Terahertz time-domain spectroscopy (THz-TDS) study of Bi2O2Se and lead halide perovskite thin films
Terahertz (1 terahertz = 10^12 Hz) radiation falls within the region between microwave radiation and infrared radiation in the electromagnetic spectrum. The terahertz band was under- exploited for a long time, especially in comparison with other more well-known bands of the electromagnetic spectr...
Saved in:
| 主要作者: | |
|---|---|
| 其他作者: | |
| 格式: | Final Year Project |
| 語言: | English |
| 出版: |
Nanyang Technological University
2024
|
| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/181291 |
| 標簽: |
添加標簽
沒有標簽, 成為第一個標記此記錄!
|
| 機構: | Nanyang Technological University |
| 語言: | English |
| 總結: | Terahertz (1 terahertz = 10^12 Hz) radiation falls within the region between microwave
radiation and infrared radiation in the electromagnetic spectrum. The terahertz band was under-
exploited for a long time, especially in comparison with other more well-known bands of the
electromagnetic spectrum like microwaves and X-rays, before the technique of time-domain
spectroscopy was introduced.
A powerful method for studying material properties, terahertz time-domain spectroscopy
(THz-TDS) uses ultrashort pulses of THz radiation that enable us to obtain the complex
optical conductivity and other optical properties of a plethora of materials — these include
semiconductors, superconductors, dielectrics, and liquids — without the need for the Kramers-
Kronig relation.
Harnessing THz radiation holds a lot of promise in fields beyond just condensed matter
physics or material studies, expanding into domains like healthcare, security, meteorology and
communication.
In this thesis, I will be using THz-TDS to study the carrier and phonon dynamics of two-
dimensional materials, mathematically derive the transmission coefficient, and convert raw
THz-TDS data to optical conductivity using MATLAB. The materials studied in this thesis
include the two-dimensional semiconductor bismuth oxyselenide (Bi2O2Se) and lead halide
perovskites. |
|---|