Zinc oxide with acicular structure, process for its production, and photoelectric conversion device
a technology of acicular structure and zinc oxide, which is applied in the direction of sustainable manufacturing/processing, final product manufacturing, and treatment with only plural parallel stages
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example 1
[0115] In this Example, an instance in which zinc oxide acicular crystals are produced on a conductive substrate by electrodeposition is described with reference to FIG. 4B.
[0116] A conductive-glass substrate (coated with F-doped SnO2, 10 Ω / square) as the working electrode was prepared for use. As the electrolytic conditions of the prepared samples, an electrolytic solution containing 0.01 mol / L (mole per liter) of zinc nitrate in a water:ethanol 9:1 mixed solvent was electrodeposited by −1.2V for 5,000 seconds at 85° C. After the electrodeposition, zinc oxide acicular crystals (zinc oxide acicular structure 17) had grown on the electrode 15 surface as shown in FIG. 4B. These zinc oxide acicular crystals were about 200 nm in diameter and about 3 μm in length.
[0117] As a comparative example, the same electrolytic solution as the above except that the ethanol was removed was also prepared, and zinc oxide crystals were grown in the same way.
[0118] As a result of measurement, the zin...
example 2
[0120] In this Example, an instance in which zinc oxide acicular crystals are produced on a conductive substrate by electrodeposition is described with reference to FIG. 4A.
[0121] A platinum substrate was prepared for use. This substrate was set as the working electrode and was immersed in an electrolytic solution prepared by dissolving 0.01 mol / L of zinc nitrate in a water:acetonitrile 9:1 mixed solvent, and this electrolytic solution was heated to 85° C. Then, a potential of −1.0 V was applied for 5,000 seconds to effect electrodeposition. After the electrodeposition, the substrate was observed to find that zinc oxide acicular crystals (zinc oxide acicular structure 17) had grown on the substrate 41 surface as shown in FIG. 4A. These zinc oxide acicular crystals were about 300 nm in diameter and about 4 μm in length.
[0122] As a comparative example, the same electrolytic solution as the above except that the acetonitrile was removed was also prepared, and zinc oxide crystals were...
example 3
[0124] In this Example, an instance in which zinc oxide acicular crystals are produced on a conductive substrate by electrodeposition is described with reference to FIG. 4B.
[0125] A conductive-glass substrate (coated with F-doped SnO2, 10 Ω / square) was prepared for use. This substrate was set as the working electrode and was immersed in an electrolytic solution prepared by dissolving 0.01 mol / L of zinc nitrate in a water:n-hexanol 99:1 mixed solvent, and this electrolytic solution was heated to 85° C. Then, a potential of −1.3 V was applied for 5,000 seconds to effect electrodeposition. After the electrodeposition, the substrate was observed to find that zinc oxide acicular crystals (zinc oxide acicular structure 17) had grown on the electrode 15 surface as shown in FIG. 4B. These zinc oxide acicular crystals were about 500 nm in diameter and about 5 μm in length.
[0126] As a comparative example, the same electrolytic solution as the above except that the n-hexanol was removed was ...
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Abstract
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