Micro/nanostructure PN junction diode array thin-film solar cell and method for fabricating the same
First Claim
1. A micro/nanostructure PN junction diode array thin-film solar cell comprisinga first transparent substrate;
- a thin-film N-type semiconductor joined to said first transparent substrate;
a semiconductor micro/nanostructure array with one side thereof joined to said thin-film N-type semiconductor;
a thin-film P-type semiconductor joined to another side of said semiconductor micro/nanostructure array; and
a second transparent substrate joined to said thin-film P-type semiconductor.
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Abstract
The present invention discloses a micro/nanostructure PN junction diode array thin-film solar cell and a method for fabricating the same, wherein a microstructure or sub-microstructure PN junction diode array, such as a nanowire array or a nanocolumns array, is transferred from a source-material wafer to two pieces of transparent substrates, which are respectively corresponding to two electric conduction types, to fabricate a thin-film solar cell. In the present invention, the micro/nanostructure PN junction diode array has advantages of a fine-quality crystalline semiconductor, and the semiconductor substrate can be reused to save a lot of semiconductor material. Besides, the present invention can make the best of sunlight energy via stacking up the solar cells made of different types of semiconductor materials to absorb different wavebands of the sunlight spectrum.
7 Citations
11 Claims
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1. A micro/nanostructure PN junction diode array thin-film solar cell comprising
a first transparent substrate; -
a thin-film N-type semiconductor joined to said first transparent substrate; a semiconductor micro/nanostructure array with one side thereof joined to said thin-film N-type semiconductor; a thin-film P-type semiconductor joined to another side of said semiconductor micro/nanostructure array; and a second transparent substrate joined to said thin-film P-type semiconductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A micro/nanostructure PN junction diode array thin-film solar cell, comprising:
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a thin-film N-type semiconductor having a first side and a second side; a thin-film P-type semiconductor having a first side and a second side; a semiconductor micro/nanostructure array disposed between said first side of said thin-film N-type semiconductor and said first side of said thin-film P-type semiconductor; a first electrode disposed between said second side of said thin-film N-type semiconductor and a first transparent substrate; and a second electrode disposed between said second side of said thin-film P-type semiconductor and a second transparent substrate.
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Specification