Ultra-sharp alpha-Fe2O3 nanoflakes: growth mechanism and field-emission

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

来源：Applied Physics A, 2007, 89(1): 115-119.

DOI：10.1007/s00339-007-4180-9

We report the synthesis of single-crystalline alpha-Fe2O3 nanoflakes from a simple Fe-air reaction within the temperatures range of 260-400 degrees C. The nanoflakes synthesized at the lowest temperature (260 degrees C) in this work show an ultra-sharp morphology: 5-10 nm in thickness, 1-2 mu m 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 alpha-Fe2O3 nanostructure film and exhibit the potential applications as future field-emission (FE) electron sources and displays (FEDs). The formation and growth of alpha-Fe2O3 nanostructures were discussed based on the surface diffusion mechanism.

• 出版日期2007-10
• 单位复旦大学; 南阳理工学院