A5014909650- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Thin-Film Transistor Technologies
- Fullerene Chemistry and Applications
- Synthesis and Properties of Aromatic Compounds
- Semiconductor materials and interfaces
- Silicon and Solar Cell Technologies
Southern University of Science and Technology
2020-2025
Hong Kong Polytechnic University
2022-2025
Abstract For organic solar cells to be competitive, the light-absorbing molecules should simultaneously satisfy multiple key requirements, including weak-absorption charge transfer state, high dielectric constant, suitable surface energy, proper crystallinity, etc. However, systematic design rule in achieve abovementioned goals is rarely studied. In this work, guided by theoretical calculation, we present a rational of non-fullerene acceptor o-BTP-eC9, with distinct photoelectric properties...
Abstract The innovation of non‐fullerene acceptors (NFAs) enables the rapid progress organic solar cells (OSCs) in power conversion efficiencies to over 19%, endowing OSCs with great potential toward real‐world application. In this critical review, we outline recent advances NFA‐based ‐ from ITIC‐ Y6‐family, exemplify structure–performance correlations, and cover material chemistry nanomorphology controlling. addition, point out possible degradation mechanisms behind devices strategies for...
It revealed the packing arrangement of three representative chlorinated NFAs, showing differences from linear to compact 3D network structures, which suggests evolution direction NFA materials with gradually enhanced device performance.
Two novel oligomers boost the 1 cm 2 device to achieve a remarkable PCE exceeding 17% using green solvent in open-air without post-treatment. In-depth situ & ex studies elucidate mechanisms of action oligomers. This work demonstrates effective guidelines for future manufacturing.
Open AccessCCS ChemistryRESEARCH ARTICLES30 Jun 2024Molecular Skeletons Modification Induces Distinctive Aggregation Behaviors and Boosts the Efficiency Over 19% in Organic Solar Cells Hanjian Lai, Xue Yongwen Lang, Yongmin Luo, Liang Han, Yulin Zhu, Shilong Xiong, Xiangyu Shen, Yafei Ding, jiaying Wu, Gang Li Feng He Lai , Lang Luo Han Zhu Xiong Shen Ding Wu https://doi.org/10.31635/ccschem.024.202404482 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack...
Two highly crystalline 2D acceptors, ATIC-C11 and ATIC-BO, with acenaphthene-expanded quinoxaline central cores, have been demonstrated very different characteristics in ternary organic solar cells (OSCs). The difference side chains induces their distinctive molecular packing mode unique crystal structure, which displays a 3D structure an elliptical framework, ATIC-BO gives rectangular framework. Their high crystallinity contributes to organized devices, thus low energetic disorder...
Abstract This study focuses on the synthesis and performance of non‐fullerene acceptors (NFAs) with varying chlorine dispersion in organic solar cells (OSCs). Four chlorine‐mediated acceptors, BO3Cl‐ a , γ β BOEH3Cl‐ are synthesized isomeric terminal groups then integrated donor PBDB‐TF to fabricate OSCs. It finds that increased improves device efficiency enhanced current ‐based devices achieving power conversion (PCE) over 19%, which is one highest values reported for asymmetrically...
Abstract Blade coating is a promising tool for upscaling organic solar cells (OSCs). However, the performances of blade‐coated OSCs still lag behind their spin‐coated counterparts, limiting competitive edge towards commercialization. One main reasons that controlling film aggregation kinetics and morphology becomes challenging during transition from spin to blade coating, especially when using high boiling point solvents, which can result in excessive aggregation. Therefore, deeper...
Abstract End group modification is a crucial strategy for fine‐tuning non‐fullerene acceptors in organic solar cells (OSCs). Extending the conjugation of end groups enhances electron delocalization, promotes tighter intermolecular stacking, and improves crystallinity spectral absorption. In this study, series isomeric dimer with conjugation‐extended synthesized to investigate how position extension affects performance dimers. Using one‐pot Still coupling method, three dimers inner extensions...
Noncovalent conformational lock (NCL) is a beneficial noncovalent intramolecular interaction that assists in maintaining the molecular planar conformation. Such conformation favorable for shorter distance and higher crystallinity, further yielding more efficient charge transfer power conversion efficiency (PCE). In this contribution, pair of isomeric small-molecular nonfullerene acceptors (THP-4F HPT-4F) were designed synthesized based on central core modification. HPT-4F with negligible...
Ternary organic solar cells (OSCs) are the feasible and efficient strategy to achieve high-performance OSCs. It is of great significance develop a superior third component candidate for constructing ternary In this work, we intelligently designed synthesized dimerized small molecule donor by connecting two asymmetric donors with vinyl group, which named DSMD-βV. This innovative oligomeric DSMD-βV not only exhibits complementary absorption cascade energy level arrangement PM6 BTP-eC9, but...
Advances in improving the operational lifetime of highly efficient organic photovoltaic (OPV) and understanding photo-degradation mechanisms molecular level are currently limited, especially on promising inverted OPV, posing critical challenges to commercialization. Here, we demonstrate a radical scavenger (3-(3,5-Di-tert-butyl-4-hydroxyphenyl)propionic acid) capped ZnO (BHT@ZnO) nanoparticles as electron transport layer providing effective surface oxygen vacancy passivation reactive capture...