|
|
| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
MAT.P-443 |
| Subject |
Synthesis and Characterization of Unexploited Ⅳ-Ⅴ Layered Structures |
| Authors |
Jong Hyun Lee, Jeunghee Park1,*
Korea University, Korea
1Department of Materials Chemistry, Korea University, Korea
|
| Abstract |
The recent discovery of graphene has given rise to significant an interest in searching for new two- as GeP, GeAs, SiAs, and GeAs2 using the exfoliation of bulk crystals that were synthesized by Bridgeman melt-growth method. A tip sonication of bulk crystal in N-methyl pyrrolidine (NMP) produced thin nanosheet to show the dramatic increase of the optical band gap, which is in the visible-light range of 2.1-2.3 eV. dimensional (2D) materials with their three-dimensional prototypes, where the 2D layers are stacked with weak van der Waals interactions. One of the remarkable properties of the 2D nanostructures is their unique quantum confinement effect at the 2D limit. As new potential class of 2D materials, IV-V MXx compounds (M = Si, Ge, Sn, Pb; X = P, As, Sb, Bi; x = 1-3) have been recently proposed from theoretical calculations. The Eg of their monolayer can reach 2 eV, whereas that of the bulk is below 1 eV. In the present work, we synthesized the MXx nanosheets such These band gaps are in a remarkable agreement with the theoretical prediction. We demonstrated that the nanosheets deposited n-Si nanowire arrays can be a promising photoanode for visible-light-driven water splitting. |
| E-mail |
dksk8974@korea.ac.kr |
|
123rd General Meeting of the KCS