Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Hee-Woong Lee"'
Autor:
Jae Ki Lee, Min-Wook Oh, Byungki Ryu, Ji Eun Lee, Bong-Seo Kim, Bok-Ki Min, Sung-Jae Joo, Hee-Woong Lee, Su-Dong Park
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Abstract We report the enhanced thermoelectric properties of Ce-doped AgSbTe2 (AgSb1−xCexTe2) compounds. As the Ce contents increased, the proportion of heterophase Ag2Te in the AgSbTe2 gradually decreased, along with the size of the crystals. The
Externí odkaz:
https://doaj.org/article/cbc70153314e41f8a746ac35c10a35a3
Autor:
Bok-Ki Min, Sung-Jae Joo, Jeongin Jang, Ho Seong Lee, Ji Eun Lee, Byungki Ryu, Hee-Woong Lee, Bong-Seo Kim, Su-Dong Park
Publikováno v:
Journal of Alloys and Compounds. 739:129-138
In order to achieve enhancements in thermoelectric efficiency, microstructures that can form numerous interfaces have been investigated intensively for controlling the transport of charge carriers and heat-carrying phonons. In this paper, we report t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77a080d03e20f8e16cb92a5265b42762
https://doi.org/10.1016/j.jallcom.2017.12.203
https://doi.org/10.1016/j.jallcom.2017.12.203
Autor:
Bok-Ki Min, Ji-Hee Son, Ji Eun Lee, Bong-Seo Kim, Hee-Woong Lee, Byungki Ryu, Sung-Jae Joo, Su-Dong Park
Publikováno v:
Journal of the Korean Physical Society. 69:1314-1320
Bi2Te2.7Se0.3 bulk materials containing x vol% MgO nanoparticles (average particle size ≈ 100 nm, x = 0, 0.5, 1.0, 1.5) were synthesized by using high-energy ball milling and plasma- activated sintering (PAS) without any special process for nanopar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08747a87f80192713240b7e3dfa866e8
https://doi.org/10.3938/jkps.69.1314
https://doi.org/10.3938/jkps.69.1314
Publikováno v:
Journal of Electronic Materials. 45:3453-3459
Miniature thermoelectric modules (TEMs) are required for micro power generation as well as local cooling, and they should have small size and high performance. However, conventional bulk TEMs generally have in-plane dimensions of a few centimeters, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e4b42652057cf6238458e26e6242034
https://doi.org/10.1007/s11664-016-4560-z
https://doi.org/10.1007/s11664-016-4560-z
Autor:
Byungki Ryu, Ji Eun Lee, Sung-Jae Joo, Su-Dong Park, Young-Rae Cho, Hyun Gu Kim, Bok-Ki Min, Jae Ki Lee, Bong-Seo Kim, Hee-Woong Lee
Publikováno v:
Electronic Materials Letters. 12:290-295
We found that Na is a good source to develop twin structures in the Bi-Te system, such as Ag as noted in a previous study. The twin boundaries had a considerable influence on reductions of the lattice thermal conductivity due to phonon scattering by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9685a4da7f0c590cfcf206dfa1405fe7
https://doi.org/10.1007/s13391-015-5390-5
https://doi.org/10.1007/s13391-015-5390-5
Autor:
Ji Eun Lee, Bok-Ki Min, Bong-Seo Kim, Min-Wook Oh, Byungki Ryu, Sung-Jae Joo, Hee-Woong Lee, Su-Dong Park
Publikováno v:
Journal of the Korean Physical Society. 68:115-120
Density functional calculations are performed to study the band structures of Bi2Te3-related binary (Bi2Te3, Sb2Te3, Bi2Se3, and Sb2Se3) and Sb/Se-doped ternary compounds [(Bi1−x Sb x )2Te3 and Bi2(Te1−y Se y )3]. The band gap was found to be inc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3528d76b77a3f6785b93537fbf7f14ff
https://doi.org/10.3938/jkps.68.115
https://doi.org/10.3938/jkps.68.115
Autor:
Bok-Ki Min, Sung-Jae Joo, Su-Dong Park, Ho Seong Lee, Ji Eun Lee, Bong-Seo Kim, Byungki Ryu, Min-Wook Oh, Hee-Woong Lee
Publikováno v:
Journal of the Korean Physical Society. 68:164-169
Ag(Sb1−x La x )Te2 compounds (x = 0, 0.01, 0.02, 0.03, and 0.05) were fabricated to study the effect of La-doping on the thermoelectric properties by using a spark-plasma-sintering process. All specimens were nearly single-phase AgSbTe2 with a smal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::729810abccca3e0cdf412bc7976f7ac9
https://doi.org/10.3938/jkps.68.164
https://doi.org/10.3938/jkps.68.164
Autor:
Byungki Ryu, Min-Wook Oh, Jae Ki Lee, Ji Eun Lee, Sung-Jae Joo, Bong-Seo Kim, Bok-Ki Min, Hee-Woong Lee, and Su-Dong Park
Publikováno v:
Journal of Applied Physics; 2015, Vol. 118 Issue 1, p1-6, 6p, 4 Graphs
Autor:
Bong Seo Kim, Bok-Ki Min, Hee Woong Lee, Su Dong Park, Min-Wook Oh, Byungki Ryu, Ji Eun Lee, Sung-Jae Joo
Publikováno v:
Journal of Nanoscience and Nanotechnology. 15:8299-8304
Bi2Te3 thermoelectric thin films were deposited on the flexible polyimide substrates by RF magnetron co-sputtering of a Bi and a Te targets. The influence of the substrate temperature and RF power on the microstructure, chemical composition, and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19a20e9584a4e72651594dec40f796a7
https://doi.org/10.1166/jnn.2015.11440
https://doi.org/10.1166/jnn.2015.11440
Publikováno v:
Journal of the Korea Institute of Information Security and Cryptology. 25:749-757
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c68641728d4a290fc0582600d208ad3
https://doi.org/10.13089/jkiisc.2015.25.4.749
https://doi.org/10.13089/jkiisc.2015.25.4.749