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2 results on '"Jaesun Song"'

1. Enhancement of Ferroelectric Properties of Superlattice-Based Epitaxial BiFeO3 Thin Films via Substitutional Doping Effect

Author

Byoung Hun Lee, Do Hyun Kim, Hyunji An, Jaesun Song, Taemin Ludvic Kim, Sejun Yoon, Seung-Pyo Hong, Tae Hyung Lee, Kyoung Soon Choi, Soyoung Kim, Ho Won Jang, Chung Wung Bark, Sang Don Bu, Sanghan Lee, Sang Yun Jeong, Cheolho Jeon, Woonbae Sohn, and Sam Yeon Cho

Subjects
Range (particle radiation), Materials science, business.industry, Superlattice, Doping, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Epitaxy, 01 natural sciences, Ferroelectricity, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, General Energy, Optoelectronics, Physical and Theoretical Chemistry, Thin film, 0210 nano-technology, business
Abstract

Although there is considerable interest in BiFeO3 owing to its versatile physical properties, which make it suitable for a wide range of applications, its high leakage current is a significant limi...

Published
2019
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2. Plasmonic Silver Nanoparticle-Impregnated Nanocomposite BiVO4 Photoanode for Plasmon-Enhanced Photocatalytic Water Splitting

Author

Sehun Seo, Jaesun Song, Byung Joon Moon, Hye-Min Shin, Yeong Jae Kim, Sanghan Lee, Seungkyu Kim, Gil Ju Lee, Myung-Han Yoon, Sang Hyun Lee, Yong-Ryun Jo, Sang Yun Jeong, Bong-Joong Kim, Hyunji An, Young Min Song, and Won-June Lee

Subjects
Nanocomposite, Materials science, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Silver nanoparticle, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Dielectric spectroscopy, chemistry.chemical_compound, General Energy, Chemical engineering, chemistry, Bismuth vanadate, Photocatalysis, Physical and Theoretical Chemistry, 0210 nano-technology, Plasmon, Photocatalytic water splitting, Localized surface plasmon
Abstract

Herein, we developed a fully solution-deposited nanocomposite photoanode based on silver nanoparticle (NP)-impregnated bismuth vanadate (BiVO4) films. The synthesized Ag NPs exhibit diameters of few nanometers and uniform matrix dispersion, which were confirmed by high-resolution transmission electron microscopy. The photoanode composed of the Ag NP-incorporated nanocomposite BiVO4 showed a remarkable enhancement in both low potential and the saturated photocatalytic current densities in comparison with the pristine BiVO4 film. The observed experimental results are attributed to the improved carrier generation and enhanced charge separation by the localized surface plasmon resonance-mediated effect as suggested by electrochemical impedance spectroscopy and a numerical simulation.

Published
2018
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