A5059493317- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Thin-Film Transistor Technologies
- Organic Light-Emitting Diodes Research
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Molecular Junctions and Nanostructures
- Luminescence and Fluorescent Materials
- Nanowire Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
- Nuclear physics research studies
- Laser Material Processing Techniques
- Ga2O3 and related materials
- Chalcogenide Semiconductor Thin Films
- Photorefractive and Nonlinear Optics
- Silicon and Solar Cell Technologies
- GaN-based semiconductor devices and materials
- Graphene research and applications
- Copper-based nanomaterials and applications
- 2D Materials and Applications
- TiO2 Photocatalysis and Solar Cells
- X-ray Diffraction in Crystallography
- Advanced Photocatalysis Techniques
- Advanced Fiber Laser Technologies
Shandong University
2016-2025
State Key Laboratory of Crystal Materials
2016-2025
The University of Melbourne
2016-2025
Shanghai Center for Brain Science and Brain-Inspired Technology
2024
Huashan Hospital
2024
Fudan University
2024
Shenzhen University
2011-2018
Beihang University
2010-2018
Beijing Jiaotong University
2015
Beijing Institute of Optoelectronic Technology
2015
Abstract Improving power conversion efficiency (PCE) is important for broadening the applications of organic photovoltaic (OPV) cells. Here, a maximum PCE 19.0% (certified value 18.7%) achieved in single‐junction OPV cells by combining material design with ternary blending strategy. An active layer comprising new wide‐bandgap polymer donor named PBQx‐TF and low‐bandgap non‐fullerene acceptor (NFA) eC9‐2Cl rationally designed. With optimized light utilization, resulting binary cell exhibits...
The variation of the vertical component distribution can significantly influence photovoltaic performance organic solar cells (OSCs), mainly due to its impact on exciton dissociation and charge-carrier transport recombination. Herein, binary devices are fabricated via sequential deposition (SD) D18 L8-BO materials in a two-step process. Upon independently regulating spin-coating speeds each layer deposition, optimal SD device shows record power conversion efficiency (PCE) 19.05% for...
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...
Large-scale arrays of highly oriented hexagonal ZnO nanorods and nanotubes were fabricated on arbitrary ZnO-film-coated substrates using a low-temperature chemical-liquid-phase deposition method. The obtained nanoproducts characterized, the growth mechanism is proposed.
Abstract The ternary strategy, introducing a third component into binary blend, opens simple and promising avenue to improve the power conversion efficiency (PCE) of organic solar cells (OSCs). judicious selection an appropriate component, without sacrificing photocurrent voltage output OSC, is significant importance in devices. Herein, highly efficient OSCs fabricated using approach are demonstrated, wherein novel non‐fullerene acceptor L8‐BO‐F designed incorporated PM6:BTP‐eC9 blend. three...
Morphology optimization is critical for achieving high efficiency and stable bulk-heterojunction (BHJ) organic solar cells (OSCs). Herein, the use of 3,5-dichlorobromobenzene (DCBB) with volatility low cost to manipulate evolution BHJ morphology improve operability photostability OSCs proposed. Systematic simulations reveal charge distribution DCBB its non-covalent interaction active layer materials. The addition can effectively tune aggregation PBQx-TF:eC9-2Cl during film formation,...
Abstract Ternary organic solar cells are promising alternatives to the binary counterpart due their potential in achieving high performance. Although a growing number of ternary recently reported, less effort is devoted morphology control. Here, fabricated using wide‐bandgap polymer PBT1‐C as donor, crystalline fused‐ring electron acceptor ITIC‐2Cl, and an amorphous fullerene derivative indene‐C 60 bisadduct (ICBA) acceptor. It found that ICBA can disturb π–π interactions ITIC‐2Cl molecules...
A ternary structure has been demonstrated as being an effective strategy to realize high power conversion efficiency (PCE) in organic solar cells (OSCs); however, general materials selection rules still remain incompletely understood. In this work, two nonfullerene small-molecule acceptors 3TP3T-4F and 3TP3T-IC are synthesized incorporated a third component PM6:Y6 binary blends. The photovoltaic behaviors the resultant OSCs differ significantly, despite comparable energy levels. It is found...
The development of organic solar cells (OSCs) with thick active layers is crucial importance for the roll-to-roll printing large-area panels. Unfortunately, increasing layer thickness usually results in a significant reduction efficiency. Herein, we fabricated efficient thick-film OSCs an consisting one polymer donor and two non-fullerene acceptors. acceptors were found to possess enlarged exciton diffusion length mixed phase, which beneficial generation dissociation. Additionally, by...
Minimizing energy loss is of critical importance in the pursuit attaining high-performance organic solar cells. Interestingly, reorganization plays a crucial role photoelectric conversion processes. However, understanding relationship between and losses has rarely been studied. Here, two acceptors, Qx-1 Qx-2, were developed. The energies these acceptors during processes are substantially smaller than conventional Y6 acceptor, which beneficial for improving exciton lifetime diffusion length,...
The development of polymerized small-molecule acceptors has boosted the power conversion efficiencies (PCEs) all-polymer organic photovoltaic (OPV) cells to 17%. However, polymer donors suitable for OPV are still lacking, restricting further improvement their PCEs. Herein, a new donor named PQM-Cl is designed and its performance explored. negative electrostatic potential low average local ionization energy distribution surface enable efficient charge generation transfer process. When...
Compared with inorganic or perovskite solar cells, the relatively large non-radiative recombination voltage losses (ΔVnon-rad ) in organic cells (OSCs) limit improvement of open-circuit (Voc ). Herein, OSCs are fabricated by adopting two pairs D-π-A polymers (PBT1-C/PBT1-C-2Cl and PBDB-T/PBDB-T-2Cl) as electron donors a wide-bandgap molecule BTA3 acceptor. In these blends, charge-transfer state energy (ECT high 1.70-1.76 eV is achieved, leading to small energetic differences between singlet...
Volatile solid additives (SADs) are considered as a simple yet effective approach to tune the film morphology for high-performance organic solar cells (OSCs). However, structural effects of SADs on photovoltaic performance still elusive. Herein, two volatilizable were designed and synthesized. One is SAD1 with twisted conformation, while other one planar SAD2 S···O noncovalent intramolecular interactions (NIIs). The theoretical experimental results revealed that smaller space occupation can...
By constructing a ternary cell with B1:BO-2Cl:BO-4Cl donor:acceptors combination, an outstanding power conversion efficiency (PCE) of 17.0% (certified to be 16.9%) has been realized for all-small-molecule organic solar cells (ASM-OSCs).
The large energy loss (Eloss ) is one of the main obstacles to further improve photovoltaic performance organic solar cells (OSCs), which closely related charge transfer (CT) state. Herein, ternary donor alloy strategy used precisely tune CT state (ECT and thus Eloss for boosting efficiency OSCs. elevated ECT in OSCs reduce generation (ΔECT ), promote hybridization between localized excitation nonradiative (ΔEnonrad ). Together with optimal morphology, afford an impressive power conversion...
Efficient photon utilization is key to achieving high-performance organic photovoltaic (OPV) cells. In this study, a multiscale fibril network morphology in PBQx-TCl:PBDB-TF:eC9-2Cl-based system constructed by regulating donor and acceptor phase-transition kinetics. The distinctive process crystal size are systematically investigated. PBQx-TCl eC9-2Cl form structures with diameters of ≈25 nm ternary films. Additionally, fine fibrils assembled PBDB-TF uniformly distributed over the networks...
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 Large voltage losses are the main obstacle for achieving high efficiency in organic solar cells (OSCs). Here we construct ternary OSCs by introducing an asymmetric small molecule acceptor AITC into PBDB-TCl : BTP-eC9 system and demonstrate effectiveness simultaneously decreasing energy disorder non-radiative losses. It is found that introduction of can modify domain size increase degree crystallinity, which enhances open-circuit power conversion (19.1%, certified as 18.9%)....
By designing new terpolymers, we tuned the molecular orientation to obtain an ordered morphology with suppressed energetic disorder. Thus, boost PCE of all-PSCs over 18%.
All-polymer organic photovoltaic (OPV) cells possessing high performance and mechanical robustness are promising candidates for flexible wearable devices. However, developing photoactive materials with good properties so far remains challenging. In this work, a polymer donor PBDB-TF weight-average molecular weight (Mw ) is introduced to enable highly efficient all-polymer OPV featuring excellent reliability. By incorporating the high-Mw as third component into PBQx-TF:PY-IT blend, bulk...
A new morphology regulation approach using solid additive, 1,3,5-trimethoxybenzene, can restrict energetic disorder and optimize the nanoscale of organic solar cells, achieves a high power conversion efficiency 19.30%.