Synthesis and Characterization of Magnesium-Alloyed Hematite Thin Films

Houwen Tang; M. A. Matin; Heli Wang; Mowafak Al-Jassim; John Turner; Yanfa Yan

doi:10.1007/s11664-012-2205-4

Synthesis and Characterization of Magnesium-Alloyed Hematite Thin Films

Houwen Tang, M. A. Matin, Heli Wang, Mowafak Al-Jassim, John Turner, Yanfa Yan

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

7 Scopus Citations

Abstract

We have synthesized pure and Mg-alloyed hematite thin films on F-doped, SnO ₂-coated glass substrates by radiofrequency magnetron cosputtering of iron oxide with and without MgO sources in mixed Ar/O ₂ and mixed N2/O ₂ ambient. We found that hematite films deposited in N2/O ₂ ambient exhibited much poorer crystallinity than those deposited in Ar/O ₂ ambient. We determined that Mg alloying led to increased crystallinity and bandgap. Furthermore, we found that Mg alloying inverted the type of conductivity of the thin films: pure hematite thin films exhibited n-type conductivity, whereas Mg-alloyed hematite thin films exhibited p-type conductivity.

Original language	American English
Pages (from-to)	3100-3106
Number of pages	7
Journal	Journal of Electronic Materials
Volume	41
Issue number	11
DOIs	https://doi.org/10.1007/s11664-012-2205-4 https://doi.org/10.1007/s11664-012-2205-4
State	Published - 2012

NREL Publication Number

NREL/JA-5200-53706

Keywords

Co-alloy
Hematite
Sputtering
Water splitting

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title = "Synthesis and Characterization of Magnesium-Alloyed Hematite Thin Films",

abstract = "We have synthesized pure and Mg-alloyed hematite thin films on F-doped, SnO 2-coated glass substrates by radiofrequency magnetron cosputtering of iron oxide with and without MgO sources in mixed Ar/O 2 and mixed N2/O 2 ambient. We found that hematite films deposited in N2/O 2 ambient exhibited much poorer crystallinity than those deposited in Ar/O 2 ambient. We determined that Mg alloying led to increased crystallinity and bandgap. Furthermore, we found that Mg alloying inverted the type of conductivity of the thin films: pure hematite thin films exhibited n-type conductivity, whereas Mg-alloyed hematite thin films exhibited p-type conductivity.",

keywords = "Co-alloy, Hematite, Sputtering, Water splitting",

author = "Houwen Tang and Matin, {M. A.} and Heli Wang and Mowafak Al-Jassim and John Turner and Yanfa Yan",

year = "2012",

doi = "10.1007/s11664-012-2205-4",

language = "American English",

volume = "41",

pages = "3100--3106",

journal = "Journal of Electronic Materials",

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TY - JOUR

T1 - Synthesis and Characterization of Magnesium-Alloyed Hematite Thin Films

AU - Tang, Houwen

AU - Matin, M. A.

AU - Wang, Heli

AU - Al-Jassim, Mowafak

AU - Turner, John

AU - Yan, Yanfa

PY - 2012

Y1 - 2012

N2 - We have synthesized pure and Mg-alloyed hematite thin films on F-doped, SnO 2-coated glass substrates by radiofrequency magnetron cosputtering of iron oxide with and without MgO sources in mixed Ar/O 2 and mixed N2/O 2 ambient. We found that hematite films deposited in N2/O 2 ambient exhibited much poorer crystallinity than those deposited in Ar/O 2 ambient. We determined that Mg alloying led to increased crystallinity and bandgap. Furthermore, we found that Mg alloying inverted the type of conductivity of the thin films: pure hematite thin films exhibited n-type conductivity, whereas Mg-alloyed hematite thin films exhibited p-type conductivity.

AB - We have synthesized pure and Mg-alloyed hematite thin films on F-doped, SnO 2-coated glass substrates by radiofrequency magnetron cosputtering of iron oxide with and without MgO sources in mixed Ar/O 2 and mixed N2/O 2 ambient. We found that hematite films deposited in N2/O 2 ambient exhibited much poorer crystallinity than those deposited in Ar/O 2 ambient. We determined that Mg alloying led to increased crystallinity and bandgap. Furthermore, we found that Mg alloying inverted the type of conductivity of the thin films: pure hematite thin films exhibited n-type conductivity, whereas Mg-alloyed hematite thin films exhibited p-type conductivity.

KW - Co-alloy

KW - Hematite

KW - Sputtering

KW - Water splitting

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U2 - 10.1007/s11664-012-2205-4

DO - 10.1007/s11664-012-2205-4

M3 - Article

AN - SCOPUS:84868561709

SN - 0361-5235

VL - 41

SP - 3100

EP - 3106

JO - Journal of Electronic Materials

JF - Journal of Electronic Materials

IS - 11

ER -

Synthesis and Characterization of Magnesium-Alloyed Hematite Thin Films

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