Zobrazeno 1 - 10
of 318
pro vyhledávání: '"Jung-Hyuk Koh"'
Autor:
Guoxiu Zhang, Lars Rebohle, Fabian Ganss, Wojciech Dawidowski, Elzbieta Guziewicz, Jung-Hyuk Koh, Manfred Helm, Shengqiang Zhou, Yufei Liu, Slawomir Prucnal
Publikováno v:
Nanomaterials, Vol 14, Iss 13, p 1069 (2024)
Zinc oxide (ZnO) is a wide bandgap semiconductor that holds significant potential for various applications. However, most of the native point defects in ZnO like Zn interstitials typically cause an n-type conductivity. Consequently, achieving p-type
Externí odkaz:
https://doaj.org/article/3c2a3f0f16d74c70b98fe2aed863252f
Autor:
Lee Gwangseop, Jung-Hyuk Koh
Publikováno v:
Journal of Asian Ceramic Societies, Vol 11, Iss 1, Pp 138-145 (2023)
ABSTRACTIn this study, lead-free 0.8(Bi,Na)TiO3-0.2(Sr,Ti)O3 piezoelectric ceramics were prepared using a two-step sintering process to analyze their sintering mechanisms. Two-step sintering process has benefits of being able to be conducted at lower
Externí odkaz:
https://doaj.org/article/cab88883c7f44ab582db2368ba7b23b6
Publikováno v:
Journal of Asian Ceramic Societies, Vol 11, Iss 1, Pp 68-79 (2023)
ABSTRACTOwing to its wide bandgap (3.4 eV) and high electron mobility, GaN has attracted significant attention for applications in solar cells, power transistors, and high-electron-mobility transistors. Crystallized GaN thin film can be hardly prepar
Externí odkaz:
https://doaj.org/article/9cda204bd30644a5adb722bcf00dad10
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract In this study, piezoelectric composite nanofiber films were fabricated by introducing nitrogen-doped-reduced-graphene-oxide as a conductive material to a P(VDF-TrFE) polymer and a BiScO3–PbTiO3 ceramic composite employing an electrospinnin
Externí odkaz:
https://doaj.org/article/4c4a0442b63a4debad993f4170d49320
Publikováno v:
IEEE Journal of the Electron Devices Society, Vol 10, Pp 660-665 (2022)
Solution-processed In-Zn oxide (IZO) semiconductor thin-film transistors (TFTs) were fabricated with passivation layers of either poly(methyl methacrylate) (PMMA) or cyclic transparent optical polymer (CYTOP). According to the transfer curves obtaine
Externí odkaz:
https://doaj.org/article/7fb46e40c7a149e2993c99601c64e883
Publikováno v:
Materials, Vol 16, Iss 18, p 6201 (2023)
In this study, the characteristics in the lead-free piezoelectric ceramic 0.5Ba(Zr0.2Ti0.8)O3−0.5(Ba0.7Ca0.3)TiO3 (0.5BZT–0.5BCT) were investigated to assess its potential for Rosen-type piezoelectric transformers. This piezoelectric ceramic has
Externí odkaz:
https://doaj.org/article/e2a59624434b4a169d16eaf2debe2823
Publikováno v:
Journal of Asian Ceramic Societies, Vol 9, Iss 3, Pp 1083-1090 (2021)
In this study, MnO2-doped 0.96Pb(Zr0.515,Ti0.485)O3-0.04Pb(Sb0.5,Nb0.5)O3 (0.96PZT-0.04PSN) hard piezoelectric ceramics were fabricated by employing a conventional mixed-oxide process. Hard piezoelectric materials are suitable for mechanical device a
Externí odkaz:
https://doaj.org/article/03645bf7a38949d7abe1a4975773bb9b
Publikováno v:
Journal of Asian Ceramic Societies, Vol 9, Iss 1, Pp 75-84 (2021)
In this study, piezoelectric properties of 0.4Bi(Ni0.5Zr0.5)O3–0.6PbTiO3 (BNZ-PT) and 0.4Bi(Mg0.5Zr0.5)O3–0.6PbTiO3 (BMZ-PT) ceramics were investigated and compared with those of Pb(Zr,Ti)O3 in energy harvester applications. Their piezoelectric p
Externí odkaz:
https://doaj.org/article/10565fc46f394bb2a470b84fd2b321a1
Publikováno v:
Materials, Vol 16, Iss 4, p 1469 (2023)
In this study, the composition of lead-free piezoelectric ceramics (1 − x)(Bi0.5Na0.5)TiO3–x(Ba0.5Sr0.5)TiO3 with excellent piezoelectric properties was investigated. Crystal analysis and electrical and piezoelectric properties were analyzed acco
Externí odkaz:
https://doaj.org/article/6ee2579aef8848519a2b6c4ce86de0eb
Publikováno v:
Nanomaterials, Vol 13, Iss 1, p 45 (2022)
In this study, modeling of optimized lattice mismatch by carbon-dioxide annealing on (In, Ga) co-doped ZnO multi-deposition thin films was investigated with crystallography and optical analysis. (In, Ga) co-doped ZnO multi-deposition thin films with
Externí odkaz:
https://doaj.org/article/8c4ff1785c174333b39363c7b30ed892