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Conduction SPP (surface plasmon polariton) heterogeneous integration solar battery

A solar cell and surface plasmon technology, applied in the field of solar cells, can solve problems such as high cost, low photoelectric conversion efficiency, and poor wide-spectrum response, and achieve the effects of reducing heat loss and improving photoelectric conversion efficiency

Active Publication Date: 2017-05-31
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Technical problem: The purpose of this invention is to solve the technical problems of existing solar cells such as low photoelectric conversion efficiency, poor wide-spectrum response, and high cost, and propose a conductive surface plasmon polariton heterogeneous integrated solar cell, and at the same time realize the battery Lower cost, improved open circuit voltage and short circuit current, wide-spectrum photoelectric response and high photoelectric conversion efficiency

Method used

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  • Conduction SPP (surface plasmon polariton) heterogeneous integration solar battery
  • Conduction SPP (surface plasmon polariton) heterogeneous integration solar battery

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Embodiment 1

[0026] designed as figure 1 The battery structure, nanoantenna structure and random metal waveguide structure such as figure 2 as shown in a. The transparent conductive film layer 1 is made of indium tin oxide (ITO) with a thickness of 50 nanometers. The nano antenna structure is a triangular pyramid structure, the material is gold, and the size is 20 nanometers. The random metal waveguide structure adopts a rectangular waveguide array, the material is gold, the diameter is 15 nanometers, and the thickness is 20 nanometers. The organic conductive material layer is made of poly-3,4-ethylenedioxythiophene-polystyrenesulfonic acid (PEDOT:PSS), with a thickness of 15 nanometers. The plasmonic light-trapping structure is made of silver, and the shape is a nano-disc with a size of 10 nanometers. The silicon substrate is a flat and smooth surface with a thickness of 20 microns. The back electrode is made of indium and has a thickness of 40 nanometers.

Embodiment 2

[0028] designed as figure 1 The battery structure, nanoantenna structure and random metal waveguide structure such as figure 2 as shown in b. The transparent conductive film layer 1 is made of indium tin oxide (ITO) and has a thickness of 80 nanometers. The nano antenna structure is a star structure, the material is silver, and the size is 35 nanometers. The random metal waveguide structure adopts a cylindrical waveguide array, the material is silver, the diameter is 20 nanometers, and the thickness is 40 nanometers. The organic conductive material layer is made of poly 3-hexylthiophene (P3HT) and has a thickness of 35 nanometers. The plasmonic light-trapping structure is made of palladium, in the shape of a hexagonal sheet, and the size is 15 nanometers. The silicon substrate is a flat and smooth surface with a thickness of 80 microns. The back electrode is made of aluminum and has a thickness of 50 meters.

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Abstract

The invention discloses a conduction SPP (surface plasmon polariton) heterogeneous integration solar battery. A heterogeneous junction formed by an organic conducting material and a silicon substrate is used as a sub battery of a visible light wave band; in addition, a plasmon light trapping structure is introduced into the preparation process of the battery; the efficient absorption of the battery on the visible light wave band is realized; a heterogeneous junction formed by the conduction SPP random metal waveguide and a silicon substrate is used as a sub battery in an infrared wave band; through the design of the dimension and the appearance of the random metal waveguide, a plasmon nanometer antenna is used for excitating the SPP mode wave; the mode wave is separated and collected; an electron hole pair is obtained through energy conversion; the response on the infrared light in the specific wave band or the response of the infrared wave band wide spectrum is realized. The battery design can comprehensively solve the problems of crystal lattice matching and high cost in the conventional multi-junction battery; the light loss and the heat loss of the battery are obviously reduced; the wide spectrum response and the photoelectric conversion efficiency of the battery are improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a conductive surface plasmon polariton heterogeneous integrated solar cell. Background technique [0002] Solar cells have become an important way of energy supply today. Since the 21st century, the output of solar cells has increased significantly around the world. After a period of rapid growth, although this field has made considerable development and progress, it still occupies the market The photoelectric conversion efficiency of cells such as crystalline silicon with the largest share is only about 18%-20%, because the efficiency of converting photons into carriers in cells is limited by the Shockley-Queisser limit in principle. The solar spectrum covers a wide spectral band from 350nm to 2000nm. It is difficult for single-bandgap silicon materials to efficiently convert all incident photons into carriers: photons with energy lower than the bandgap of silicon semiconduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44
CPCH10K30/10H10K30/87Y02E10/549
Inventor 张彤张晓阳王善江苏丹曹榕
Owner SOUTHEAST UNIV