Abstract
Saturated solution of dicyandiamide in acetonitrile was selected as the electrolyte in an attempt to deposit carbon nitride films onto glass substrates coated with indium tin oxide (ITO-coated glass). The result of X-ray photoelectron spectroscopy (XPS) showed that the maximum value of the N/C atomic ratio in the films was 1.22, which was quite close to the stoichiometric value of C3N4. Fourier transform infrared (FTIR) spectroscopy supported the existence of C-N, C=N covalent bonds. Optical band gap Eopt of CNx films determined by Tauc's relation was wide, and the Eopt of the sample obtained at 50°C, 1250 V was 2.32 eV. It was found that carbon nitride films of high nitrogen content could be obtained under the conditions of voltages from 1100 V to 1300 V and temperatures from 30°C to 50°C.
Original language | English |
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Pages (from-to) | 86-89 |
Number of pages | 4 |
Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
Volume | 24 |
Issue number | 1 |
Publication status | Published - Jan 2004 |
Keywords
- Carbon nitride
- Electrodeposition
- Optical band gap