|
|
| Type |
Symposium |
| Area |
Physical Chemistry of Materials |
| Room No. |
304호 |
| Time |
THU 14:00-: |
| Code |
PHYS1-2 |
| Subject |
A study on two-dimensional materials for energy harvesting with first-principles calculations |
| Authors |
신영한
울산대학교 물리학과, Korea |
| Abstract |
As the electronic devices become smaller, all the components inside the devices need to be decreased.
Random access memories are already in a nanoscale, and smart phones are in a race against the thickness. When the components are getting smaller and smaller, the materials for these components face problems such as leakage currents and stability. The well-known two-dimensional material, graphene, has been regarded as a promising material for electrodes due to its zero band gap. However, not only metallic but also semiconducting materials are required to compose electronic devices. Piezoelectricity can be obtained for dielectric materials, and electrolytes need insulating properties. To make graphene semiconducting, many methods were developed, and one of them is the functionalization. Researchers also found that other two-dimensional materials such as MoS2 and SnS2 are intrisically semiconducting. Focussing on the band gap tuning, piezoelectricity, ferroelectricity, and ion transport,1,2,3 I will show physical and chemical properties of a series of two-dimensional materials that my research team has been studied in recent several years by using density functional theory calculations.
[1] A. Samad, M. Noor-A-Alam, and Y.-H. Shin, J. Mater. Chem. 4, 14316-14323 (2016).
[2] M. Noor-A-Alam and Y.-H. Shin, Phys. Chem. Chem. Phys. 18, 20443-20449 (2016).
[3] M. Noor-A-Alam, H.J. Kim, and Y.-H. Shin, J. Appl. Phys. 117, 224304 (2015). |
| E-mail |
hoponpop@ulsan.ac.kr |
|
119th General Meeting of the KCS