A simplified chemical synthesis of Cu2O films with periodic pattern transfer
| Autor: | Jin-Yi Chen, Ying Yu, Mingqiang Qiu, Liangbin Xiong, Hongxia Yu, Gaiyan Yang |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Thiosulfate
Stereochemistry Metals and Alloys chemistry.chemical_element Surfaces and Interfaces Photoelectric effect Chemical synthesis Copper Surfaces Coatings and Films Electronic Optical and Magnetic Materials Metal chemistry.chemical_compound chemistry Chemical engineering visual_art Materials Chemistry visual_art.visual_art_medium Deposition (phase transition) Irradiation Chemical bath deposition |
| Zdroj: | Thin Solid Films. 518:6738-6745 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2010.05.117 |
| Popis: | A simple approach is discovered for the synthesis of Cu 2 O films with periodic dimension transfer from sphere, rod to cone by chemical bath deposition technique. This two-step process consists of first immersing substrates into a copper thiosulfate solution followed by a subsequent dip in NaOH. The size and morphology of Cu 2 O films can be controlled by tuning the concentration of NaOH solution and adjusting immersion cycles (deposition times). Three-dimensional sphere, one-dimensional rod and three-dimensional cone Cu 2 O films can be periodically formed with the increase of the immersion cycles when the concentration of NaOH solution is less than 1.2 M and the immersion cycles are more than 10. The growth mechanism for such periodic pattern transfer of Cu 2 O films has been investigated and proposed. The photovoltaic characteristics of Cu 2 O films demonstrate that rod-like and cone-like Cu 2 O films have better photoelectric property than sphere-like Cu 2 O film under visible-light irradiation. This facile method may be used for the synthesis of other metal oxides films with special structures and good properties. |
| Databáze: | OpenAIRE |
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