Chin. Phys. Lett.  2003, Vol. 20 Issue (3): 414-416    DOI:
Original Articles |
Growth of Structured Non-crystalline Boron-Oxygen-Nitrogen Films and Measurement of Their Electrical Properties
CHEN Guang-Chao1;LU Fan-Xiu1;J. -H. Boo2
1School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083 2Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
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CHEN Guang-Chao, LU Fan-Xiu, J. -H. Boo 2003 Chin. Phys. Lett. 20 414-416
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Abstract The boron-oxygen-nitrogen (BON) films have been grown on Si wafer by the low-frequency rf-plasma-enhanced metal-organic chemical vapor deposition method. The homogeneous film structure of completely amorphous BON is first fabricated on a low-temperature-made buffer at 500°C with N2 plasma and is observed with a high-resolution electron microscope by the transmission electron diffraction. The results show that the interfaces among substrate/buffer/film are clear and straight in the structured film. A heterogeneous film containing nano-sized crystalline particles is also grown by a routine growth procedure as a referential structure. The C-V characteristic is measured on both the amorphous and crystal-containing films by using the metal-oxide-semiconductor structure. The dielectric constants of the films are, therefore, deduced to be 5.9 and 10.5 for the amorphous and crystal-containing films, respectively. The C-V results also indicate that more trapped charges exist in the amorphous film. The binding energy of the B, O, and N atoms in the amorphous film is higher than that in the crystal-containing one, and the N-content in the latter is found to be higher than that in the former by x-ray photo-electron spectroscopy. The different electrical property of the films is thought to originate from the energy state of the covalent electrons.
Keywords: 75.70.Kw      52.20.Dq      77.84.Nh     
Published: 01 March 2003
PACS:  75.70.Kw (Domain structure (including magnetic bubbles and vortices))  
  52.20.Dq (Particle orbits)  
  77.84.Nh (Liquids, emulsions, and suspensions; liquid crystals)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2003/V20/I3/0414
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