Applied Surface Science, volume 602, pages 154321
Mg2Si is the new black: Introducing a black silicide with >95% average absorption at 200–1800 nm wavelengths
Shevlyagin A.V.
1
,
Ilyaschenko Vladimir
1
,
Kuchmizhak Aleksandr A.
1, 2
,
Mitsai E
1
,
Sergeev A.
1
,
Amosov Andrey V.
1
,
Gerasimenko Andrey
3
,
Publication type: Journal Article
Publication date: 2022-11-01
Journal:
Applied Surface Science
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 6.7
ISSN: 01694332
Surfaces, Coatings and Films
General Chemistry
General Physics and Astronomy
Condensed Matter Physics
Surfaces and Interfaces
Abstract
Textured silicon surface structures, in particular black silicon (b-Si), open up possibilities for Si-based solar cells and photodetectors to be extremely thin and highly sensitive owing to perfect light-trapping and anti-reflection properties. However, near-infrared (NIR) performance of bare b-Si is limited by Si band gap of 1.12 eV or 1100 nm. This work reports a simple method to increase NIR absorption of b-Si by $in$ $vacuo$ silicidation with magnesium. Obtained Mg$_2$Si/b-Si heterostructure has a complex geometry where b-Si nanocones are covered by Mg$_2$Si shells and crowned with flake-like Mg$_2$Si hexagons. Mg$_2$Si formation atop b-Si resulted in 5-fold lower reflectivity and optical absorption to be no lower than 88\% over 200-1800 nm spectral range. More importantly, Mg$_2$Si/b-Si heterostructure is more adjusted to match AM-1.5 solar spectrum with theoretically higher photogenerated current density. The maximal advantage is demonstrated in the NIR region compared to bare b-Si in full accordance with one's expectations about NIR sensitive narrow band gap ($\sim$0.75 eV) semiconductor with high absorption coefficient, which is Mg$_2$Si. Results of optical simulation confirmed the superiority of Mg$_2$Si/b-Si NIR performance. Therefore, this new wide-band optical absorber called black silicide proved rather competitive alongside state-of-the-art approaches to extend b-Si spectral blackness.
Citations by journals
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1
|
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Materials
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Materials
1 publication, 33.33%
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Silicon
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Silicon
1 publication, 33.33%
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Russian Metallurgy (Metally)
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Russian Metallurgy (Metally)
1 publication, 33.33%
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|
1
|
Citations by publishers
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1
|
|
|
Multidisciplinary Digital Publishing Institute (MDPI)
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Multidisciplinary Digital Publishing Institute (MDPI)
1 publication, 33.33%
|
|
Springer Nature
|
Springer Nature
1 publication, 33.33%
|
|
Pleiades Publishing
|
Pleiades Publishing
1 publication, 33.33%
|
|
1
|
- We do not take into account publications that without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Shevlyagin A. et al. Mg2Si is the new black: Introducing a black silicide with >95% average absorption at 200–1800 nm wavelengths // Applied Surface Science. 2022. Vol. 602. p. 154321.
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Shevlyagin A., Ilyaschenko V., Kuchmizhak A. A., Mitsai E., Sergeev A., Amosov A. V., Gerasimenko A., Gutakovskii A. Mg2Si is the new black: Introducing a black silicide with >95% average absorption at 200–1800 nm wavelengths // Applied Surface Science. 2022. Vol. 602. p. 154321.
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TY - JOUR
DO - 10.1016/j.apsusc.2022.154321
UR - https://doi.org/10.1016%2Fj.apsusc.2022.154321
TI - Mg2Si is the new black: Introducing a black silicide with >95% average absorption at 200–1800 nm wavelengths
T2 - Applied Surface Science
AU - Shevlyagin, A.V.
AU - Ilyaschenko, Vladimir
AU - Kuchmizhak, Aleksandr A.
AU - Mitsai, E
AU - Sergeev, A.
AU - Amosov, Andrey V.
AU - Gerasimenko, Andrey
AU - Gutakovskii, Anton
PY - 2022
DA - 2022/11/01 00:00:00
PB - Elsevier
SP - 154321
VL - 602
SN - 0169-4332
ER -
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@article{2022_Shevlyagin,
author = {A.V. Shevlyagin and Vladimir Ilyaschenko and Aleksandr A. Kuchmizhak and E Mitsai and A. Sergeev and Andrey V. Amosov and Andrey Gerasimenko and Anton Gutakovskii},
title = {Mg2Si is the new black: Introducing a black silicide with >95% average absorption at 200–1800 nm wavelengths},
journal = {Applied Surface Science},
year = {2022},
volume = {602},
publisher = {Elsevier},
month = {nov},
url = {https://doi.org/10.1016%2Fj.apsusc.2022.154321},
pages = {154321},
doi = {10.1016/j.apsusc.2022.154321}
}