Ultra-sharp α-Fe2O3 nanoflakes: Growth mechanism and field-emission

Zhe Zheng; Yunzhong Chen; Zexiang Shen; Jan Ma; Chorng Haur Sow; Wei Huang; Ting Yu

doi:10.1007/s00339-007-4180-9

Ultra-sharp α-Fe₂O₃ nanoflakes: Growth mechanism and field-emission

Zhe Zheng, Yunzhong Chen, Zexiang Shen, Jan Ma, Chorng Haur Sow, Wei Huang, Ting Yu

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

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Abstract

We report the synthesis of single-crystalline α-Fe₂O ₃ nanoflakes from a simple Fe-air reaction within the temperatures range of 260-400 °C. The nanoflakes synthesized at the lowest temperature (260 °C) in this work show an ultra-sharp morphology: 5-10 nm in thickness, 1-2 μm in length, 20 nm in base-width and around 5 nm at the tips; successfully demonstrate the promising electron field emission properties of a large-scaled α-Fe₂O₃ nanostructure film and exhibit the potential applications as future field-emission (FE) electron sources and displays (FEDs). The formation and growth of α-Fe₂O₃ nanostructures were discussed based on the surface diffusion mechanism.

Original language	English
Pages (from-to)	115-119
Number of pages	5
Journal	Applied Physics A: Materials Science and Processing
Volume	89
Issue number	1
DOIs	https://doi.org/10.1007/s00339-007-4180-9
State	Published - Oct 2007
Externally published	Yes

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abstract = "We report the synthesis of single-crystalline α-Fe2O 3 nanoflakes from a simple Fe-air reaction within the temperatures range of 260-400 °C. The nanoflakes synthesized at the lowest temperature (260 °C) in this work show an ultra-sharp morphology: 5-10 nm in thickness, 1-2 μm in length, 20 nm in base-width and around 5 nm at the tips; successfully demonstrate the promising electron field emission properties of a large-scaled α-Fe2O3 nanostructure film and exhibit the potential applications as future field-emission (FE) electron sources and displays (FEDs). The formation and growth of α-Fe2O3 nanostructures were discussed based on the surface diffusion mechanism.",

author = "Zhe Zheng and Yunzhong Chen and Zexiang Shen and Jan Ma and Sow, {Chorng Haur} and Wei Huang and Ting Yu",

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T1 - Ultra-sharp α-Fe2O3 nanoflakes

T2 - Growth mechanism and field-emission

AU - Zheng, Zhe

AU - Chen, Yunzhong

AU - Shen, Zexiang

AU - Ma, Jan

AU - Sow, Chorng Haur

AU - Huang, Wei

AU - Yu, Ting

PY - 2007/10

Y1 - 2007/10

N2 - We report the synthesis of single-crystalline α-Fe2O 3 nanoflakes from a simple Fe-air reaction within the temperatures range of 260-400 °C. The nanoflakes synthesized at the lowest temperature (260 °C) in this work show an ultra-sharp morphology: 5-10 nm in thickness, 1-2 μm in length, 20 nm in base-width and around 5 nm at the tips; successfully demonstrate the promising electron field emission properties of a large-scaled α-Fe2O3 nanostructure film and exhibit the potential applications as future field-emission (FE) electron sources and displays (FEDs). The formation and growth of α-Fe2O3 nanostructures were discussed based on the surface diffusion mechanism.

AB - We report the synthesis of single-crystalline α-Fe2O 3 nanoflakes from a simple Fe-air reaction within the temperatures range of 260-400 °C. The nanoflakes synthesized at the lowest temperature (260 °C) in this work show an ultra-sharp morphology: 5-10 nm in thickness, 1-2 μm in length, 20 nm in base-width and around 5 nm at the tips; successfully demonstrate the promising electron field emission properties of a large-scaled α-Fe2O3 nanostructure film and exhibit the potential applications as future field-emission (FE) electron sources and displays (FEDs). The formation and growth of α-Fe2O3 nanostructures were discussed based on the surface diffusion mechanism.

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JO - Applied Physics A: Materials Science and Processing

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Ultra-sharp α-Fe₂O₃ nanoflakes: Growth mechanism and field-emission

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