Circular photonic crystal structure, light emitting diode device and photoelectric conversion device
First Claim
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1. A photoelectric conversion device, comprising:
- a photoelectric conversion part suitable for emitting or receiving a light;
a first medium located in a periphery of the photoelectric conversion part, wherein the light passes through the first medium and a second medium outside the first medium, and the first medium and the second medium have different refractive indices; and
a circular photonic crystal structure disposed at a junction surface between the first medium and the second medium, wherein the circular photonic crystal structure comprises a plurality of openings, one of the openings is located at a center of the circular photonic crystal structure and encircled by a plurality of concentric circles comprises the other openings.
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Abstract
A method applying a circular photonic crystal structure to improve optical properties of a photoelectric conversion device such as a light emitting diode device, an organic light emitting diode device or a solar cell is provided, wherein the circular photonic crystal structure is configured on a junction surface between two different mediums where passes a light emitted or received by the photoelectric conversion device. The circular photonic crystal structure provides isotropic photonic band gap which conduces high light extraction efficiency.
6 Citations
22 Claims
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1. A photoelectric conversion device, comprising:
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a photoelectric conversion part suitable for emitting or receiving a light; a first medium located in a periphery of the photoelectric conversion part, wherein the light passes through the first medium and a second medium outside the first medium, and the first medium and the second medium have different refractive indices; and a circular photonic crystal structure disposed at a junction surface between the first medium and the second medium, wherein the circular photonic crystal structure comprises a plurality of openings, one of the openings is located at a center of the circular photonic crystal structure and encircled by a plurality of concentric circles comprises the other openings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A light emitting diode device, comprising:
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a substrate; a first-type doped semiconductor layer disposed on the substrate; a second-type doped semiconductor layer disposed on the first-type doped semiconductor layer; an active region located between the first-type doped semiconductor layer and the second-type doped semiconductor layer; a first electrode disposed on the first-type doped semiconductor layer; a second electrode disposed on the second-type doped semiconductor layer; and a circular photonic crystal structure disposed on a top surface of the second-type doped semiconductor layer or between the first-type doped semiconductor layer and the substrate, wherein the circular photonic crystal structure comprises a plurality of openings, one of the openings is located at a center of the circular photonic crystal structure and encircled by a plurality of concentric circles comprises the other openings. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification