Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Jung-Hwan Hyung"'
Autor:
Jung-Hwan Hyung, Chang-Hee Hong, Young Jae Park, Min Han, Kang Bok Ko, Ko Ku Kang, Nam Han, Tran Viet Cuong, Beo Deul Ryu
Publikováno v:
Materials Science in Semiconductor Processing. 59:45-49
We investigated the thermal stability and electrical properties of nitrogen-doped reduced graphene oxide (NrGO)/n–type Si solar cells. A NrGO layer was used as a transparent electrode as well as an electron-hole separation layer simultaneously. The
Autor:
Min Han, Kang Bok Ko, Tran Viet Cuong, Beo Deul Ryu, Young Jae Park, Jung-Hwan Hyung, Chang-Hee Hong, Jaehee Cho
Publikováno v:
Materials Science in Semiconductor Processing. 44:1-7
We investigated the effect of the size of graphene oxide (GO) sheets made with two different types of GO solution on the performance of Si-based solar cells. Large-sized reduced GO (rGO) with an in-plane crystalline diameter of 3.42 nm has smaller de
Autor:
Kang Bok Ko, Beo Deul Ryu, Jung-Hwan Hyung, Chang-Hee Hong, Nam Han, Ko Ku Kang, Tran Viet Cuong, Gil-Sung Kim, Min Han
Publikováno v:
RSC Advances. 6:72342-72350
We demonstrated that a reduced graphene oxide (rGO) layer inserted between a poly(3,4-etylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and Si interface improves the stability of Si-organic hybrid solar cells. Thermal reduction of a graphene
Autor:
Jung-Hwan Hyung, Gil-Sung Kim, Jin-Tak Jeong, In-Hwan Choi, Chang-Hee Hong, Seoungjin Yun, Jung-Hyuk Koh, Sang-Kwon Lee
Publikováno v:
Journal of Nanoelectronics and Optoelectronics. 10:229-233
Autor:
Dong-Joo Kim, No-Won Park, Gil-Sung Kim, Jung-Hwan Hyung, Chang-Hee Hong, Keun Soo Kim, Sang-Kwon Lee, Jung-Hyuk Koh, Won-Yong Lee
Publikováno v:
Journal of the Korean Physical Society. 66:22-26
We report on the electrical properties, such as the ideality factors and Schottky barrier heights, that were obtained by using current density — voltage (J — V ) and capacitance — voltage (C — V ) characteristics. To fabricate circularly- and
Autor:
Dong-Joo Kim, Sang-Kwon Lee, No-Won Park, Gil-Sung Kim, Myung Kyu Lee, Rong Fan, Mi-Ri Lee, Jin-Kyeong Seol, Jung-Hwan Hyung
Publikováno v:
Journal of Biomedical Nanotechnology. 10:1030-1040
Nanostructured surfaces emerge as a new class of material for capture and separation of cell populations including primary immune cells and disseminating rare tumor cells, but the underlying mechanism remains elusive. Although it has been speculated
Publikováno v:
Journal of Alloys and Compounds. 586:549-554
Lead-free Bi0.5Na0.5TiO3 (BNT)–Bi0.5K0.5TiO3 (BKT)–BaTiO3 (BT) piezoelectric thin films with compositions near the morphotropic phase boundary (MPB) were deposited by metal-organic solution deposition on Pt/Ti/SiO2/Si (1 0 0) substrates. The comp
Publikováno v:
Journal of the Korean Physical Society. 62:794-799
The piezoelectric and the ferroelectric properties of x-mol% Li-doped 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 (BNT-BT-Li x ), x = 0, 5, 10, 15, 20) lead-free piezoelectric thin films deposited on Pt (111)/Ti/SiO2/Si substrates via a metal-organic solution depo
Autor:
Jung-Hwan Hyung, Jin-Tak Jeong, Mun-Ki Choi, Ahmad Umar, Jung-Taek Lim, Gil-Sung Kim, Yumin Sim, Keun Soo Kim, Sang-Kwon Lee, Maeng-Je Seong
Publikováno v:
Scientific Reports
Control of living cells on biocompatible materials or on modified substrates is important for the development of bio-applications, including biosensors and implant biomaterials. The topography and hydrophobicity of substrates highly affect cell adhes
Autor:
Sang-Kwon Lee, Jung-Hwan Hyung, Yun-Ho Yang, Bok-Hee Kim, Susant Kumar Acharya, Byung-Guk Ahn
Publikováno v:
Journal of Alloys and Compounds. 540:204-209
Lead-free 0.94Bi 0.5 Na 0.5 TiO 3 –0.06BaTiO 3 (BNT–BT) piezoelectric thin films were prepared by metal-organic solution deposition onto a Pt/Ti/SiO 2 /Si substrate. A dense and well crystallized thin film with a perovskite phase was obtained by