| Title | Absorption Modulation, Enhancement, and Narrowing Using Sub-Wavelength Gratings |
| Author | |
| Corresponding Author | Wang，Kai |
| DOI | |
| Publication Years | 2022
|
| ISSN | 2768-6493
|
| ISBN | 978-1-6654-8509-8
|
| Source Title | |
| Pages | 58-63
|
| Conference Date | 13-16 May 2022
|
| Conference Place | Chengdu, China
|
| Abstract | The Sub-Wavelength Grating (SWG) has great potential to be used as a substrate in narrowband photodetectors of an adjustable detection range covered visible and near-infrared spectrum. By the combination of polycrystalline MAPbI3 perovskite material and a specially designed SWG substrate, the absorption spectrum of perovskite material at specific wavelengths within inherently weak band-edge absorption would be enhanced due to guided-mode resonance effect, resulting in a modulated, enhanced, and narrowed absorption of perovskite material. We designed different parameters of SWGs to evaluate the absorption of perovskite within the bandgap of perovskite. The influences of depth, periodicity and fill factor are systematically studied using finite-difference time-domain (FDTD) simulation method. Finally, we achieved a double enhancement of absorption at 780 nm for SWG-perovskite sample compared with planar counterpart at which wavelength normally negligible absorption is witnessed. Moreover, we fabricated the designed SWG substrate and successfully deposited and infiltrated polycrystalline MAPbI3 perovskite material on it. |
| Keywords | |
| SUSTech Authorship | First
; Corresponding
|
| Language | English
|
| URL | [Source Record] |
| Indexed By | |
| Funding Project | National Natural Science Foundation of China[61905107];
|
| EI Accession Number | 20223312574741
|
| EI Keywords | Absorption spectroscopy
; Diffraction gratings
; Finite difference time domain method
; Infrared devices
; Numerical models
; Photodetectors
; Photonics
; Photons
|
| ESI Classification Code | Minerals:482.2
; Light/Optics:741.1
; Optical Devices and Systems:741.3
; Mathematics:921
; Atomic and Molecular Physics:931.3
|
| Scopus EID | 2-s2.0-85136334594
|
| Data Source | Scopus
|
| PDF url | https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9824791 |
| Citation statistics |
Cited Times [WOS]:0
|
| Document Type | Conference paper |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/395618 |
| Department | Department of Electrical and Electronic Engineering |
| Affiliation | 1.Southern University of Science and Technology,Department of Electrical and Electronic Engineering,Shenzhen,China 2.Shenzhen Technology University,College of New Materials and New Energies,Shenzhen,China |
| First Author Affilication | Department of Electrical and Electronic Engineering |
| Corresponding Author Affilication | Department of Electrical and Electronic Engineering |
| First Author's First Affilication | Department of Electrical and Electronic Engineering |
| Recommended Citation GB/T 7714 |
Liu，Chenxi,Tang，Haodong,Liu，Haochen,et al. Absorption Modulation, Enhancement, and Narrowing Using Sub-Wavelength Gratings[C],2022:58-63.
|
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