A5053031230- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- ZnO doping and properties
- TiO2 Photocatalysis and Solar Cells
- Gas Sensing Nanomaterials and Sensors
- Electrocatalysts for Energy Conversion
- Iron oxide chemistry and applications
- Quantum Dots Synthesis And Properties
- Electronic and Structural Properties of Oxides
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Advanced battery technologies research
- Organic Light-Emitting Diodes Research
- Chalcogenide Semiconductor Thin Films
- Thin-Film Transistor Technologies
- Perovskite Materials and Applications
- Advanced Sensor and Energy Harvesting Materials
- Catalytic Processes in Materials Science
- Fuel Cells and Related Materials
- Semiconductor materials and devices
- Supercapacitor Materials and Fabrication
- Luminescence Properties of Advanced Materials
- 2D Materials and Applications
- Ga2O3 and related materials
- Advancements in Battery Materials
Stanford University
2016-2025
Material Sciences (United States)
2020
Stanford Medicine
2018-2019
Korea Research Institute of Chemical Technology
2014-2019
Daejeon University
2016
Government of the Republic of Korea
2016
Seoul National University
2008-2015
University of Seoul
2014-2015
Yamagata University
2014
Dongguk University
2013
Abstract Recently, sulfur (S)-vacancies created on the basal plane of 2 H -molybdenum disulfide (MoS ) using argon plasma exposure exhibited higher intrinsic activity for electrochemical hydrogen evolution reaction than edge sites and metallic 1 T -phase MoS catalysts. However, a more industrially viable alternative to desulfurization process is needed. In this work, we introduce scalable route towards generating S-vacancies desulfurization. Even though atoms are known be stable inert, find...
Significance Water is considered to be a stable and relatively inert molecule in bulk solution. We report an exceptional behavior of water: molecules are spontaneously oxidized form hydrogen peroxide near the water−air interface micron-sized water droplets. This process does not require any chemical reagent, catalyst, applied electric potential, or radiation. Only pure microdroplets air necessary for appearance peroxide. suggest that this discovery opens various innovative opportunities...
A BiVO<sub>4</sub> with a preferred [001] orientation and exposed {001} facets were grown epitaxially on FTO <italic>via</italic> laser ablation, achieving the state-of-the-art photoelectrochemical performance for solar water-oxidation.
Large-area polymer FET arrays and integrated circuits (ICs) are successfully demonstrated via a simple wire-bar–coating process. Both highly crystalline conjugated layer very smooth insulating formed by consecutive process on 4-inch plastic substrate with short processing time for application as the active dielectric layers of OFET ICs. As service to our authors readers, this journal provides supporting information supplied authors. Such materials peer reviewed may be re-organized online...
Significance Water molecules in bulk liquid are stable and inert under ambient conditions. In sharp contrast, we show that the condensation of water vapor air to form microdroplets on cold surfaces causes formation hydrogen peroxide (H 2 O ) which suggest is promoted by large, intrinsic electric field at air–water interface. This finding provides an alternative pathway for production atmospheric H , example, raindrops as well fogs mists. easy means naturally producing suggests many...
A Nb-doped TiO2 (NTO) thin film was deposited on a fluorine-doped tin oxide (FTO) electrode by pulsed laser deposition (PLD) and its application as new compact layer material for dye-sensitized solar cells (DSSCs) investigated. On the basis of investigation dark current, open circuit voltage (Voc) decay, current−voltage (I−V) characteristics, electrochemical impedance spectra (EIS), it found that NTO functioned both blocking an ancillary transparent conducting (TCO) layer. As layer,...
For a hematite (α‐Fe 2 O 3 ) photoanode, multiple electron/hole recombination pathways occurring in the bulk, interfaces, and surfaces largely limit its low‐bias performance (low photocurrent density at potential) for photoelectrochemical water splitting. Here, facile rapid three‐step approach is reported to simultaneously reduce these recombinations nanorods (NRs) array leading greatly improved low bias potential. First, flame‐doping enables high concentration of Ti doping without hampering...
The realization of efficient photoelectrochemical (PEC) water splitting requires effective integration earth-abundant active oxygen evolution catalysts (OECs) with diverse photoanodes. Although many good OECs have been investigated on conductive substrates under dark conditions, further studies are needed to evaluate their performance when integrated photoanodes illumination. Such will be facilitated by developing coating methods onto Here, we report a one-step hydrothermal process that...
Abstract Plasmonic metal nanostructures have been extensively investigated to improve the performance of oxide photoanodes for photoelectrochemical (PEC) solar water splitting cells. Most these studies focused on effects those enhancing light absorption and enabling direct energy transfer via hot electrons. However, several recent shown that plasmonic can PEC another mechanism known as plasmon‐induced resonant (PIRET). this PIRET effect has not yet tested molybdenum‐doped bismuth vanadium...
Graphene-based carbon nanostructures with nanometer dimensions have been of great interest due to the existence a bandgap. So far, well-ordered edge structure and uniformly synthesized graphene quantum dots (GQDs) hexagonal single-crystalline not directly observed owing limited precision current synthesis approaches. Herein, we report on novel approach just for size-controlled GQDs shape but also new discovery constructing 2D 3D single crystal structures from d-glucose via catalytic solution...
We report here the development of high-performance p- and n-channel organic field-effect transistors (OFETs) complementary circuits using inkjet-printed semiconducting layers high-k polymer dielectric blends poly(vinylidenefluoride-trifluoroethylene) (P(VDF-TrFE)) poly(methyl methacrylate) (PMMA). Inkjet-printed p-type semiconductors containing alkyl-substituted thienylenevinylene (TV) dodecylthiophene (PC12TV12T) n-type...
A tree-like nanoporous tungsten trioxide (WO<sub>3</sub>) photoanode that largely improves the photoelectrochemical water-oxidation performance was synthesized by a laser ablation method.
Solution-processable hole-transporting layers (HTLs) capable of cross-linking are especially important in solution-processed organic light-emitting diodes (OLEDs) to achieve multilayer structures with separated charge-transporting and emitting layers. In this work, we report the first example photo cross-linked HTL adopting "thiol–ene" reaction. A new allyl-containing polymer, Allyl-TFB, has been synthesized characterized by NMR, TGA, DSC, UV-vis spectroscopy, cyclic voltammetry, etc. The...
Abstract N‐type metal oxides such as hematite (α‐Fe 2 O 3 ) and bismuth vanadate (BiVO 4 are promising candidate materials for efficient photoelectrochemical water splitting; however, their short minority carrier diffusion length restricted lifetime result in undesired rapid charge recombination. Herein, a 2D arranged globular Au nanosphere (NS) monolayer array with highly ordered hexagonal hole pattern (hereafter, array) is introduced onto the surface of photoanodes comprised oxide films...
This work describes the effect of solvents used for solvothermal reactions to synthesize quaternary copper–iron–tin sulfide (Cu 2 FeSnS 4 ) nanosheets that can serve as a potential alternative divergent energy conversion device applications.
Additional experimental evidence was provided to demonstrate the growth of [001]-textured BiVO 4 on polycrystalline substrates.
In this study, we present a thermally stable multilayered transparent conducting oxide (TCO) functionalized for dye-sensitized solar cells (DSSCs). Nb-doped TiO2 (NTO) layers deposited on conventional Sn-doped In2O3 (ITO) substrates using pulsed laser deposition (PLD) enhanced the optical-to-electrical conversion efficiency of DSSCs by as much 17% compared to that bare ITO-based DSSCs. The electrical properties and J−V characteristics NTO/ITO films showed improved cell performance was due...