연구성과

[SMALL] Highly Functional TNTs with Superb Photocatalytic, Optical, and Electronic Performance Achieving Record PV Efficiency of 10.1% for 1D-Based DSSCs

Different nanostructures of TiO2 play an important role in the photocatalytic and photoelectronic applications. TiO2 nanotubes (TNTs) have received increasing attention for these applications due to their unique physicochemical properties. Focusing on highly functional TNTs (HF-TNTs) for photocataly

  • 2016-10-12 15:27:04

[ACS Applied Materials & Interfaces] A Novel Activated-Charcoal-Doped Multiwalled Carbon Nanotube Hybrid for Quasi-Solid-State Dye-Sensitized Solar Cell Outperforming Pt Electrode

Highly conductive mesoporous carbon structures based on multiwalled carbon nanotubes (MWCNTs) and activated charcoal (AC) were synthesized by an enzymatic dispersion method. The synthesized carbon configuration consists of synchronized structures of highly conductive MWCNT and porous activated charc

  • 2016-10-12 15:18:19

[Journal of Materials Chemistry A] Fabrication of textile fabric counter electrodes using activated charcoal doped multi walled carbon nanotube hybrids for dye sensitized solar cells

Textile fabric electrodes have attained increasing demand as they offer the benefits of light weight, flexibility, and low cost. In this work, we fabricated an activated charcoal doped multi walled carbon nanotube (AC doped MWCNT) hybrid and printed on polyester woven fabric. This carbon fabric comp

  • 2016-10-12 15:10:37

[Scientific Reports] Large Scale Synthesis and Light Emitting Fibers of Tailor-Made Graphene Quantum Dots

Graphene oxide (GO), which is an oxidized form of graphene, has a mixed structure consisting of graphitic crystallites of sp2 hybridized carbon and amorphous regions. In this work, we present a straightforward route for preparing graphene-based quantum dots (GQDs) by extraction of the crystalli

  • 2015-09-23 13:45:03

[Journal of Solid State Chemistry] Exfoliation of titanium oxide powder into nanosheets using hydrothermal reaction and its reassembly into flexible papers for thin-film capacitors

We have discovered a methodology to realize the fabrication of flexible metal oxide film using two-dimensional (2D) nanosheets. Atomic scale titanium oxide (TiOx) nanosheets were exfoliated from bulk TiOx powder that had a layered structure via the modified Sasaki’s method. The vacuum-assisted fil

  • 2015-06-17 00:12:35

[Solar Energy Materials and Solar Cells] Composite multi-functional over layer: A novel design to improve the photovoltaic performance of DSSC

Light scattering in dye-sensitized solar cell (DSSC) plays a vital role in extending the traveling distance by confining light propagation within the photoanode and also promotes interaction of incident photons with the dye molecules. A novel strategy was adopted to improve the performance of DSSC w

  • 2015-06-17 00:07:14

[Physical Chemistry Chemical Physics] Multiwalled carbon nanotube coated polyester fabric as textile based flexible counter electrode for dye sensitized solar cell

Textile wearable electronics offers the combined advantages of both electronics and textile characteristics. The essential properties of these flexible electronics such as lightweight, stretchable, and wearable power sources are in strong demand. Here, we have developed a facile route to fabricate m

  • 2015-06-17 00:02:18

[Carbon] The thermotropic liquid crystalline behavior of mesophase pitches with different chemical structures

Chemical structure-dependent liquid crystalline behaviors of two commercial mesophase pitches, M-AR and T-MP, which are synthesized with different raw materials of naphthalene and coal tar, respectively, were comparatively examined. The NMR analysis together with preparation procedure enabled us to

  • 2015-06-16 22:43:18

[Journal of Alloys and Compounds] Intense pulsed light-assisted facile and agile fabrication of cobalt oxide/nickel cobaltite nanoflakes on nickel-foam for high performance supercapacitor applications

We report an extremely efficient method for fabricating high-performance supercapacitive CoO/NiCo2O4nanoflakes on Ni-foam substrate by using intense pulsed light (IPL) technology. Structural and morphological characterization is carried out using X-ray diffraction (XRD) and scanning and transmission

  • 2015-06-16 22:38:19

[ACS Applied Materials&Interfaces] RTA-Treated Carbon Fiber/Copper Core/Shell Hybrid for Thermally Conductive Composites

In this paper, we demonstrate a facile route to produce epoxy/carbon fiber composites providing continuous heat conduction pathway of Cu with a high degree of crystal perfection via electroplating, followed by rapid thermal annealing (RTA) treatment and compression molding. Copper shells on carbon f

  • 2015-06-16 22:32:13

[Journal of Composite Materials] Improvement in the adhesion of bamboo fiber reinforced polylactide composites

Polylactide composites containing bamboo fiber treated with various coupling agents were prepared using melt compounding. 3aminopropyltriethoxysilane, vinyltrimethoxysilane, maleic anhydride, and acrylic acid were used as the coupling agents to improve the mechanical properties of polylactide and ba

  • 2015-06-16 22:27:18

[Journal of The Textile Institute] Effect of elastane linear density and draft ratio on the physical and mechanical properties of core-spun cotton yarns

The aim of this study was to investigate the effect of elastane linear density and draft ratio on the physical and mechanical properties of core-spun yarns. Twenty yarn samples were prepared on industrial scale in a spinning mill with two different yarn linear densities, each with different two elas

  • 2015-06-16 22:14:00

[Chemical Communications]Nitrogen-doped carbon nanotubes and graphene composite structures for energy and catalytic applications

Substitutional heteroatom doping is a promising route to modulate the outstanding material properties of carbon nanotubes and graphene for customized applications. Recently, (nitrogen-) N-doping has been introduced to ensure tunable work-function, enhanced n-type carrier concentration, diminished su

  • 2015-06-16 22:06:45

[Polymer] Solubility parameter-based analysis of polyacrylonitrile solutions in N,N-dimethyl formamide and dimethyl sulfoxide

The physical properties of the solutions of polyacrylonitrile (PAN) in N,N-dimethyl formamide (DMF) and dimethyl sulfoxide (DMSO) were characterized in terms of solubility parameter. The physical properties were largely determined by individual solubility parameters, particularly the polar term, rat

  • 2015-06-16 21:49:22

[Carbon] Preparation of carbon fibers with excellent mechanical properties from isotropic pitches

A novel isotropic pitch composed of linear methylene chains of polycondensed aromatic molecules was synthesized from naphtha-cracked oil through bromination and subsequent dehydrobromination (NB). Isotropic pitch-based carbon fiber obtained from the prepared NB yielded an unprecedentedly high tensil

  • 2015-06-16 21:38:00