Apparatus for generating electrical energy and method for manufacturing the same
View Patent ↗An apparatus for generating electrical energy may include; a first electrode, a second electrode spaced apart from the first electrode, the second electrode having a substantially planar flat plate shape, a conductor which electrically connects the first and second electrodes, and a nanowire disposed on the first electrode, the nanowire including a deformable piezoelectric material, wherein a Schottky contact is formed between the nanowire and the second electrode as the nanowires is deformed.
1. An apparatus for generating electrical energy comprising:
a first electrode;
a second electrode spaced apart from the first electrode, the second electrode having a substantially planar flat plate shape;
a conductor which electrically connects the first and second electrodes;
a nanowire disposed on the first electrode, the nanowire including a deformable piezoelectric material; and
first and second substrates connected to the first and second electrodes, respectively,
wherein a Schottky contact is formed between the nanowire and the second electrode as the nanowire is deformed.
2. The apparatus according to claim 1 , wherein
the nanowire includes an n-type semiconductor material having a first work function,
the second electrode includes a material having a second work function, and
the second work function is greater than the first work function.
3. The apparatus according to claim 1 , wherein
the nanowire includes a p-type semiconductor material having a first work function,
the second electrode includes a material having a second work function, and
the first work function is greater than the second work function.
4. The apparatus according to claim 1 , wherein
at least one of the first and second electrodes is a flexible electrode, and
the nanowire deforms as a distance between the first and second electrodes decreases.
5. The apparatus according to claim 1 , wherein at least one of the first and second electrodes is a transparent electrode.
6. The apparatus according to claim 1 , wherein at least one of the first and second substrates is made of a flexible material.
7. The apparatus according to claim 6 , wherein at least one of the first and second substrates is made of a transparent material.
8. The apparatus according to claim 1 , wherein
the first electrode includes a plurality of first electrodes,
the second electrode includes a plurality of second electrodes,
each of the plurality of the first electrodes are spaced apart from each other and extend in one direction, and
each of the plurality of the second electrodes are spaced apart from each other and extend in a direction substantially perpendicular to the one direction.
9. The apparatus according to claim 1 , further comprising:
an elastic material disposed between the first and second electrodes,
wherein a first distance between the first electrode and a top surface of the elastic material is equal to or shorter than a second distance between the first electrode and a top surface of the nanowire.
10. The apparatus according to claim 1 , wherein the first and second electrodes comprise at least one selected from the group consisting of indium tin oxide, carbon nanotubes, a conductive polymer, nanofibers, a nanocomposite, a gold-palladium (Au—Pd) alloy, gold (Au), palladium (Pd), platinum (Pt), ruthenium (Ru) and combinations thereof.
11. The apparatus according to claim 1 , wherein the nanowire comprises at least one selected from the group consisting of zinc oxide, lead zirconate titanate, barium titanate and combinations thereof.
12. The apparatus according to claim 1 , wherein the first electrode has a substantially planar flat plate shape.