A5100437093- Perovskite Materials and Applications
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- Luminescence and Fluorescent Materials
- Solid-state spectroscopy and crystallography
- Molecular Sensors and Ion Detection
- Solar-Powered Water Purification Methods
- Semiconductor materials and interfaces
- Crystallography and molecular interactions
- Thin-Film Transistor Technologies
- ZnO doping and properties
- Silicon and Solar Cell Technologies
- Synthesis and Properties of Aromatic Compounds
- Thermal Radiation and Cooling Technologies
- Advancements in Battery Materials
- Solar Thermal and Photovoltaic Systems
- Advanced Battery Materials and Technologies
- Metamaterials and Metasurfaces Applications
- Metallurgical Processes and Thermodynamics
- Optical properties and cooling technologies in crystalline materials
Northwestern Polytechnical University
2022-2025
South China University of Technology
2024-2025
Qingdao University
2024
Yanshan University
2024
Ministry of Industry and Information Technology
2024
Peking University
2024
Hubei Normal University
2024
King Abdullah University of Science and Technology
2016-2022
Kootenay Association for Science & Technology
2021
Physical Sciences (United States)
2021
Abstract The performance of state‐of‐the‐art perovskite solar cells is currently limited by defect‐induced recombination at interfaces between the and electron hole transport layers. These defects, most likely undercoordinated Pb halide ions, must either be removed or passivated if cell efficiencies are to approach their theoretical limit. In this work, a universal double‐side polymer passivation introduced using ultrathin poly(methyl methacrylate) (PMMA) films. Very high‐efficiency (≈20.8%)...
The present study of structure–property relationships and disclosure fascinating amplified spontaneous emission (ASE) behavior an organic molecule not only exhibits the individual effect molecular conformation arrangement on properties crystal separately, but also indicates that some concealed elegant solids can be achieved through manipulating polymorphic form. As a service to our authors readers, this journal provides supporting information supplied by authors. Such materials are peer...
27%-efficient perovskite/silicon tandem solar cells are achieved in n–i–p configuration by developing novel electron and hole selective contacts, which combine high broadband transparency with efficient charge extraction.
Abstract In this study, a novel wide‐bandgap small molecule guest material, ITOA, designed and synthesized for fabricating efficient ternary organic solar cells (OSCs) ITOA complements the absorbance of PM6:Y6 binary system, exhibiting strong crystallinity modest miscibility. optimizes morphology by promoting intensive molecular packing, reducing domain size, establishing preferred vertical phase distribution. These features contribute to improved well‐balanced charge transport, suppressed...
Previous findings have suggested a close association between oxygen vacancies in SnO
Abstract Organic additives with multiple functional groups have shown great promise in improving the performance and stability of perovskite solar cells. The can passivate undercoordinated ions to reduce nonradiative recombination losses. However, how these synergistically affect enhancement beyond passivation is still unclear. Specifically, isomeric molecules different substitution patterns or molecular shapes remain elusive designing new organic additives. Here, we report two carbazolyl...
Abstract Self‐assembled monolayers (SAMs) as hole‐collecting materials have made remarkable progress in inverted perovskite solar cells (PSCs). However, the incomplete coverage of SAMs and non‐intimate interface contact between perovskite/SAMs usually cause inferior characteristics significant energy losses at heterojunction interface. Herein, a post‐assembled chelating molecular bridge strategy using 5‐(9H‐carbazol‐9‐yl)isophthalicacid (CB‐PA) is developed to modify buried It found that...
Abstract engineering has emerged as a promising approach to improve the stability and power conversion efficiency of perovskite solar cells (PSCs) by regulating crystallization or defects. Conventional methods typically focus on single functional group, leading deficiency in simultaneously addressing above mentioned two aspects. Here, an innovative using (methylsulfonyl)phenyl)prop‐2‐en‐1‐amine hydroiodide (MSPPAI) is presented concurrently effectively modulate defect passivation. The unique...
A series of highly efficient deep red to near-infrared (NIR) emissive organic crystals 1-3 based on the structurally simple 2'-hydroxychalcone derivatives were synthesized through a one-step condensation reaction. Crystal 1 displays highest quantum yield (Φf) 0.32 among reported single with an emission maximum (λem) over 710 nm. Comparison between bright and nearly nonluminous compounds 4-7 clearly gives evidence that subtle structure modification can arouse great property changes, which is...
Abstract Two coordination complex emitters as well host materials Be(PPI) 2 and Zn(PPI) (PPI = 2‐(1‐phenyl‐1 H ‐phenanthro[9,10‐ d ]imidazol‐2‐yl)phenol) are designed, synthesized, characterized. The incorporation of the metal atom leads to a twisted conformation rigid molecular structure, which improve thermal stability with high T g at around 475 217 °C, respectively. introduction electron‐donating phenol group results in emission color shifting deep‐blue region maximum appears 429 nm....
A donor–acceptor–donor (D–A–D) molecule di(triphenylamine)-thiazolothiazole 1 has been employed in which the central Lewis-basic nitrogen atoms prompt it to be responsive strong acids both solution and solid states. As a result, electron-accepting strength intramolecular charge transfer (ICT) character can controllably enhanced make emission band of sequentially red-shift. The green luminescent solids (524 nm) smoothly transferred into yellow (576 nm), red (640 near infrared (739 emissive...
Abstract Defects at the surface and grain boundaries of metal–halide perovskite films lead to performance losses solar cells (PSCs). Here, organic cyano‐based π‐conjugated molecules composed indacenodithieno[3,2‐b]thiophene (IDTT) are reported it is found that their cyano group can effectively passivate such defects. To achieve a homogeneous distribution, these dissolved in antisolvent, used initiate crystallization. It self‐anchored due strong binding undercoordinated Pb 2+ . On device...
Molecular acceptors are promising alternatives to fullerenes (e.g., PC61/71BM) in the fabrication of high-efficiency bulk-heterojunction (BHJ) solar cells. While solution-processed polymer–fullerene BHJ devices have recently met 10% efficiency threshold, molecular yet prove comparably efficient with polymer donors. At this point time, it is important forge a better understanding design parameters that directly impact small-molecule (SM) acceptor performance In report, we show...
Perovskite solar cells increasingly feature mixed-halide mixed-cation compounds (FA1-x-y MAx Csy PbI3-z Brz ) as photovoltaic absorbers, they enable easier processing and improved stability. Here, the underlying reasons for ease of are revealed. It is found that halide cation engineering leads to a systematic widening anti-solvent window fabrication high-quality films efficient cells. This widens from seconds, in case single cation/halide systems (e.g., MAPbI3 , FAPbI3 FAPbBr3 ), several...
Abstract Ternary organic solar cells (OSCs) represent an efficient and facile strategy to further boost the device performance. However, selection criteria rational design of third guest small molecule (SM) material still remain less understood. In this study, two new SM donor isomers, with α‐chlorinated thiophene (αBTCl) β‐chlorinated (βBTCl) as side chains, are systematically designed, synthesized incorporated a component in PM6:L8‐BO binary blends. It is noticed that introducing donors...
Defect passivation is crucial to enhancing the performance of perovskite solar cells (PSCs). In this study, we successfully synthesized a novel organic compound named DPPO, which consists double phosphonate group. Subsequently, incorporated DPPO into solution. The presence P═O group interacting with undercoordinated Pb2+ yielded film superior crystallinity, greater crystal orientation, and smoother surface. Additionally, addition can passivate defect states enhance upper layer energy level...
Starch, an important carbohydrate with widespread applications in human foods, animal feeds, and many industrial products, is synthesized by plants the action of a complex system involving enzymes. The differing activities these enzymes contribute to variations starch structure among different plant species, botanical organs, genetic backgrounds, thus affect physicochemical properties end-use functions starch. demand for starches particular functional increasing, but ability produce novel...
Small-molecule (SM) donors that can be solution-processed with fullerene acceptors (e.g., PC61/71BM), or their "nonfullerene" counterparts, are proving particularly promising for the realization of high-efficiency bulk-heterojunction (BHJ) solar cells. In several recent studies, solvent vapor annealing (SVA) protocols have been found to yield significant BHJ device efficiency improvements via structural changes in active layer morphologies. However, mechanisms by which morphologies evolve...