2012 Fiscal Year Final Research Report
Preparation and photovoltaic application of oxide thin films withlow defect concentration by aqueous electrochemical process
| Project/Area Number |
22550164
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional materials/Devices
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
ASHIDA Atsushi 大阪府立大学, 大学院・工学研究科, 准教授 (60231908)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 結晶成長 / 高効率太陽光発電材料・素子 / 格子欠陥 / セラミックス / 新エネルギー |
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| Research Abstract |
ZnO/Cu2O solar cell fabricated by aqueous process is safe, secure, low cost and environment-friendly . In this study, thin films of ZnO and Cu2O were deposited by the electrochemical process. By evaluation and improvement of the nucleation and initial growth of ZnO, dense and continuous thin films are obtained with high reproducibility . Dependence of the lattice constant of Cu2O on the concentrations of oxygen sources, hydroxyl and dissolved oxygen in the electrolytes, were also evaluated. It is known that he lattice constant is influenced by the concentration of Cu vacancy which is an origin of the carrier. The results suggest that the carrier density of Cu2O films can be controlled by changing the concentration of oxygen sources.
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