Photovoltaic cell comprising carbon nanotubes formed by electrophoretic deposition and method for fabricating the same
First Claim
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1. A photovoltaic cell comprising:
- a transparent electrode including a conductive material coated on a substrate;
a semiconductor layer formed on the transparent electrode;
a carbon nanotube layer formed on the semiconductor layer;
a dye adsorbed on a surface of the semiconductor layer;
a counter electrode arranged opposite to the transparent electrode; and
an electrolyte filled within a space formed between the transparent electrode and the counter electrode.
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Abstract
A photovoltaic cell includes carbon nanotubes formed by electrophoretic deposition. A separate carbon nanotube layer is stacked on a semiconductor layer by electrophoretic deposition, or a mixed layer of carbon nanotubes and a constituent material of a semiconductor layer is formed by electrophoretic deposition, thereby preventing damage to the carbon nanotubes. A method for fabricating the photovoltaic cell is also provided. Since superior electrical conductivity of the carbon nanotubes is maintained unchanged, the photovoltaic cell exhibits improved electron transfer performance and inhibits accumulation of electrons and occurrence of recombination reactions.
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Citations
24 Claims
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1. A photovoltaic cell comprising:
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a transparent electrode including a conductive material coated on a substrate;
a semiconductor layer formed on the transparent electrode;
a carbon nanotube layer formed on the semiconductor layer;
a dye adsorbed on a surface of the semiconductor layer;
a counter electrode arranged opposite to the transparent electrode; and
an electrolyte filled within a space formed between the transparent electrode and the counter electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for fabricating a photovoltaic cell comprising:
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(a) forming a semiconductor layer on one surface of a transparent conductive electrode;
(b) forming a carbon nanotube layer on the semiconductor layer by electrophoretic deposition;
(c) adsorbing a dye on a surface of the semiconductor layer; and
(d) arranging a counter electrode so as to face the transparent conductive electrode and filling an electrolyte between the transparent conductive electrode and the counter electrode. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method for fabricating a photovoltaic cell comprising:
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(a) forming a mixed layer of carbon nanotubes and a constituent material of a semiconductor layer on one surface of a transparent conductive electrode by electrophoretic deposition;
(b) adsorbing a dye on a surface of the constituent material; and
(c) arranging a counter electrode so as to face the transparent conductive electrode and filling an electrolyte between the transparent conductive electrode and the counter electrode. - View Dependent Claims (19, 20)
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21. A method for fabricating a photovoltaic cell comprising:
forming carbon nanotubes within the photovoltaic cell by electrophoretic deposition. - View Dependent Claims (22, 23, 24)
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