A5002665150- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Advanced Nanomaterials in Catalysis
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Chalcogenide Semiconductor Thin Films
- solar cell performance optimization
- Organic Light-Emitting Diodes Research
- Axial and Atropisomeric Chirality Synthesis
- Solid-state spectroscopy and crystallography
- Molecular spectroscopy and chirality
- Industrial Gas Emission Control
- Magnesium Oxide Properties and Applications
- Methane Hydrates and Related Phenomena
- Synthesis and Properties of Aromatic Compounds
- Hydrocarbon exploration and reservoir analysis
- Nanoplatforms for cancer theranostics
- Minerals Flotation and Separation Techniques
- Semiconductor materials and interfaces
- Thin-Film Transistor Technologies
- Silicon and Solar Cell Technologies
- Copper-based nanomaterials and applications
Newcastle University
2023-2025
École Polytechnique Fédérale de Lausanne
2020-2023
National University of Singapore
2021
East China University of Science and Technology
2015-2020
Moscow State University of Fine Chemical Technologies
2016
Abstract Perovskite solar cells have reached a power conversion efficiency over 25%, and the engineering of interface between perovskite hole transport layer (HTL) has been crucial to achieve high performance. Here we design bifunctional molecule CBz-PAI with carbazole-triphenylamine phenylammonium iodide units passivate defects at perovskite/HTL interface. Owing favourable energy level alignment perovskite, acts as shuttle HTL. This minimizes difference quasi-Fermi splitting or ‘internal’ V...
Developing hole-transporting materials (HTMs) with appropriate molecular configuration and charge mobility is important to improve perovskite solar cell (PSC) photovoltaic performance their feasibility for commercialization. In this work, a novel pyramidal-shaped low-cost HTM coded MeOTTVT prepared through extension of π-conjugation based on triphenylamine core. Carbon–carbon double bonds are introduced between the core p-methoxyl planarity HTM, favoring intermolecular stacking thus...
Photovoltaics (PV) is an attractive candidate for powering the rapidly growing market of smart devices in Internet-of-Things (IoT) such as sensors, actuators, and wearables. Using solar cells rechargeable batteries to power IoT avoids expensive replacement disposable reduces environmental impact. are often operated indoors under artificial light, which differs from (outdoor) sunlight it a much narrower, mainly visible spectrum with typically factor 500–1000 lower intensity. In this work,...
Abstract The fabrication of perovskite solar cells (PSCs) through blade coating is seen as one the most viable paths toward commercialization. However, relative to less scalable spin method, process often results in more defective films with lower grain uniformity. Ion migration, facilitated by those elevated defect levels, main triggers phase segregation and device instability. Here, a bifunctional molecule, p ‐aminobenzoic acid (PABA), which enhances barrier ion induces growth along (100)...
Since the first isolation of 1,3,5,7-tetra-tert-butyl-s-indacene in 1986, core-expanded s- and as-indacenes have attracted intensive interest. However, there is no reported synthesis such type molecules due to their high reactivity for over 30 years. Herein, we report successful two relatively stable, indacene isomers, dicyclopenta[b,g]-naphthalene (5) dicyclopenta[a,f]naphthalene (6). X-ray crystallographic analyses reveal that backbone 5 adopts a bond-delocalized structure, while 6...
Photosensitizers yielding superior photocurrents are crucial for copper-electrolyte-based highly efficient dye-sensitized solar cells (DSCs). Herein, two molecularly tailored organic sensitizers presented, coded ZS4 and ZS5, through judiciously employing dithieno[3,2-b:2″,3″-d]pyrrole (DTP) as the π-linker hexyloxy-substituted diphenylquinoxaline (HPQ) or naphthalene-fused-quinoxaline (NFQ) auxiliary electron-accepting unit, respectively. Endowed with HPQ acceptor, shows more electron...
Abstract Surface defects cause non‐radiative charge recombination and reduce the photovoltaic performance of perovskite solar cells (PSCs), thus effective passivation has become a crucial method for achieving efficient stable devices. Organic ammonium halides have been widely used surface passivation, due to their simple preparation, lattice matching with perovskite, high ability. Herein, passivator 2,4,6‐trimethylbenzenaminium iodide (TMBAI) is employed as interfacial layer between spiro...
Dye-sensitized solar cells (DSSCs) with cobalt electrolytes have gained increasing attention. In this Research Article, two new pyrido[3,4-b]pyrazine-based sensitizers different cores of bulky donors (indoline for DT-1 and triphenylamine DT-2) were designed synthesized a comparative study their photophysical electrochemical properties device performance also analyzed through density functional theory calculations. The results function calculations reveal the limited electronic communication...
The development of novel photosensitizers with very high molar extinction coefficients and broad absorption spectra to enhance the light harvesting efficiency providing PCEs in solid state dye sensitized solar cells (sDSCs) is a main target for improvement.
Three new near-infrared D–A−π–A dyes (S1, S2, and S3) with indeno[1,2-b]thiophene-based strong donor, containing 5,6-difluorobenzo[c][1,2,5]thiadiazole (DFBT), benzo[c][1,2,5]thiadiazole (BT), 2,3-diphenylpyrido[3,4-b]pyrazine (PP) as the auxiliary acceptor, respectively, were synthesized for application of dye-sensitized solar cells. Introduction powerful electron-donating unit indeno[1,2-b]thiophene electron-withdrawing DFBT, BT, PP groups into conjugation bridge can enhance absorption...
Abstract Over the past three decades, dye‐sensitized solar cells ( i. e. Grätzel cells) have evolved from a pioneering concept of molecular photovoltaics to large‐scale industrial deployment. In this review article, we provide historical overview developments with focus on scientific advancements that set stage for technology emerge and thrive. This involves insights into (photo)electrochemistry underlying processes, engineering dyes, redox shuttles, hole‐transporting materials, as well...
Although C 60 is usually the electron transport layer (ETL) in inverted perovskite solar cells, its molecular nature of leads to weak interfaces that lead non-ideal interfacial electronic and mechanical degradation. Here, we synthesized an ionic salt from , 4-(1',5′-dihydro-1'-methyl-2' H -[5,6] fullereno-C - I h -[1,9-c]pyrrol-2'-yl) phenylmethanaminium chloride (CPMAC), used it as shuttle PSCs. The CH 2 -NH 3 + head group CPMA cation improved ETL interface enhanced packing, leading ~3-fold...
Two indoline-based D–A–π–A organic sensitizers with different π-bridges were synthesized for solid-state dye-sensitized solar cells, in which <bold>SH3</bold> showed an efficiency of 5.07% under a thin TiO<sub>2</sub> film layer 1.3 μm.
Heteroaromatic units are commonly used as π-spacers for sensitizers and show significant roles in tuning molecular properties DSSCs performances.
Surface Defect Modifications In article number 2302404, Hongwei Zhu, Zhongjin Shen, Junfeng Wang, Michael Grätzel, and co-workers develop a novel surface passivator as the interfacial layer between perovskite hole transport to modify defect states, yielding greatly improved photovoltaic performance device stability. The study highlights molecular engineering for efficient stable solar cells.
The oxidation rate of magnesium sulfite is important for the application wet magnesia desulfurization, which suitable industrial boilers in china. In this work, without addition homogeneous condition studied, was oxidated bath and temperature constant reactor with injecting nitrogen into upper space to remove air. With adding different concentration sulfite, found be 1.15th order concentration, dissolved oxygen 0.30th rate, also discussed, activation energy 87.36 kJ/mol. Based on experiment...