Rectifying and photovoltaic effects observed in mesoporous MCM-41 silica film on silicon |
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| Affiliation: | 1. School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, Jiangxi, PR China;2. Key Laboratory of Product Packaging and Logistics of Guangdong Higher Education Institutes, Jinan University, Zhuhai, Guangdong, PR China;3. State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi''an Jiaotong University, Xi''an, Shanxi 710049, PR China;4. Ningbo Institute of Technology, Zhejiang University, Ningbo, Zhejiang, PR China;1. Department of Civil Engineering, School of Environmental Engineering, Monash University, Melbourne, Australia;2. College of Environment and Chemical Engineering, Shanghai University of Electric Power, Shanghai, China;3. School of Energy and Environment, City University of Hong Kong, Hong Kong, China |
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| Abstract: | Oriented mesoporous MCM-41 silica films have been synthesized on single-crystalline silicon (111) wafers by the self-assembly deposition in ammonia medium. For the first time, the I–V curves and surface photovoltaic spectra of the films has been investigated. The I–V curve of the as-synthesized film exhibits an excellent rectified ratio of σ+/σ−=3×103 (where σ+, σ− are the forward electrical conductivity and reverse electrical conductivity, respectively). The results of photovoltaic measurements indicate that the as-synthesized film possesses a significant surface photovoltaic increase. |
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