Preparation and optical properties of higher manganese silicide, (Mn,Fe)Si                         γ                         , thin films

Kei Hayashi; Kentaro Ishii; Chihiro Kawasaki; Ryosuke Honda; Yuzuru Miyazaki

doi:10.1016/j.apsusc.2018.07.141

Preparation and optical properties of higher manganese silicide, (Mn,Fe)Si _γ , thin films

Kei Hayashi, Kentaro Ishii, Chihiro Kawasaki, Ryosuke Honda, Yuzuru Miyazaki

ENG - Applied Physics

Research output: Contribution to journal › Article › peer-review

Abstract

In this article, the optical properties of thin films of higher manganese silicide (HMS) systems, MnSi _γ and (Mn,Fe)Si _γ , were investigated. Band structure calculations were performed using the Mn ₁₁ Si ₁₉ and (Mn _31/44 Fe _13/44 ) ₁₁ Si ₁₉ crystal structure models of HMS to predict the conduction types and band gaps of MnSi _γ and Mn _0.7 Fe _0.3 Si _γ , respectively. Using a pulsed laser deposition method, p-type MnSi _γ and n-type Mn _0.7 Fe _0.3 Si _γ thin films with a-axis orientation were grown on R-sapphire substrates. The measured direct band gaps were 0.81(1) eV for the MnSi _γ thin film and 0.83(2) eV for the Mn _0.7 Fe _0.3 Si _γ thin film. These results demonstrate the potential of (Mn,Fe)Si _γ -based near-infrared absorption solar cells.

Original language	English
Pages (from-to)	700-704
Number of pages	5
Journal	Applied Surface Science
Volume	458
DOIs	https://doi.org/10.1016/j.apsusc.2018.07.141
Publication status	Published - 2018 Nov 15

Keywords

Electronic structure
Epitaxial growth
Fe substitution
Higher manganese silicide
Optical absorption
Pulsed laser deposition

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/j.apsusc.2018.07.141

Cite this

Preparation and optical properties of higher manganese silicide, (Mn,Fe)Si _γ , thin films . / Hayashi, Kei; Ishii, Kentaro; Kawasaki, Chihiro; Honda, Ryosuke; Miyazaki, Yuzuru.

In: Applied Surface Science, Vol. 458, 15.11.2018, p. 700-704.

Research output: Contribution to journal › Article › peer-review

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title = " Preparation and optical properties of higher manganese silicide, (Mn,Fe)Si γ , thin films ",

abstract = " In this article, the optical properties of thin films of higher manganese silicide (HMS) systems, MnSi γ and (Mn,Fe)Si γ , were investigated. Band structure calculations were performed using the Mn 11 Si 19 and (Mn 31/44 Fe 13/44 ) 11 Si 19 crystal structure models of HMS to predict the conduction types and band gaps of MnSi γ and Mn 0.7 Fe 0.3 Si γ , respectively. Using a pulsed laser deposition method, p-type MnSi γ and n-type Mn 0.7 Fe 0.3 Si γ thin films with a-axis orientation were grown on R-sapphire substrates. The measured direct band gaps were 0.81(1) eV for the MnSi γ thin film and 0.83(2) eV for the Mn 0.7 Fe 0.3 Si γ thin film. These results demonstrate the potential of (Mn,Fe)Si γ -based near-infrared absorption solar cells. ",

keywords = "Electronic structure, Epitaxial growth, Fe substitution, Higher manganese silicide, Optical absorption, Pulsed laser deposition",

author = "Kei Hayashi and Kentaro Ishii and Chihiro Kawasaki and Ryosuke Honda and Yuzuru Miyazaki",

note = "Funding Information: This work was partly supported by JSPS KAKENHI [grant number 17K18971 ]. Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

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AU - Hayashi, Kei

AU - Ishii, Kentaro

AU - Kawasaki, Chihiro

AU - Honda, Ryosuke

AU - Miyazaki, Yuzuru

PY - 2018/11/15

Y1 - 2018/11/15

N2 - In this article, the optical properties of thin films of higher manganese silicide (HMS) systems, MnSi γ and (Mn,Fe)Si γ , were investigated. Band structure calculations were performed using the Mn 11 Si 19 and (Mn 31/44 Fe 13/44 ) 11 Si 19 crystal structure models of HMS to predict the conduction types and band gaps of MnSi γ and Mn 0.7 Fe 0.3 Si γ , respectively. Using a pulsed laser deposition method, p-type MnSi γ and n-type Mn 0.7 Fe 0.3 Si γ thin films with a-axis orientation were grown on R-sapphire substrates. The measured direct band gaps were 0.81(1) eV for the MnSi γ thin film and 0.83(2) eV for the Mn 0.7 Fe 0.3 Si γ thin film. These results demonstrate the potential of (Mn,Fe)Si γ -based near-infrared absorption solar cells.

AB - In this article, the optical properties of thin films of higher manganese silicide (HMS) systems, MnSi γ and (Mn,Fe)Si γ , were investigated. Band structure calculations were performed using the Mn 11 Si 19 and (Mn 31/44 Fe 13/44 ) 11 Si 19 crystal structure models of HMS to predict the conduction types and band gaps of MnSi γ and Mn 0.7 Fe 0.3 Si γ , respectively. Using a pulsed laser deposition method, p-type MnSi γ and n-type Mn 0.7 Fe 0.3 Si γ thin films with a-axis orientation were grown on R-sapphire substrates. The measured direct band gaps were 0.81(1) eV for the MnSi γ thin film and 0.83(2) eV for the Mn 0.7 Fe 0.3 Si γ thin film. These results demonstrate the potential of (Mn,Fe)Si γ -based near-infrared absorption solar cells.

KW - Electronic structure

KW - Epitaxial growth

KW - Fe substitution

KW - Higher manganese silicide

KW - Optical absorption

KW - Pulsed laser deposition

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