Modulated 3D light absorption profile in GaN nanorod arrays
| Autor: | Hye-Won Seo, Filiz Keles |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science business.industry Depth dependent Finite-difference time-domain method Physics::Optics General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Electric field Lattice (order) 0103 physical sciences Optoelectronics General Materials Science Nanorod 0210 nano-technology business Absorption (electromagnetic radiation) |
| Zdroj: | Current Applied Physics. 22:50-54 |
| ISSN: | 1567-1739 |
| DOI: | 10.1016/j.cap.2020.12.001 |
| Popis: | The depth dependent UV-light absorption profile of GaN nanorods with different lattice arrays and filling factors was studied using finite-difference time-domain (FDTD) methods. By comparing to the results from Lambert-Beer's law with Maxwell-Garnett effective medium theory, we identified the quantitative contribution from nano-scattering effect on the light absorption in the nanorod arrays. The FDTD study of graphical 3D profile of light absorption and electric field intensity was parallelly conducted to investigate the origin of the nano-scattering. We found that the coupled electric field in the gap regions led to the larger absorption cross-section of the nanorod arrays, which is attributed to the distorted depth profile of the light absorption. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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