Comparative study of absorption efficiency of inclined and vertical InP nanowires
(2017) Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VI 2017 10099.- Abstract
Geometrically designed III-V nanowire arrays are promising candidates for optoelectronics due to their possibility to excite nanophotonic resonances in absorption spectra. Strong absorption resonances can be obtained by proper tailoring of nanowire diameter, length and pitch. Such enhancement of the light absorption is, however, accompanied by undesired resonance dips at specific wavelengths. In this work, we theoretically show that tilting of the nanowires mitigates the absorption dips by exciting strong Mie resonances. In particular, we derive a theoretical optimum inclination angle of about 30° at which the inclined nanowires gain 8% in absorption efficiency compared to vertically standing nanowires in a spectral region matching the... (More)
Geometrically designed III-V nanowire arrays are promising candidates for optoelectronics due to their possibility to excite nanophotonic resonances in absorption spectra. Strong absorption resonances can be obtained by proper tailoring of nanowire diameter, length and pitch. Such enhancement of the light absorption is, however, accompanied by undesired resonance dips at specific wavelengths. In this work, we theoretically show that tilting of the nanowires mitigates the absorption dips by exciting strong Mie resonances. In particular, we derive a theoretical optimum inclination angle of about 30° at which the inclined nanowires gain 8% in absorption efficiency compared to vertically standing nanowires in a spectral region matching the intensity distribution of the sun. The enhancement is due to engineering the excited modes inside the nanowires regarding the symmetry properties of the nanowire/light system without increasing the absorbing material. We expect our results to be important for nanowire-based photovoltaic applications.
(Less)
- author
- Aghaeipour, Mahtab LU ; Pistol, Mats Erik LU and Pettersson, Håkan LU
- organization
- publishing date
- 2017
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Absorption, Inclined nanowire arrays, Mie modes, Nanophotonics, Photovoltaics
- host publication
- Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VI 2017
- volume
- 10099
- article number
- 100990S
- publisher
- SPIE
- conference name
- Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VI 2017
- conference location
- San Francisco, United States
- conference dates
- 2017-01-30 - 2017-02-01
- external identifiers
-
- scopus:85019643025
- wos:000404908300017
- ISBN
- 9781510606395
- DOI
- 10.1117/12.2249840
- language
- English
- LU publication?
- yes
- id
- c4f42d28-b0c1-4998-8aa8-b2c14952dd3d
- date added to LUP
- 2017-06-13 11:26:05
- date last changed
- 2024-03-17 15:41:05
@inproceedings{c4f42d28-b0c1-4998-8aa8-b2c14952dd3d,
abstract = {{<p>Geometrically designed III-V nanowire arrays are promising candidates for optoelectronics due to their possibility to excite nanophotonic resonances in absorption spectra. Strong absorption resonances can be obtained by proper tailoring of nanowire diameter, length and pitch. Such enhancement of the light absorption is, however, accompanied by undesired resonance dips at specific wavelengths. In this work, we theoretically show that tilting of the nanowires mitigates the absorption dips by exciting strong Mie resonances. In particular, we derive a theoretical optimum inclination angle of about 30° at which the inclined nanowires gain 8% in absorption efficiency compared to vertically standing nanowires in a spectral region matching the intensity distribution of the sun. The enhancement is due to engineering the excited modes inside the nanowires regarding the symmetry properties of the nanowire/light system without increasing the absorbing material. We expect our results to be important for nanowire-based photovoltaic applications.</p>}},
author = {{Aghaeipour, Mahtab and Pistol, Mats Erik and Pettersson, Håkan}},
booktitle = {{Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VI 2017}},
isbn = {{9781510606395}},
keywords = {{Absorption; Inclined nanowire arrays; Mie modes; Nanophotonics; Photovoltaics}},
language = {{eng}},
publisher = {{SPIE}},
title = {{Comparative study of absorption efficiency of inclined and vertical InP nanowires}},
url = {{http://dx.doi.org/10.1117/12.2249840}},
doi = {{10.1117/12.2249840}},
volume = {{10099}},
year = {{2017}},
}