Electrochemical Properties of Boron-doped Polycrystalline Diamond Films

Chem. J. Chinese Universities

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Electrochemical Properties of Boron-doped Polycrystalline Diamond Films

LI Chun-Yan¹, PAN Kai², LU Xian-Yi¹, LI Ming-Ji¹, LIU Zhao-Yue², BAI Yu-Bai², LI Bo¹, JIN Zeng-Sun¹

1. National Key Laboratory of Super Hard Materials,
2. College of Chemistry, Jilin University, Changchun 130023, China

Received:2005-12-20 Revised:1900-01-01 Online:2006-11-10 Published:2006-11-10
Contact: JIN Zeng-Sun

Abstract

Abstract: Boron-doped diamond films were deposited by EACVD(Electron Assisted Chemical Vapor Deposition) method in this paper. SEM, Raman spectroscopy and Hall effect measurements were employed to analyze the morphology, the growth mechanism, the carrier concentration and the electrical conductivity of the samples. The results show that the samples are high-quality polycrystalline diamond films composed of micrometer-sized grains. The carrier concentration and the resistivity of the samples are 4.88×10²⁰ cm^-3 and 0.03 Ω·cm, respectively. These diamond films were used as the electrochemical electrodes, and cyclic voltammetry was used to measure the current-voltage curves of the diamond electrodes in KCl solution, K₄Fe(CN)₆ solution, and CySH solution, respectively. The results show that these diamond film electrodes have a wide electrochemical window of about 3.7 V and a low background current close to zero in the aqua solution, and they have a high sensitivity and good stability in the biopreparates detection experiment, which makes boron-doped diamond film being an excellent material of electrochemical electrode.

Key words: Boron-doped diamond film, Electrochemical electrodes, Cyclic voltammetry, Biopreparate detection

CLC Number:

O646
O613.71

TrendMD:

LI Chun-Yan¹, PAN Kai², LU Xian-Yi¹, LI Ming-Ji¹, LIU Zhao-Yue², BAI Yu-Bai², LI Bo¹, JIN Zeng-Sun¹. Electrochemical Properties of Boron-doped Polycrystalline Diamond Films[J]. Chem. J. Chinese Universities, doi: .

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Electrochemical Properties of Boron-doped Polycrystalline Diamond Films

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