Journal of Powder Materials

Article

[Korean]
The Preparation of Dye-Sensitized Solar Cell Paste Used the Peroxo Titanium Complex and Characteristics by Annealing Temperature: Hyunsu Park, Soyeong Joo, Joon-Phil Choi, Woo-Byoung Kim; J Korean Powder Metall Inst. 2015;22(6):396-402. Published online December 1, 2015; DOI: https://doi.org/10.4150/KPMI.2015.22.6.396

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The organic binder-free paste for dye-sensitized solar cell (DSSC) has been investigated using peroxo titanium complex. The crystal structure of TiO₂ nanoparticles, morphology of TiO₂ film and electrical properties are analyzed by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Electrochemical Impedance Spectra (EIS), and solar simulator. The synthesized TiO₂ nanopowders by the peroxo titanium complex at 150, 300, 400°C, and 450°C have anatase phase and average crystal sizes are calculated to be 4.2, 13.7, 16.9, and 20.9 nm, respectively. The DSSC prepared by the peroxo titanium complex binder have higher V_oc and lower J_sc values than that of the organic binder. It can be attributed to improvement of sintering properties of TCO/TiO₂ and TiO₂/TiO₂ interface and to formation of agglomerate by the nanoparticles. As a result, we have investigated the organic binder-free paste and 3.178% conversion efficiency of the DSSC at 450°C.

Citations

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Development of Eco-Friendly Ag Embedded Peroxo Titanium Complex Solution Based Thin Film and Electrical Behaviors of Resistive Random Access Memory
Won Jin Kim, Jinho Lee, Ryun Na Kim, Donghee Lee, Woo-Byoung Kim
Korean Journal of Materials Research.2024; 34(3): 152. CrossRef
Development of eco-friendly thin film manufacturing process using poeroxo titanium complex solution and potential for resistive random access memory
Jinho Lee, Ryun Na Kim, Kee-Ryung Park, Woo-Byoung Kim
Applied Surface Science.2021; 562: 150170. CrossRef
Preparation of ultra-thin TiO2 shell by peroxo titanium complex (PTC) solution-based green surface modification, and photocatalytic activity of homo-core/shell TiO2
Jinho Lee, Jiyong Hwang, Hyunsu Park, Tohru Sekino, Woo-Byoung Kim
Applied Surface Science.2021; 540: 148399. CrossRef
Effects of Annealing Temperature on the Crystal Structure, Morphology, and Optical Properties of Peroxo-Titanate Nanotubes Prepared by Peroxo-Titanium Complex Ion
Hyunsu Park, Tomoyo Goto, Sunghun Cho, Soo Wohn Lee, Masato Kakihana, Tohru Sekino
Nanomaterials.2020; 10(7): 1331. CrossRef
Study on thermal behavior of Ammonium Hexafluofide Titanate for Synthesis of TiO2 Powders
Duk-Hee Lee, Jae-Ryang Park, Chan-Gi Lee, Kyung-Soo Park, Hyeon-Mo Kim
Journal of Korean Powder Metallurgy Institute.2016; 23(5): 353. CrossRef

[English]
Microstructural Feature of Full-densified W-Cu Nanocomposites Containing Low Cu Content: Jai-Sung Lee, Sung-Soo Jung, Joon-Phil Choi, Geon-Yong Lee; J Korean Powder Metall Inst. 2013;20(2):138-141.; DOI: https://doi.org/10.4150/KPMI.2013.20.2.138

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The microstructure evolution during sintering of the W-5 wt.%Cu nanocomposite powders was investigated for the purpose of developing a high density W-Cu alloy. The W-5 wt.%Cu nanopowder compact, fully-densified during sintering at 1623 K, revealed a homogeneous microstructure that consists of high contiguity structures of W-W grains and an interconnected Cu phase located along the edges of the W grains. The Vickers hardness of the sintered W-5 wt.%Cu specimen was 427pm22 Hv much higher than that (276pm19 Hv) of the conventional heavy alloy. This result is mostly due to the higher contiguity microstructure of the W grains compared to the conventional W heavy alloy.

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Evolution of microstructure and wear-friction behavior of W-30 wt.% Cu nanocomposite produced via a mechanochemical synthesis route
K. Zangeneh-madar, H. Abbaszadeh, E. Salahshour-rad, S. Seyyedin, M. Ahangarkani
International Journal of Materials Research.2020; 111(6): 491. CrossRef
In-situ synthesis of tungsten nanoparticle attached spherical tungsten micro-powder by inductively coupled thermal plasma process
Chulwoong Han, Hyunwoong Na, Yonghwan Kim, Hanshin Choi
International Journal of Refractory Metals and Hard Materials.2015; 53: 7. CrossRef

[English]
Consolidation of Iron Nanopowder by Nanopowder-Agglomerate Sintering at Elevated Temperature: Jai-Sung Lee, Joon-Chul Yun, Joon-Phil Choi, Geon-Yong Lee; J Korean Powder Metall Inst. 2013;20(1):1-6.; DOI: https://doi.org/10.4150/KPMI.2013.20.1.001

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The key concept of nanopowder agglomerate sintering (NAS) is to enhance material transport by controlling the powder interface volume of nanopowder agglomerates. Using this concept, we developed a new approach to full density processing for the fabrication of pure iron nanomaterial using Fe nanopowder agglomerates from oxide powders. Full density processing of pure iron nanopowders was introduced in which the powder interface volume is manipulated in order to control the densification process and its corresponding microstructures. The full density sintering behavior of Fe nanopowders optimally size-controlled by wet-milling treatment was discussed in terms of densification process and microstructures.

Citations

Citations to this article as recorded by

Influence of the initial powder characteristic on the densified tungsten microstructure by spark plasma sintering and hot isostatic pressing
Ji Young Kim, Eui Seon Lee, Youn Ji Heo, Young-In Lee, Jongmin Byun, Sung-Tag Oh
Powder Metallurgy.2023; 66(5): 644. CrossRef
Sintering behavior of bimodal iron nanopowder agglomerates
Jun‐ll Song, Geon‐Yong Lee, Eui‐Jin Hong, Carolline S. Lee, Jai‐Sung Lee
Journal of the American Ceramic Society.2019; 102(6): 3791. CrossRef
Fabrication of YAG : Er3+powders for the single crystal growth according to the synthetic temperature and flux concentration
Cheol Woo Park, Suk Hyun Kang, Jae Hwa Park, Hyun Mi Kim, Jae Sang Choi, Hyo Sang Kang, Kwang Bo Shim
Journal of the Korean Crystal Growth and Crystal Technology.2015; 25(4): 166. CrossRef
Consolidation of Hierarchy-Structured Nanopowder Agglomerates and Its Application to Net-Shaping Nanopowder Materials
Jai-Sung Lee, Joon-Phil Choi, Geon-Yong Lee
Materials.2013; 6(9): 4046. CrossRef

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