Title Page
Contents
초록 8
ABSTRACT 9
CHAPTER Ⅰ. INTRODUCTION 11
A. Copper(II) oxide (CuO) photoelectrode 14
B. Spin coating method 15
CHAPTER Ⅱ. OBJECTIVE 16
CHAPTER Ⅲ. EXPERIMENTAL DETAIL 19
CHAPTER Ⅳ. RESULTS AND DISCUSSIONS 21
CHAPTER Ⅴ. CONCLUSIONS 41
CHAPTER Ⅵ. REFERENCES 42
Figure 1. View of the hydrogen production technologies. 12
Figure 2. The hydrogen reduction process in photoelectrochemical water splitting cells. 13
Figure 3. Unit cell of copper(II) oxide 14
Figure 4. Scheme of the spin coating method. 15
Figure 5. Outline of the experimentation process. 18
Figure 6. PEC properties of CuO photoelectrode various Li doping concentration: (a) current density vs. potential (b) photocurrent density at... 30
Figure 7. Comparison of XRD data for Li 2 at% and 10 at% CuO photoelectrode : (a) XRD spectra, (b), (c), and (d) present the XRD peak... 31
Figure 8. PEC properties of Li doped CuO photoelectrode various annealing temperature: (a) current density vs. potential (b) photocurrent density at... 32
Figure 9. XRD spectra of bare CuO and Li doped CuO photoelectrode with and without annealing. 33
Figure 10. PEC properties of Li doped CuO photoelectrode various spin coating deposition cycle: (a) current density vs. potential, (b) photocurrent... 34
Figure 11. Cross-sectional FE-SEM images of the bare CuO and Li doped CuO photoelectrode. 35
Figure 12. UV-vis results of Li doped CuO photoelectrode various spin coating deposition cycle: (a) thickness, (b) absorbance, (c) plots of (αhν)² vs.... 36
Figure 13. XRD results of Li doped CuO photoelectrode various spin coating deposition cycle: (a) XRD spectra and (b) peak intensity. 37
Figure 14. XRD results of Li doped CuO photoelectrode various spin coating deposition cycle: (a) FWHM, (b) change in FWHM with and without Li... 38
Figure 15. EIS data of Li doped CuO photoelectrode various spin coating deposition cycle: (a) Mott-Schottky plots, (b) flat-band potential, (c) Nyquist... 39
Figure 16. Sample image of the Li doped CuO photoelectrode after photocurrent density measurement. 40