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Electrochemical synthesis of cuprous oxide on highly conducting metal micro-pillar arrays for water splitting
- Authors
- Yoon, Sanghwa; Lim, Jae-Hong; Yoo, Bongyoung
- Issue Date
- Aug-2016
- Publisher
- Elsevier BV
- Keywords
- Three-dimensional (3D) metal/cuprous oxide; Micro-pillar arrays; Electroless deposition; Electrochemical deposition; Water splitting
- Citation
- Journal of Alloys and Compounds, v.677, pp.66 - 71
- Indexed
- SCIE
SCOPUS
- Journal Title
- Journal of Alloys and Compounds
- Volume
- 677
- Start Page
- 66
- End Page
- 71
- ISSN
- 0925-8388
- Abstract
- Three-dimensional (3D) metal/cuprous oxide (Cu2O) micro-pillar arrays were fabricated by electroless deposition of Ni on Si micro-pillars followed by the electrochemical deposition of Cu2O on the metal micro-pillars. The metal micro-pillars with heights of 16 mm and diameters of 1-1.5 mm showed low reflectance and conductance values similar to Cu2O plates, indicating that the 3D metal/Cu2O micro-pillars are good current collectors. The photocurrent of the 3D metal/Cu2O micro-pillar arrays was more than twice that of the Cu2O plates. This high photocurrent for the 3D metal/Cu2O micro-pillar results from its large surface area, long optical absorption depth (micro-pillar length) and short carrier diffusion length (thin Cu2O absorber). (C) 2016 Elsevier B.V. All rights reserved.
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Related Researcher
- Yoo, Bong young
- ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)