Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.17570 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909327050145792 |
|---|---|
| author | Jangra, Divya De, Binoy Krishna Sharma, Pragati Chakraborty, Koushik Parate, Shubham Yogi, Arvind Kumar Mittal, Ranjan Gupta, Mayanak K Nukala, Pavan Velpula, Praveen Kumar Sathe, Vasant G. |
| author_facet | Jangra, Divya De, Binoy Krishna Sharma, Pragati Chakraborty, Koushik Parate, Shubham Yogi, Arvind Kumar Mittal, Ranjan Gupta, Mayanak K Nukala, Pavan Velpula, Praveen Kumar Sathe, Vasant G. |
| contents | The anisotropic light-matter interactions in 2D materials have garnered significant attention for their potential to develop futuristic polarization-based optoelectronic devices, such as photodetectors and photo-actuators. In this study, we investigate the polarization-dependent interactions in ferroelectric 3R alpha-In2Se3 using Angle-Resolved Polarized Raman Spectroscopy (ARPRS) with different excitation lasers. Our experimental findings supported by complementary Density Functional Theory calculations demonstrate that the light-matter interactions depend not only on the crystallographic orientation but also on the excitation energy. Scanning transmission electron microscopy (STEM) confirms the highly anisotropic 3R crystal structure of alpha-In2Se3. This anisotropy in crystal structure facilitates significant optical anisotropy, driven by a complex interplay of electron-photon and electron-phonon interactions, which is reflected in the complex nature of the Raman tensor elements. These anisotropy interactions extend to the materials electrical response under light illumination. Remarkably, the anisotropic photo-response can be tuned by both polarization and wavelength of the incident light, making In2Se3 a promising material for advanced polarization-sensitive photodetection applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17570 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Wavelength-dependent anisotropic light-matter interaction in 2D ferroelectric In2Se3 Jangra, Divya De, Binoy Krishna Sharma, Pragati Chakraborty, Koushik Parate, Shubham Yogi, Arvind Kumar Mittal, Ranjan Gupta, Mayanak K Nukala, Pavan Velpula, Praveen Kumar Sathe, Vasant G. Materials Science Mesoscale and Nanoscale Physics The anisotropic light-matter interactions in 2D materials have garnered significant attention for their potential to develop futuristic polarization-based optoelectronic devices, such as photodetectors and photo-actuators. In this study, we investigate the polarization-dependent interactions in ferroelectric 3R alpha-In2Se3 using Angle-Resolved Polarized Raman Spectroscopy (ARPRS) with different excitation lasers. Our experimental findings supported by complementary Density Functional Theory calculations demonstrate that the light-matter interactions depend not only on the crystallographic orientation but also on the excitation energy. Scanning transmission electron microscopy (STEM) confirms the highly anisotropic 3R crystal structure of alpha-In2Se3. This anisotropy in crystal structure facilitates significant optical anisotropy, driven by a complex interplay of electron-photon and electron-phonon interactions, which is reflected in the complex nature of the Raman tensor elements. These anisotropy interactions extend to the materials electrical response under light illumination. Remarkably, the anisotropic photo-response can be tuned by both polarization and wavelength of the incident light, making In2Se3 a promising material for advanced polarization-sensitive photodetection applications. |
| title | Wavelength-dependent anisotropic light-matter interaction in 2D ferroelectric In2Se3 |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2409.17570 |