Absorption of light in InP nanowire arrays
Anttu, Nicklas LU ; Abrand, Alireza ; Asoli, Damir ; Heurlin, Magnus LU ; Aberg, Ingvar ; Samuelson, Lars LU and Borgström, Magnus LU
(2014)
In Nano Reseach
7(6).
p.816-823
- Abstract
- An understanding of the absorption of light is essential for efficient photovoltaic and photodetection applications with III-V nanowire arrays. Here, we correlate experiments with modeling and verify experimentally the predicted absorption of light in InP nanowire arrays for varying nanowire diameter and length. We find that 2,000 nm long nanowires in a pitch of 400 nm can absorb 94% of the incident light with energy above the band gap and, as a consequence, light which in a simple ray-optics description would be travelling between the nanowires can be efficiently absorbed by the nanowires. Our measurements demonstrate that the absorption for long nanowires is limited by insertion reflection losses when light is coupled from the air... (More)
- An understanding of the absorption of light is essential for efficient photovoltaic and photodetection applications with III-V nanowire arrays. Here, we correlate experiments with modeling and verify experimentally the predicted absorption of light in InP nanowire arrays for varying nanowire diameter and length. We find that 2,000 nm long nanowires in a pitch of 400 nm can absorb 94% of the incident light with energy above the band gap and, as a consequence, light which in a simple ray-optics description would be travelling between the nanowires can be efficiently absorbed by the nanowires. Our measurements demonstrate that the absorption for long nanowires is limited by insertion reflection losses when light is coupled from the air top-region into the array. These reflection losses can be reduced by introducing a smaller diameter to the nanowire-part closest to the air top-region. For nanowire arrays with such a nanowire morphology modulation, we find that the absorptance increases monotonously with increasing diameter of the rest of the nanowire. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4667904
- author
- Anttu, Nicklas
LU
; Abrand, Alireza
; Asoli, Damir
; Heurlin, Magnus
LU
; Aberg, Ingvar
; Samuelson, Lars
LU
and Borgström, Magnus
LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- indium phosphide, semiconductor, nanowire, absorption of light
- in
- Nano Reseach
- volume
- 7
- issue
- 6
- pages
- 816 - 823
- publisher
- Springer
- external identifiers
-
- wos:000339892000002
- scopus:84902331188
- ISSN
- 1998-0124
- DOI
- 10.1007/s12274-014-0442-y
- language
- English
- LU publication?
- yes
- id
- 6739f346-373f-469e-b972-661de15d3412 (old id 4667904)
- date added to LUP
- 2016-04-01 11:06:35
- date last changed
- 2024-10-07 20:46:01
@article{6739f346-373f-469e-b972-661de15d3412,
abstract = {{An understanding of the absorption of light is essential for efficient photovoltaic and photodetection applications with III-V nanowire arrays. Here, we correlate experiments with modeling and verify experimentally the predicted absorption of light in InP nanowire arrays for varying nanowire diameter and length. We find that 2,000 nm long nanowires in a pitch of 400 nm can absorb 94% of the incident light with energy above the band gap and, as a consequence, light which in a simple ray-optics description would be travelling between the nanowires can be efficiently absorbed by the nanowires. Our measurements demonstrate that the absorption for long nanowires is limited by insertion reflection losses when light is coupled from the air top-region into the array. These reflection losses can be reduced by introducing a smaller diameter to the nanowire-part closest to the air top-region. For nanowire arrays with such a nanowire morphology modulation, we find that the absorptance increases monotonously with increasing diameter of the rest of the nanowire.}},
author = {{Anttu, Nicklas and Abrand, Alireza and Asoli, Damir and Heurlin, Magnus and Aberg, Ingvar and Samuelson, Lars and Borgström, Magnus}},
issn = {{1998-0124}},
keywords = {{indium phosphide; semiconductor; nanowire; absorption of light}},
language = {{eng}},
number = {{6}},
pages = {{816--823}},
publisher = {{Springer}},
series = {{Nano Reseach}},
title = {{Absorption of light in InP nanowire arrays}},
url = {{http://dx.doi.org/10.1007/s12274-014-0442-y}},
doi = {{10.1007/s12274-014-0442-y}},
volume = {{7}},
year = {{2014}},
}