A5003154466- Perovskite Materials and Applications
- Conducting polymers and applications
- 2D Materials and Applications
- Quantum Dots Synthesis And Properties
- Graphene research and applications
- Organic Electronics and Photovoltaics
- Chalcogenide Semiconductor Thin Films
- Electrocatalysts for Energy Conversion
- MXene and MAX Phase Materials
- Advanced Sensor and Energy Harvesting Materials
- Advanced Photocatalysis Techniques
- Advanced battery technologies research
- Carbon Nanotubes in Composites
- Silicon and Solar Cell Technologies
- Nanowire Synthesis and Applications
- Semiconductor materials and interfaces
- Advanced Memory and Neural Computing
- Hydrogen Storage and Materials
- Silicon Nanostructures and Photoluminescence
- Fuel Cells and Related Materials
- Thermal properties of materials
- Nanomaterials and Printing Technologies
- Hybrid Renewable Energy Systems
- Electrochemical Analysis and Applications
- Thin-Film Transistor Technologies
Korea University
2024-2025
Ulsan National Institute of Science and Technology
2017-2023
Abstract Developing efficient bifunctional catalysts for overall water splitting that are earth-abundant, cost-effective, and durable is of considerable importance from the practical perspective to mitigate issues associated with precious metal-based catalysts. Herein, we introduce a heterostructure comprising perovskite oxides (La 0.5 Sr CoO 3– δ ) molybdenum diselenide (MoSe 2 as an electrochemical catalyst electrolysis. Interestingly, formation La MoSe induces local phase transition in ,...
A vacuum-deposited highly ordered butylammonium-based Ruddlesden–Popper phase perovskite is introduced as a passivation layer for efficient and stable inverted solar cells.
An annealing-free process is considered as a technological advancement for the development of flexible (or wearable) organic electronic devices, which can prevent distortion substrates and damage to active components device simplify overall fabrication increase industrial applications. Owing its outstanding electrical, optical, mechanical properties, graphene seen promising material that could act transparent conductive electrode optoelectronic devices. their high transparency electron...
Metal-based transparent conductive electrodes (TCEs) are attractive candidates for application in indium tin oxide (ITO)-free solar cells due to their excellent electrical conductivity and cost effectiveness. In perovskite (PSCs), metal-induced degradation with the layer leads various detrimental effects, deteriorating device performance stability. Here, we introduce a novel flexible hybrid TCE consisting of Cu grid-embedded polyimide film graphene capping layer, named GCEP, which exhibits...
In water-splitting catalysts, exposing high-activity crystal facets with optimal electronic structures can significantly enhance the oxygen evolution reaction (OER) kinetics. this work, we demonstrate a facile strategy for simultaneously modulating preferential facet and structure of perovskite oxides their use as water-electrolysis catalysts using template-mediated growth approach. Experimental computational analyses revealed that preferred La0.5Sr0.5CoO3 (LSC) grown on MoReS2 was...
Non-layered 2D materials offer unique and more advantageous physicochemical properties than those of conventional layered materials. However, the isotropic chemical bonding nature non-layered hinders their lateral growth, making synthesis large-area continuous thin films challenging. Herein, a facile kinetically tailored vapor deposition (KT-CVD) approach is introduced for molybdenum nitride (MoN), representative material. Large-scale MoN with dimensions up to 1.5 cm × are obtained by...
Abstract As perovskite solar cells (PSCs) require higher standards for commercial applications, all vacuum‐processed PSCs should become a key in future manufacturing processes of scalable compared to their currently dominating research types based on solution processes. In fact, vacuum deposition high‐quality organic hole‐transport layers (HTLs) is crucial successful fabrication PSCs. Here, the study develops triarylamine‐based single oligomer (TAA‐tetramer)−a miniaturized‐molecular form...
Transition metal dichalcogenides (TMDs), due to their fascinating properties, have emerged as potential next-generation semiconducting nanomaterials across diverse fields of applications. When combined with other material systems, precise control the intrinsic properties TMDs plays a vital role in maximizing performance. Defect-induced atomic doping through introduction chalcogen vacancy into lattices is known be promising strategy for modulating characteristic properties. As result, there...
Flexible semitransparent perovskite solar cells (ST-PSCs) have great potential for use in high-density energy systems, such as building or vehicle integrated photovoltaics, considering the features of PSC devices, including high performance, light weight, thin-film processability, and near-infrared transmittance. Despite numerous efforts toward achieving efficiency flexibility ST-PSCs, realization high-performance operational stability ST-PSCs still require further development. Herein, we...
Direct seawater electrolysis technology for sustainable hydrogen production has garnered significant attention, owing to its abundant resource supply and economic potential. However, the complex composition high chloride concentration of have hindered practical implementation. In this study, we report an in situ-synthesized dual-phase electrocatalyst (HPS–NiMo), comprising amorphous phosphide protective outer phase a crystalline alloy inner with supplementary sulfur active sites, improve...
Owing to its mass-production capability and simple process, liquid-phase exfoliation (LPE) of layered bulk materials is commonly used for synthesizing two-dimensional materials, such as graphene or transition metal dichalcogenides (TMDs). Surfactants are often in LPE process improve the efficiency dispersion stability target materials. However, during surfactant-mediated as-applied surfactant typically forms strong covalent/noncovalent bonds with thereby deteriorating properties starting...
The chemical vapor deposition (CVD) technique has become one of the most widely used methods in synthesis/study graphene owing to its capability large-area and uniform synthesis with great potential mass production. It is also well-known that single-layer can be grown on copper-based catalytic substrates due low carbon solubility. However, few-layer patches are typically generated at grain boundaries or defect sites metal substrate, which lowers overall qualities film. Various factors, often...
Organic solar cells fabricated with Cu grid/graphene hybrid transparent electrodes exhibit both excellent device performance and long-term stability.
Developing scalable technologies in perovskite solar cells (PSCs), including the deposition of uniform photoactive layers and charge transport layers, is critical for successfully migrating recently developed advances PSC community toward industrialization. Herein, efficient stable large‐area PSCs using vacuum‐deposited fluorinated analogue Spiro‐OMeTAD (Spiro‐ m F) methylammonium lead iodide (MAPbI 3 ) as hole absorber respectively, are demonstrated. The Spiro‐ F exhibits improved...
The demand for high-efficiency flexible optoelectronic devices is ever-increasing because next-generation electronic that comprise portable or wearable systems are set to play an important role. Graphene has received extensive attention as it considered be a promising candidate material transparent electrode platforms owing its outstanding electrical, optical, and physical properties. Despite these properties, the inert hydrophobic nature of graphene surfaces renders difficult use in...
Abstract In perovskite photovoltaic cells having a p‐i‐n structure, the hole transport layer (HTL) plays an important role in device performance because it has direct impact on crystallinity of overlying films as well interfacial charge transport. Poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT : PSS) been widely used HTL owing to its desirable electrical and optical properties with solution processability. However, improving functionality PEDOT PSS still requires broad...
As an effective strategy to achieve high performance and operational stability in perovskite solar cells (PSCs), numerous studies have been conducted develop efficient charge transporting materials that possess desirable conductivity, carrier mobility, stability. Among the great number of candidate materials, graphene has attracted significant attention owing its remarkable optoelectrical properties Based on these advantages, this study, a graphene-assisted electron transport layer (ETL) was...
The effect of the graphene integration process on performance graphene/silicon-based Schottky junction solar cells is investigated.
Transition metal dichalcogenides (TMDs) have received significant attention because of their potential for replacing or modifying the existing charge transporting materials in organic solar cells (OSCs) with unique crystalline structure and desirable electrical properties. Poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) has been considered as representative hole material owing to its notable optical transmittance, conductivity, solution-processability. In this study, we...
Significant research efforts are currently being devoted to improving both the crystalline quality and stability of lead halide perovskite absorbers advance commercial prospects perovskite-based solar cells. Herein, we report a simple one-step dibutylhydroxytoluene (BHT) additive-based approach for simultaneously crystallinity resistance films under adverse degradation conditions. We found that BHT, commonly known its antioxidant properties, can considerably improve performance...
Abstract Although intensive research for graphene oxide (GO) has been conducted, the broad size distribution of as‐synthesized GO flakes still remains a challenging issue since flake direct impact on material properties and related applications. Herein, we propose facile scalable approach fractionation by manipulating surface charge with an organic solvent‐mediated aqueous solution. Both experimental simulation results confirm that dispersion is notably influenced bond strength solvent,...