Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Xuan Au Nguyen"'
Autor:
Xuan Au Nguyen, Long V. Le, Suk Hyun Kim, Young Duck Kim, Mangesh S. Diware, Tae Jung Kim, Young Dong Kim
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-9 (2024)
Abstract Monolayer materials typically display intriguing temperature-dependent dielectric and optical properties, which are crucial for improving the structure and functionality of associated devices. Due to its unique photoelectric capabilities, mo
Externí odkaz:
https://doaj.org/article/85330d4caf0c47f8ad5a900bf91354e9
Autor:
Long V. Le, Tran Thi Thu Huong, Tien-Thanh Nguyen, Xuan Au Nguyen, Thi Huong Nguyen, Sunglae Cho, Young Dong Kim, Tae Jung Kim
Publikováno v:
Crystals, Vol 14, Iss 6, p 539 (2024)
We report the absorption and photoluminescence spectra of GaSe single crystals in the near-edge region. The temperatures explored the range from 17 to 300 K. Specifically, at a temperature of 17 K, the photoluminescence spectrum reveals an interestin
Externí odkaz:
https://doaj.org/article/6a6029dad70f4598a2d92c64056cf89f
Autor:
Long V. Le, Tien-Thanh Nguyen, Xuan Au Nguyen, Do Duc Cuong, Thi Huong Nguyen, Van Quang Nguyen, Sunglae Cho, Young Dong Kim, Tae Jung Kim
Publikováno v:
Nanomaterials, Vol 14, Iss 10, p 839 (2024)
We report the temperature dependences of the dielectric function ε = ε1 + iε2 and critical point (CP) energies of the uniaxial crystal GaSe in the spectral energy region from 0.74 to 6.42 eV and at temperatures from 27 to 300 K using spectroscopic
Externí odkaz:
https://doaj.org/article/28fadc89f56e436bbed12a35ea15eea1
Autor:
Van Long Le, Do Duc Cuong, Hoang Tung Nguyen, Xuan Au Nguyen, Bogyu Kim, Kyujin Kim, Wonjun Lee, Soon Cheol Hong, Tae Jung Kim, Young Dong Kim
Publikováno v:
AIP Advances, Vol 10, Iss 10, Pp 105003-105003-6 (2020)
We investigate analytically the anisotropic dielectric properties of single-crystal α-SnS near the fundamental absorption edge by considering atomic orbitals. Most striking is the excitonic feature in the armchair- (b-) axis direction, which is part
Externí odkaz:
https://doaj.org/article/4111fedb23be41b591702d84e852f0b6
Publikováno v:
AIP Advances, Vol 9, Iss 12, Pp 125132-125132-6 (2019)
We report a model dielectric function, ε = ε1 + iε2, of MoSe2 from 1 to 6.42 eV with which the optical property of a MoSe2 monolayer can be calculated at arbitrary temperatures from 31 to 300 K for potential application for device designs based on
Externí odkaz:
https://doaj.org/article/07759e7b3a8b439b9fa768211ed83523
Autor:
Xuan Au Nguyen, Thi Minh Hai Nguyen, Tae Jung Kim, Long Van Le, Tung Hoang Nguyen, Bogyu Kim, Kyujin Kim, Wonjun Lee, Sunglae Cho, Young Dong Kim
Publikováno v:
Crystals, Vol 11, Iss 5, p 548 (2021)
We report the dielectric tensors on the cleavage plane of biaxial SnSxSe1-x alloys in the spectral energy region from 0.74 to 6.42 eV obtained by spectroscopic ellipsometry. Single-crystal SnSxSe1-x alloys were grown by the temperature-gradient metho
Externí odkaz:
https://doaj.org/article/2f71af15cd13480c9067e56bacea9fc9
Publikováno v:
Journal of the Korean Physical Society. 80:59-62
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94140fa6b3b37a011ad43175951d12c1
https://doi.org/10.1007/s40042-021-00364-z
https://doi.org/10.1007/s40042-021-00364-z
Publikováno v:
Journal of the Korean Physical Society. 78:297-301
We present the principal components of the dielectric tensor for α-SnSe biaxial single crystal in the spectral range from 0.74 to 6.42 eV at room temperature (300 K) using spectroscopic ellipsometry. Aspnes’ first-order approximation method was ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9573684fc228f9505fe3b179262241fa
https://doi.org/10.1007/s40042-021-00070-w
https://doi.org/10.1007/s40042-021-00070-w
Autor:
Wonjun Lee, Young Dong Kim, Bogyu Kim, Hoang Tung Nguyen, Kyu-Jin Kim, Van Long Le, Tae Jung Kim, Xuan Au Nguyen
Publikováno v:
Journal of the Korean Physical Society. 77:981-986
We report the dielectric function e = e1 + ie2 and the critical point (CP) energies of the orthorhombic SnS0.52Se0.48 alloy for the zigzag (a)and thearmchair(6) directions in the spectral energy range from 0.74 to 6.42 eV and the temperature range fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64e245e400a57237efc93e9577bd7df9
https://doi.org/10.3938/jkps.77.981
https://doi.org/10.3938/jkps.77.981
Publikováno v:
Journal of the Korean Physical Society. 77:1178-1182
Here, we report parameter values for the model dielectric function (e = e1 + ie2) of the SnSxSe1−x alloy in the spectral range from 0.74 to 6.4 eV and the composition range 0 ≤; x ≤ 1 by using the Tauc-Lorentz (TL) model. The experimentally rep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c1ee03c1e13b8f917d293b9b6de830b
https://doi.org/10.3938/jkps.77.1178
https://doi.org/10.3938/jkps.77.1178