A5019948530- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Thin-Film Transistor Technologies
- Nanowire Synthesis and Applications
- Organic Light-Emitting Diodes Research
- Intermetallics and Advanced Alloy Properties
- solar cell performance optimization
- Quantum Dots Synthesis And Properties
- Semiconductor materials and interfaces
- Molecular Junctions and Nanostructures
- Organic and Molecular Conductors Research
- Land Use and Ecosystem Services
- Silicon and Solar Cell Technologies
- TiO2 Photocatalysis and Solar Cells
- Chalcogenide Semiconductor Thin Films
- Advanced Memory and Neural Computing
- Folate and B Vitamins Research
- Metabolism and Genetic Disorders
- Advanced Sensor and Energy Harvesting Materials
- Genetics and Neurodevelopmental Disorders
- Bacteriophages and microbial interactions
- Genomics and Phylogenetic Studies
- Catalytic Processes in Materials Science
- Fullerene Chemistry and Applications
Shenzhen Technology University
2021-2025
Children's Hospital
2024
Shandong University
2024
Hospital for Sick Children
2024
South China University of Technology
2024
Hunan Normal University
2020-2023
Beijing University of Chemical Technology
2022-2023
TPV Technology (China)
2020-2021
Sengkang General Hospital
2020
Hong Kong University of Science and Technology
2016-2019
Both fluorine and ester substituted monothiophene yielded a novel thiophene derivative FE-T. The resulting polymer donor S1 enabled single-junction non-fullerene solar cell with over 16% efficiency.
Recent advances in the development of polymerized A-D-A-type small-molecule acceptors (SMAs) have promoted power conversion efficiency (PCE) all-polymer solar cells (all-PSCs) over 13%. However, monomer an SMA typically consists a mixture three isomers due to regio-isomeric brominated end groups (IC-Br(in) and IC-Br(out)). In this work, two isomeric are successfully separated, regioisomeric issue is solved, polymer acceptors, named PY-IT, PY-OT, PY-IOT, developed, where PY-IOT random...
To achieve efficient non-fullerene organic solar cells, it is important to reduce the voltage loss from optical bandgap open-circuit of cell. Here we report a highly cell with high 1.08 V and small 0.55 V. The performance was enabled by novel wide-bandgap (2.05 eV) donor polymer paired narrow-bandgap (1.63 small-molecular acceptor (SMA). Our morphology characterizations show that both SMA can maintain crystallinity in blend film, resulting crystalline domains. As result, our cells realize an...
We report a novel small molecule acceptor (SMA) named FTTB-PDI4 obtained via ring-fusion between the thiophene and perylene diimide (PDI) units of PDI-tetramer with tetrathienylbezene (TTB) core. A voltage loss 0.53 V high power conversion efficiency 10.58% were achieved, which is highest value reported for PDI-based devices to date. By comparing fused nonfused SMAs, we show that introduces several beneficial effects on properties performances material, including more favorable energy...
Ternary OSCs fabricated with two acceptors similar absorption spectra achieved the best PCE of 14.13% an impressive FF 78.2%.
Abstract Developing a high-performance donor polymer is critical for achieving efficient non-fullerene organic solar cells (OSCs). Currently, most high-efficiency OSCs are based on named PM6, unfortunately, whose performance highly sensitive to its molecular weight and thus has significant batch-to-batch variations. Here we report (named PM1) random ternary polymerization strategy that enables with efficiencies reaching 17.6%. Importantly, the PM1 exhibits excellent reproducibility. By...
Bulk heterojunction (BHJ) organic solar cells (OSCs) have attracted intensive research attention over the past two decades owing to their unique advantages including mechanical flexibility, light weight, large area, and low-cost fabrications. To date, OSC devices achieved power conversion efficiencies (PCEs) exceeding 12%. Much of progress was enabled by development high-performance donor polymers with favorable morphological, electronic, optical properties. A key problem in morphology...
The PM7:ITC-2Cl:IXIC-4Cl-based ternary device achieved an excellent PCE of 15.37% with a energy loss 0.42 eV.
Designing new hole-transporting materials (HTMs) with desired chemical, electrical, and electronic properties is critical to realize efficient stable inverted perovskite solar cells (PVSCs) a p-i-n structure. Herein, the synthesis of novel 3D small molecule named TPE-S its application as an HTM in PVSCs are shown. The all-inorganic made using TPE-S, processed without any dopant or post-treatment, highly stable. Compared control devices based on commonly used HTM, PEDOT:PSS, exhibit improved...
It is widely known that the miscibility between donor and acceptor a crucial factor affects morphology thus device performance of nonfullerene organic solar cells (OSCs). In this Letter, we show incorporating third component with lower higher lowest unoccupied molecular orbital (LUMO) level into state-of-the-art PM6:Y6 system can significantly enhance devices. The best results ternary devices are achieved by adding small named ITCPTC (∼5% w/w), which improves power conversion efficiency...
Abstract State‐of‐the‐art organic solar cells (OSCs) typically suffer from large voltage loss ( V ) compared to their inorganic and perovskite counterparts. There are some successful attempts reduce the by decreasing energy offsets between donor acceptor materials, OSC community has demonstrated efficient systems with either small highest occupied molecular orbital (HOMO) offset or negligible lowest unoccupied (LUMO) donors acceptors. However, OSCs based on a donor/acceptor system both HOMO...
The ternary device achieved an excellent PCE of 15.02% with enhancement in both <italic>V</italic><sub>OC</sub> and <italic>J</italic><sub>SC</sub> by adding a red-absorbing SMA high LUMO level.
Abstract Generally, highly efficient organic solar cells require both a high open‐circuit voltage ( V OC ) and short‐circuit current density J SC ). Reducing the energy loss E is an effective way to achieve without compromising photocurrent, which ideal for enhancing power conversion efficiencies (PCEs). Herein, new chlorinated nonfullerene acceptor (ITC‐2Cl) with thiophene‐fused end groups developed. In comparison unchlorinated counterpart (ITCPTC), introduction of Cl improves not only...
High-efficiency organic solar cells are often achieved using toxic halogenated solvents and additives that constrained in industry. Therefore, it is important to develop materials or processing methods enabled highly efficient processed by halogen free solvents. In this paper, we report an innovative method named auxiliary sequential deposition enables 19%-efficiency Our different from the conventional blend casting involves additional of dithieno[3,2-b:2',3'-d]thiophene between depositions...
Abstract Considering the robust and stable nature of active layers, advancing power conversion efficiency (PCE) has long been priority for all‐polymer solar cells (all‐PSCs). Despite recent surge PCE, photovoltaic parameters state‐of‐the‐art all‐PSC still lag those polymer:small molecule‐based devices. To compete with counterparts, judicious modulation morphology thus device electrical properties are needed. It is difficult to improve all concurrently all‐PSCs advanced efficiency, one...
Abstract Tuning the morphology through processing additives represents one of most promising strategies to boost performance organic solar cells (OSCs). However, it remains unclear how oligothiophene‐based solid influence molecular packing and OSCs. Here, two namely 2T 4T, are introduced into state‐of‐the‐art PM6:Y6‐based OSCs understand they film formation process, nanoscale morphology, photovoltaic performance. It is found that additive can improve both donor polymer non‐fullerene...
A mesoporous layer was constructed by a donor-based nanoparticulate water-ink, which facilitates the infiltration of acceptor, allowing fabrication efficient organic solar cells with high thickness tolerance.
Abstract Cyanation is a common chemical modification strategy to fine‐tune the energy levels and molecular packing of organic semiconductors, especially materials used in solar cells (OSCs). Generally, cyanation modify end groups high‐performance small‐molecule acceptors (SMAs). However, has not been investigated on central backbone SMAs, which could introduce stronger intermolecular interaction enhance π–π stacking for rapid charge transport. This paper, first time, reports new...
The long exciton diffusion length (LD) plays an important role in promoting dissociation, suppressing charge recombination, and improving the transport process, thereby performance of organic solar cells (OSCs), especially thick-film OSCs. However, limited LD hinders further improvement device as film thickness increases. Here, organic-metal platinum complex, namely TTz-Pt, is synthesized served a solid additive into D18-Cl:L8-BO system. addition TTz-Pt enhanced crystallinity blends, reduced...