The influence of polarity of electrodeposited Cu2O thin films on the photoelectrochemical performance
- Title
- The influence of polarity of electrodeposited Cu2O thin films on the photoelectrochemical performance
- Author
- 유봉영
- Keywords
- WATER REDUCTION; PHOTOCATHODE; CUPROUS-OXIDE; SOLAR-CELL; SHAPE CONTROL
- Issue Date
- 2014-08
- Publisher
- IOP Publishing Ltd
- Citation
- Japanese Journal of Applied Physics, v. 53, NO. 8, article no. 08NJ01, Page. 1-4
- Abstract
- Both polar and non-polar Cu2O thin films were electrodeposited in electrolytes of different pH, and their photoelectrochemical activities in water were analyzed. The surface morphology of these tailored-polarity Cu2O films was analyzed by field emission scanning electron microscope (FE-SEM) and X-ray diffraction (XRD), and their photoactivity was characterized through photoluminescence and Mott-Schottky measurement of the defect structure, diffusion length, carrier concentration, and charge separation. Through this, the tetrahedral surface morphology of a polar Cu2O thin film was found to exhibit a higher photocurrent in the visible spectrum than the pyramidal surface morphology of a non-polar Cu2O film. Furthermore, the higher flat-band potential and carrier concentration identified in the polar Cu2O by Mott-Schottky analysis was found to result in a higher charge separation. (C) 2014 The Japan Society of Applied Physics
- URI
- https://iopscience.iop.org/article/10.7567/JJAP.53.08NJ01https://repository.hanyang.ac.kr/handle/20.500.11754/180942
- ISSN
- 0021-4922;1347-4065
- DOI
- 10.7567/JJAP.53.08NJ01
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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