GaAs nanopillar arrays with suppressed broadband reflectance and high optical quality for photovoltaic applications
(2012) In Optical Materials Express 2(11). p.1671-1679- Abstract
- We report on fabrication and optical characterization of GaAs nanopillar (NP) arrays, obtained using a combination of low-cost mask generation by self-assembled silica particles (nanosphere lithography) and dry etching. Tapered structures (conical and frustum NP arrays) are fabricated by appropriate optimization of process parameters. Significant suppression of surface reflectance is observed for both geometries over a broad wavelength range. Simulations, based on finite difference time domain (FDTD) method, show good agreement with reflectivity measurements and serve as a guideline for design of NPs and understanding their interaction with light. A combination of wet chemical etching and sulfur-based passivation of GaAs NPs, results in... (More)
- We report on fabrication and optical characterization of GaAs nanopillar (NP) arrays, obtained using a combination of low-cost mask generation by self-assembled silica particles (nanosphere lithography) and dry etching. Tapered structures (conical and frustum NP arrays) are fabricated by appropriate optimization of process parameters. Significant suppression of surface reflectance is observed for both geometries over a broad wavelength range. Simulations, based on finite difference time domain (FDTD) method, show good agreement with reflectivity measurements and serve as a guideline for design of NPs and understanding their interaction with light. A combination of wet chemical etching and sulfur-based passivation of GaAs NPs, results in more than one order of magnitude enhancement in PL intensity and recovery of PL line-width, which is very promising for photovoltaic applications. (C) 2012 Optical Society of America (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3259652
- author
- Sanatinia, R. ; Awan, K. M. ; Naureen, S. ; Anttu, Nicklas LU ; Ebraert, E. and Anand, S.
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Optical Materials Express
- volume
- 2
- issue
- 11
- pages
- 9 pages
- publisher
- Optical Society of America
- external identifiers
-
- wos:000310647500023
- scopus:84870370508
- ISSN
- 2159-3930
- DOI
- 10.1364/OME.2.001671
- language
- English
- LU publication?
- yes
- id
- 8876e30e-3cb3-4ebe-9dc3-b9fd5d724b9f (old id 3259652)
- date added to LUP
- 2016-04-01 13:47:55
- date last changed
- 2023-11-12 22:06:36
@article{8876e30e-3cb3-4ebe-9dc3-b9fd5d724b9f,
abstract = {{We report on fabrication and optical characterization of GaAs nanopillar (NP) arrays, obtained using a combination of low-cost mask generation by self-assembled silica particles (nanosphere lithography) and dry etching. Tapered structures (conical and frustum NP arrays) are fabricated by appropriate optimization of process parameters. Significant suppression of surface reflectance is observed for both geometries over a broad wavelength range. Simulations, based on finite difference time domain (FDTD) method, show good agreement with reflectivity measurements and serve as a guideline for design of NPs and understanding their interaction with light. A combination of wet chemical etching and sulfur-based passivation of GaAs NPs, results in more than one order of magnitude enhancement in PL intensity and recovery of PL line-width, which is very promising for photovoltaic applications. (C) 2012 Optical Society of America}},
author = {{Sanatinia, R. and Awan, K. M. and Naureen, S. and Anttu, Nicklas and Ebraert, E. and Anand, S.}},
issn = {{2159-3930}},
language = {{eng}},
number = {{11}},
pages = {{1671--1679}},
publisher = {{Optical Society of America}},
series = {{Optical Materials Express}},
title = {{GaAs nanopillar arrays with suppressed broadband reflectance and high optical quality for photovoltaic applications}},
url = {{http://dx.doi.org/10.1364/OME.2.001671}},
doi = {{10.1364/OME.2.001671}},
volume = {{2}},
year = {{2012}},
}