Surface energy driven miscibility gap suppression during nucleation of III-V ternary alloys
Leshchenko, Egor D. LU and Johansson, Jonas LU
(2021)
In CrystEngComm
23(31).
p.5284-5292
- Abstract
The existence of a miscibility gap limits the range of solid compositions which are possible to achieve under near-equilibrium growth conditions. Circumventing the miscibility gap is of paramount importance for device fabrication. We propose that one of the suppression mechanisms is the nucleus surface energy and explain how the surface energy influences the miscibility gap during nucleation from a liquid melt. By doing this, we start with the formation of the critical nucleus of a ternary alloy considering its surface energy as a combination of the binary ones. For certain nucleation scenarios in the InGaAs materials system we show that the compositional independence of the surface energy term is a good approximation due to similar... (More)
The existence of a miscibility gap limits the range of solid compositions which are possible to achieve under near-equilibrium growth conditions. Circumventing the miscibility gap is of paramount importance for device fabrication. We propose that one of the suppression mechanisms is the nucleus surface energy and explain how the surface energy influences the miscibility gap during nucleation from a liquid melt. By doing this, we start with the formation of the critical nucleus of a ternary alloy considering its surface energy as a combination of the binary ones. For certain nucleation scenarios in the InGaAs materials system we show that the compositional independence of the surface energy term is a good approximation due to similar values for InAs and GaAs pairs. However, a large difference in the surface energies of the two materials may lead to a significant modification of the liquid-solid composition dependence and a complete suppression of the miscibility gap.
(Less)
- author
- Leshchenko, Egor D.
LU
and Johansson, Jonas
LU
- organization
- publishing date
- 2021-08-21
- type
- Contribution to journal
- publication status
- published
- subject
- in
- CrystEngComm
- volume
- 23
- issue
- 31
- pages
- 9 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:85112355028
- ISSN
- 1466-8033
- DOI
- 10.1039/d1ce00743b
- project
- Kinetic and thermodynamic modelling of ternary nanowire growth
- language
- English
- LU publication?
- yes
- id
- 1d0570c5-27cf-42f8-bbf2-5bfdf66e433c
- date added to LUP
- 2021-09-14 13:02:51
- date last changed
- 2023-10-25 07:49:57
@article{1d0570c5-27cf-42f8-bbf2-5bfdf66e433c,
abstract = {{<p>The existence of a miscibility gap limits the range of solid compositions which are possible to achieve under near-equilibrium growth conditions. Circumventing the miscibility gap is of paramount importance for device fabrication. We propose that one of the suppression mechanisms is the nucleus surface energy and explain how the surface energy influences the miscibility gap during nucleation from a liquid melt. By doing this, we start with the formation of the critical nucleus of a ternary alloy considering its surface energy as a combination of the binary ones. For certain nucleation scenarios in the InGaAs materials system we show that the compositional independence of the surface energy term is a good approximation due to similar values for InAs and GaAs pairs. However, a large difference in the surface energies of the two materials may lead to a significant modification of the liquid-solid composition dependence and a complete suppression of the miscibility gap.</p>}},
author = {{Leshchenko, Egor D. and Johansson, Jonas}},
issn = {{1466-8033}},
language = {{eng}},
month = {{08}},
number = {{31}},
pages = {{5284--5292}},
publisher = {{Royal Society of Chemistry}},
series = {{CrystEngComm}},
title = {{Surface energy driven miscibility gap suppression during nucleation of III-V ternary alloys}},
url = {{http://dx.doi.org/10.1039/d1ce00743b}},
doi = {{10.1039/d1ce00743b}},
volume = {{23}},
year = {{2021}},
}