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Plasma strengthening upconverter for solar cells and preparation method thereof

A plasma and solar cell technology, applied in the field of solar cells to achieve the effect of enhancing absorption and improving cell efficiency

Inactive Publication Date: 2014-06-25
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the band gap of the solar cell material, the solar cell can only absorb the visible part of the solar spectrum.

Method used

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  • Plasma strengthening upconverter for solar cells and preparation method thereof
  • Plasma strengthening upconverter for solar cells and preparation method thereof
  • Plasma strengthening upconverter for solar cells and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Firstly, a metal Ag thin film with a thickness of about 20nm is deposited on the glass substrate by vacuum evaporation technology; secondly, the up-conversion luminescent material NaYF 4 :18%Yb 3+ ,2%Er 3+ Coated on the surface of the Ag film to form a film with a thickness of about 0.25mm; then heated to 250°C in a nitrogen atmosphere for annealing. Utilizing the surface tension aggregation of the metal Ag film, the metal film forms a spherical metal nanoparticle array with a diameter of about 50-100nm, and some smaller-sized metal particles are attached to the surface of the up-conversion light-conversion material through diffusion. Due to the localized surface plasmon effect of the nano-metal particles, the up-conversion luminescent material can absorb more incoming infrared light, thereby emitting stronger visible light and increasing the light absorption of the battery.

Embodiment 2

[0028] First, a layer of up-conversion luminescent material film NaYF is coated on the surface of the glass substrate. 4 :18%Yb 3+ ,2%Er 3+ , with a thickness of about 0.25mm; subsequently, a metal Ag film was deposited on the up-conversion material by vacuum evaporation technology, with a thickness of 20nm; and then heated to 250°C in a nitrogen atmosphere for annealing to obtain plasmon enhancement for solar cells up converter.

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Abstract

The invention belongs to the technical field of solar cells, in particular to a plasmon strengthening upconverter for the solar cells and a preparation method thereof. The plasmon strengthening upconverter for the solar cells is formed by enabling nanometer metal particles and up-conversion luminescent material particles to be evenly dispersed on a substrate. The plasmon strengthening upconverter for the solar cells and the preparation method use surface plasmon polariton effects of the nanometer metal particles and strengthen absorption of upconverter materials to light, thereby emitting more visible light, increasing absorption of the cells to the light and improving cell efficiency accordingly.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a plasmon-enhanced up-converter for solar cells and a preparation method thereof. Background technique [0002] With the rapid development of society and economy, the human demand for energy is increasing day by day. Photovoltaic power generation will play an important part in the field of renewable energy in the future. At present, the biggest constraint factor for the further development of the photovoltaic industry is that its power generation cost is higher than that of conventional energy sources. Therefore, the development of high-efficiency, low-cost, and long-life solar cells has become a research hotspot all over the world. One of the ways to improve battery efficiency is how to further improve the full use of sunlight, which involves research on advanced light management design. [0003] One of the ways to achieve light-management design is to use ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/055H01L31/0232H01L31/18
CPCY02E10/50Y02E10/52Y02P70/50
Inventor 陈永生焦岳超卢景霄
Owner ZHENGZHOU UNIV