Engineering the Size Distributions of Ordered GaAs Nanowires on Silicon
(2017) In Nano Letters 17(7). p.4101-4108- Abstract
Reproducible integration of III-V semiconductors on silicon can open new path toward CMOS compatible optoelectronics and novel design schemes in next generation solar cells. Ordered arrays of nanowires could accomplish this task, provided they are obtained in high yield and uniformity. In this work, we provide understanding on the physical factors affecting size uniformity in ordered GaAs arrays grown on silicon. We show that the length and diameter distributions in the initial stage of growth are not much influenced by the Poissonian fluctuation-induced broadening, but rather are determined by the long incubation stage. We also show that the size distributions are consistent with the double exponential shapes typical for macroscopic... (More)
Reproducible integration of III-V semiconductors on silicon can open new path toward CMOS compatible optoelectronics and novel design schemes in next generation solar cells. Ordered arrays of nanowires could accomplish this task, provided they are obtained in high yield and uniformity. In this work, we provide understanding on the physical factors affecting size uniformity in ordered GaAs arrays grown on silicon. We show that the length and diameter distributions in the initial stage of growth are not much influenced by the Poissonian fluctuation-induced broadening, but rather are determined by the long incubation stage. We also show that the size distributions are consistent with the double exponential shapes typical for macroscopic nucleation with a large critical length after which the nanowires grow irreversibly. The size uniformity is dramatically improved by increasing the As4 flux, suggesting a new path for obtaining highly uniform arrays of GaAs nanowires on silicon.
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- author
- Vukajlovic-Plestina, Jelena ; Kim, Wonjong ; Dubrovski, Vladimir G ; Tütüncüoğlu, Gözde ; Lagier, Maxime ; Potts, Heidi LU ; Friedl, Martin and Fontcuberta I Morral, Anna
- publishing date
- 2017-07-12
- type
- Contribution to journal
- publication status
- published
- in
- Nano Letters
- volume
- 17
- issue
- 7
- pages
- 8 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:28613909
- scopus:85024114409
- ISSN
- 1530-6992
- DOI
- 10.1021/acs.nanolett.7b00842
- language
- English
- LU publication?
- no
- id
- 483ae203-72c3-4754-929c-45ebfceaaba8
- date added to LUP
- 2019-05-15 09:52:30
- date last changed
- 2024-01-15 20:52:53
@article{483ae203-72c3-4754-929c-45ebfceaaba8,
abstract = {{<p>Reproducible integration of III-V semiconductors on silicon can open new path toward CMOS compatible optoelectronics and novel design schemes in next generation solar cells. Ordered arrays of nanowires could accomplish this task, provided they are obtained in high yield and uniformity. In this work, we provide understanding on the physical factors affecting size uniformity in ordered GaAs arrays grown on silicon. We show that the length and diameter distributions in the initial stage of growth are not much influenced by the Poissonian fluctuation-induced broadening, but rather are determined by the long incubation stage. We also show that the size distributions are consistent with the double exponential shapes typical for macroscopic nucleation with a large critical length after which the nanowires grow irreversibly. The size uniformity is dramatically improved by increasing the As4 flux, suggesting a new path for obtaining highly uniform arrays of GaAs nanowires on silicon.</p>}},
author = {{Vukajlovic-Plestina, Jelena and Kim, Wonjong and Dubrovski, Vladimir G and Tütüncüoğlu, Gözde and Lagier, Maxime and Potts, Heidi and Friedl, Martin and Fontcuberta I Morral, Anna}},
issn = {{1530-6992}},
language = {{eng}},
month = {{07}},
number = {{7}},
pages = {{4101--4108}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Nano Letters}},
title = {{Engineering the Size Distributions of Ordered GaAs Nanowires on Silicon}},
url = {{http://dx.doi.org/10.1021/acs.nanolett.7b00842}},
doi = {{10.1021/acs.nanolett.7b00842}},
volume = {{17}},
year = {{2017}},
}