Finite-difference time-domain study of Si nanorod arrays with UV and green light

Küçük Resim Yok

Tarih

2022

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Korean Physical Soc

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

The finite-difference time-domain (FDTD) simulation on the absorption properties of Si nanorods with different spacings at UV and green light has been conducted. It was revealed that the enhanced absorption along the sidewalls of Si nanorods occurred, parallel to the light polarization directions, at UV-light while the green light is literally confined towards the nanorod center which leads to the V-shape absorption. The significant difference in absorption profile at two different illuminations is mainly due to the distinct origin of the light-matter interactions. For the UV light, the polarization induced local electric field in the gap between nanorods is responsible for the results observed. However, the confined prolonged absorption of the green light is attributed to the non-negligible total internal reflection inside Si nanorod waveguide.

Açıklama

Anahtar Kelimeler

Si nanorods, FDTD, Absorption, Electric field, Waveguide mode

Kaynak

Journal of the Korean Physical Society

WoS Q Değeri

Q4

Scopus Q Değeri

Q4

Cilt

81

Sayı

10

Künye