# US 8,785,914 B2 · Piezoelectric nanowire structure and electronic device including the same

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- Number: US 8,785,914 B2
- Document ID: US8785914B2
- Status: Granted
- Kind: B2
- Application number: 12/872,304
- Filed: 2010-08-31
- Published: 2011-05-05
- Granted: 2014-07-22
- Earliest claimed: 2009-10-30
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Duk-Hyun Choi; Jae-Young Choi
- Inventors: Duk-Hyun Choi; Jae-Young Choi
- Web page: https://patentgrep.com/patent/US8785914B2

## CPC

- H10D 62/118: {Nanostructure semiconductor bodies}
- B82Y 10/00: Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
- H02N 2/18: producing electrical output from mechanical input, e.g. generators (for measurement devices G01)
- H10D 62/122: {oriented at angles to substrates, e.g. perpendicular to substrates}
- H10N 30/30: with mechanical input and electrical output, e.g. functioning as generators or sensors
- H10N 30/852: {Composite materials, e.g. having 1-3 or 2-2 type connectivity}
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- H02N: ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H10N: ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR

## Abstract

A piezoelectric nanowire structure includes a base substrate, a plurality of piezoelectric nanowires disposed on the base substrate, and a piezoelectric organic material layer disposed on the base substrate and covering the plurality of piezoelectric nanowires.

## Claims

### Claim 1

An electronic device comprising:
a first electrode and a second electrode spaced apart from each other;
a plurality of piezoelectric nanowires disposed on the first electrode; and
a piezoelectric organic material layer disposed between the second electrode and the plurality of piezoelectric nanowires, wherein the piezoelectric organic material layer comprises a composite material including an organic material, the organic material including one of polyvinylidene fluoride (“PVDF”), poly(3-hexylthiophene) (P3HT), polyaniline, polypyrrole, poly(p-phenylene vinylene) (“PPV”), polyvinylene, polyacetylene, polythiophene, derivatives thereof, and combinations thereof,
wherein
the piezoelectric nanowires comprise an n-type semiconductor, and
the piezoelectric organic material layer comprises a p-type organic semiconductor generating electron-hole excitons by adsorbing light.

### Claim 2 (depends on 1)

The electronic device of claim 1, wherein at least one of the first electrode and the second electrode has flexibility and is deformable by an applied pressure.

### Claim 3 (depends on 2)

The electronic device of claim 2, further comprising a first substrate contacting the first electrode, and a second substrate contacting the second electrode,
wherein at least one of the first substrate and the second substrate has flexibility and is deformable by the applied pressure.

### Claim 4 (depends on 1)

The electronic device of claim 1, wherein at least one of the first electrode and the second electrode comprises a transparent material.

### Claim 5 (depends on 1)

The electronic device of claim 1, wherein the nanowires comprise zinc oxide (ZnO), lead zirconate titanate (“PZT”), barium titanate (BaTiO3), lead titanate (PbTiO3), aluminum nitride (“AlN”), gallium nitride (“GaN”), or silicon carbide (“SiC”).

### Claim 6 (depends on 1)

The electronic device of claim 1, wherein
the first electrode comprises a plurality of first sub-electrodes,
the second electrode comprises a plurality of second sub-electrodes,
the plurality of first sub-electrodes is spaced apart from each other in a second direction, and each of the first sub-electrodes extends along a first direction, and
the plurality of second sub-electrodes is spaced apart from each other in the first direction, and each of the second sub-electrodes extends along the second direction which is perpendicular to the first direction.

### Claim 7 (depends on 1)

The electronic device of claim 1, further comprising
a connecting part electrically connecting the first electrode and the second electrode, and
a storing part electrically connected to the connecting part.

### Claim 8 (depends on 1)

The electronic device of claim 1, further comprising
a connecting part electrically connecting the first electrode and the second electrode, and
a DC converter electrically connected to the connecting part.

### Claim 9 (depends on 1)

The electronic device of claim 1, wherein the first electrode includes the same material as in the piezoelectric nanowires.

### Claim 10

An electronic device comprising:
a first electrode and a second electrode spaced apart from each other;
a plurality of piezoelectric nanowires disposed on the first electrode; and
a piezoelectric organic material layer disposed between the second electrode and the plurality of piezoelectric nanowires,
wherein
the piezoelectric nanowires comprise an n-type semiconductor and have an etched surface, and
the piezoelectric organic material layer comprises a p-type organic semiconductor generating electron-hole excitons by adsorbing light.

### Claim 11

An electronic device comprising:
a first electrode and a second electrode spaced apart from each other;
a plurality of piezoelectric nanowires disposed on the first electrode; and
a piezoelectric organic material layer disposed between the second electrode and the plurality of piezoelectric nanowires,
wherein
the piezoelectric nanowires comprise an n-type semiconductor,
the piezoelectric organic material layer comprises a p-type organic semiconductor generating electron-hole excitons by adsorbing light, and
wherein the piezoelectric organic material layer is disposed in an entire area between adjacent protruding portions of piezoelectric nanowires.