A5068533014- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Solid-state spectroscopy and crystallography
- Advancements in Battery Materials
- Supercapacitor Materials and Fabrication
- Organic Light-Emitting Diodes Research
- Advanced Nanomaterials in Catalysis
- Electrochemical sensors and biosensors
- Topological Materials and Phenomena
- 2D Materials and Applications
- Interconnection Networks and Systems
- Polyoxometalates: Synthesis and Applications
- Advancements in Semiconductor Devices and Circuit Design
- Semiconductor materials and devices
- Catalytic Processes in Materials Science
- Graphene research and applications
- Advanced battery technologies research
- Organic and Molecular Conductors Research
National Taiwan University of Science and Technology
2024
National Tsing Hua University
2010-2022
École Polytechnique Fédérale de Lausanne
2020-2022
Boston University
2016
The use of molecular modulators to reduce the defect density at surface and grain boundaries perovskite materials has been demonstrated be an effective approach enhance photovoltaic performance device stability solar cells. Herein, we employ crown ethers modulate films, affording passivation undercoordinated defects. This interaction elucidated by solid-state nuclear magnetic resonance functional theory calculations. ether hosts induce formation host-guest complexes on which reduces...
Cost management and toxic waste generation are two key issues that must be addressed before the commercialization of perovskite optoelectronic devices. We report a groundbreaking strategy for eco-friendly cost-effective fabrication highly efficient solar cells. This involves usage high volatility co-solvent, which dilutes precursors to lower concentration (<0.5 M) while retaining similar film quality device performance as (>1.4 solution. More than 70% material cost can reduced. Mechanistic...
Abstract In this study, the electrodeposition (ED) of ultrathin, compact TiO 2 blocking layers (BLs) on fluorine-doped tin oxide (FTO) glass for perovskite solar cells (PSCs) is evaluated. This bottom-up method allows controlling morphology and thickness films by simply manipulating deposition conditions. Compared with BLs produced using spin-coating (SC) method, ED exhibit satisfactory surface coverage, even a film 29 nm. Evidence from cyclic voltammetry shows that an BL suppresses...
Abstract Formamidinium lead iodide perovskites are promising light-harvesting materials, yet stabilizing them under operating conditions without compromising optimal optoelectronic properties remains challenging. We report a multimodal host–guest complexation strategy to overcome this challenge using crown ether, dibenzo-21-crown-7, which acts as vehicle that assembles at the interface and delivers Cs + ions into interior while modulating material. This provides local gradient of doping...
Crystal morphology and structure are important for improving the organic–inorganic lead halide perovskite semiconductor property in optoelectronic, electronic, photovoltaic devices. In particular, crystal growth dissolution two major phenomena determining of methylammonium iodide sequential deposition method fabricating a solar cell. this report, effect immersion time second step, i.e., methlyammonium morphological, structural, optical, evolution, is extensively investigated. Supported by...
Cuprous thiocyanate (CuSCN) is a promising inorganic hole-transporting material for perovskite solar cell (PSC) applications due to its robust thermal stability and high hole mobility. However, challenges arise from the use of polar sulfide solvents, such as diethyl (DES), during CuSCN film deposition. The DES residue in solution-processed adversely affects layer, leading compromised perovskite/CuSCN interface contact thereby impacting photovoltaic performance long-term CuSCN-based PSCs....
Abstract Spiro-OMeTAD with symmetric spiro-bifluorene unit has dominated the investigation of hole-transporting material (HTM) for efficient perovskite solar cells (PSCs) despite its low intrinsic hole conductivity and instability. In this study, we designed synthesized three asymmetric spiro-phenylpyrazole/fluorene base HTMs, namely: WY-1, WY-2 WY-3. They exhibit excellent electrochemical properties conductivities. Moreover, PSC based on WY-1 exhibits highest power conversion efficiency...
The topological crystalline insulator tin telluride is known to host superconductivity when doped with indium (Sn$_{1-x}$In$_{x}$Te), and for low contents ($x=0.04$) it that the surface states are preserved. Here we present growth, characterization angle resolved photoemission spectroscopy analysis of samples much heavier In doping (up $x\approx0.4$), a regime where superconducting temperature increased nearly fourfold. We demonstrate despite strong p-type doping, Dirac-like persist.
Recent research on fabricating scaffold‐type perovskite solar cells plastic substrates has reported noteworthy progress in replacing the high‐temperature processing of TiO 2 scaffolds and compact layers with various low‐temperature processes. Herein, recent laboratory is regarding development electrodeposited x brookite scaffolds, both which can be processed under 150 °C without greatly sacrificing their photovoltaic performance. Through systematic characterization device properties careful...
Abstract Among the various inorganic hole‐transporting materials for perovskite solar cells (PSCs), CuSCN is identified as a promising candidate commercialization applications owing to its abundance and solution processability with alkyl sulfides. Although possesses high intrinsic thermal stability, existence of diethyl sulfide (DES) residue during wet processing films accelerates degradation, impeding practical application in PSC applications. This study demonstrates new...
Sn‐doped TiO 2 films are successfully co‐electrodeposited from a single bath containing TiCl 3 and SnCl , providing new facile method for the preparation of metal‐doped thin films. Through systematic examinations on film morphologies, optical, electronic properties electrodeposited with different Sn‐doping amount, it is utilized as electron‐transporting layer (ETL) in perovskite solar cell (PSC). The photovoltaic performance PSCs equipped ETL improved considerably, which mainly attributed to...
A quality compact layer (CL) with a thin and pinhole‐free structure is essential for an efficient perovskite solar cell (PSC). This study offers new perspective regarding criterion of CL, namely three‐dimensional interfacial contact. In examination the deposition mechanisms, film morphologies, optical electronic properties CLs fabricated using different methods, electrodeposited (ED) TiO 2 CL outperformed other CLs. not only because its ultrathin, fully covered morphology but also mossy...
This study introduces a robust method to separate organic and inorganic parts in perovskite films. It pioneers UV-Vis measurement detect stoichiometric differences between precursor solutions films, showing mismatch chemical composition.
Methylamine (MA 0 ) gas treatment (MATM) is a process that involves the adsorption of MA on methylammonium (MA)‐based lead perovskite thin films, forming an intermediate, which appears as visually transparent liquid. When desorbed from this recrystallization MA‐based occurs. Due to highly reversible nature MATM and its ability inherently levelize film surface through liquefaction, promising method for fabricating uniform intact films over large areas, crucial commercialization solar cells....
A series of spiro‐arranged hole‐transporting materials are designed and synthesized by incorporating a substituted phenylpyrazole unit to the orthogonal dibenzosuberene core unit, which named as THY‐1 THY‐5. All them exhibit good optical, electrochemical, electronic properties needed for HTMs, despite distinctive morphologies observed spin‐casted thin film. perovskite solar cell based on THY‐5 exhibits highest power conversion efficiency 15.83%, is comparable that...
One‐step and two‐step methods are regarded as the main solution processes for preparing organic metal halide perovskite (PVSK) films. Both of them also reported to produce high‐quality PVSK films high‐performance devices. Herein, two highly efficient solar cells (PSCs) made by one‐step (19.91%) (20.63%) analyzed in detail. Particularly, nucleation mechanism structural characteristics from different systematically discussed. Characterizations field‐emission scanning electron microscopy...
Toxic substance usage remains one of the major concerns that must be addressed toward commercialization perovskite photovoltaics. Herein, we report a highly efficient solar module (>13%) fabricated via wet process uses unique aqueous Pb(NO3)2 precursor, eliminating use toxic organic solvents during film preparation. In addition, demonstrate pattern in monolithically interconnected structure to check uniformity and quality laser scribing. Finally, highlight this precursor protocol could...