Epitaxial Growth of Three-Dimensionally Mesostructured Single-Crystalline Cu2O via Templated Electrodeposition

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• 作者：Jinwoo Kim ; Ha Seong Kim ; Jun Hee Choi ; Hyeongtag Jeon ; Yohan Yoon ; Jinyun Liu ; Jea-Gun Park ; Paul V. Braun
• 刊名：Chemistry of Materials
• 出版年：2014
• 出版时间：December 23, 2014
• 年：2014
• 卷：26
• 期：24
• 页码：7051-7058
• 全文大小：476K
• ISSN：1520-5002

文摘

Significant efforts have been made over the past few decades to realize functional three-dimensional photonic crystal devices including zero-threshold lasers, waveguides, light-emitting diodes (LEDs), and solar cells; however, progress has been limited because of difficulties in creating three-dimensional photonic crystals from single-crystal materials. Most have been formed from polycrystalline materials and thus have generally exhibited poor electronic properties. Realization of materials containing complex three-dimensional mesostructures, in single-crystal form, remains a significant challenge. Here, we demonstrate the epitaxial growth of three-dimensionally mesostructured Cu₂O by bottom-up electrodeposition through a 3D silica colloidal template. Not only is the templated Cu₂O single crystal, but when the electrodeposition continues past the colloidal template, the crystallinity of the overlying solid Cu₂O appears to be improved because the template blocks threading dislocations, resulting in substantial reductions in the dislocation density of the overlying solid Cu₂O.