ethylhexyl cyanoacetate (CA), rhodanine (Reh), and 1H-indene-1,3(2H)-dione (ID) are combined to construct a series symmetric asymmetric Correspondingly, the donors SM-CA-Reh SM-CA-ID show largely increased dipole moments (2.14 3.39 D, respectively) enhanced aggregation propensity, as compared those SM-CA, SM-Reh, SM-ID. Using N3 acceptor, interestingly, integrates photovoltaic characteristics...
The defects and phase segregation in perovskite will significantly reduce the performance stability of solar cells (PSCs). In this work, a deformable coumarin is employed as multifunctional additive for formamidinium-cesium (FA-Cs) perovskite. During annealing process perovskite, partial decomposition passivates Pb2+ , iodine, organic cation defects. Additionally, can affect colloidal size distributions, resulting relatively large grain good crystallinity target film. Hence, carrier...