A quantum dot fluorescent solar concentrator based on spectral upconversion technology, a flat-panel concentrator photovoltaic device, and a preparation method thereof

A technology of quantum dots and concentrators, applied in the field of concentrating photovoltaic power generation, can solve the problems of reducing the collection efficiency of fluorescent solar concentrators, large photon transport losses, and low photon energy, so as to improve the radiation recombination luminous efficiency, Reduces the chance of occurrence and the effect of reducing the escape rate

Active Publication Date: 2020-06-16
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for most commercial standard solar panels, the spectral response corresponds to a very narrow band, and the photons in the infrared band cannot be absorbed by the luminescent center quantum dots in the fluorescent solar concentrator due to their low energy. large photon transport loss
These photon transport loss processes severely reduce the light collection efficiency of fluorescent solar concentrators

Method used

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  • A quantum dot fluorescent solar concentrator based on spectral upconversion technology, a flat-panel concentrator photovoltaic device, and a preparation method thereof
  • A quantum dot fluorescent solar concentrator based on spectral upconversion technology, a flat-panel concentrator photovoltaic device, and a preparation method thereof
  • A quantum dot fluorescent solar concentrator based on spectral upconversion technology, a flat-panel concentrator photovoltaic device, and a preparation method thereof

Examples

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specific Embodiment 1

[0028] A quantum dot fluorescent solar concentrator based on spectral upconversion technology, such as figure 1 As shown, including the quantum dot fluorescent solar light collecting layer 1, the lower surface of the quantum dot fluorescent solar light collecting layer 1 is provided with a solar spectrum up-conversion layer 2, the upper surface of the quantum dot fluorescent solar light collecting layer 1 and the solar spectrum up-conversion layer The lower surface of 2 is provided with a light trapping layer glass sheet 3 for confining most of the photons inside it, the upper surface of the upper light trapping layer glass sheet 3 is provided with a top antireflection layer 4 for reducing sunlight reflection, and the lower layer is trapped The bottom surface of the optical layer glass sheet 5 is provided with a bottom metal reflection layer 5 .

[0029] The preparation method of the solar spectrum up-conversion layer 2 is as follows: ethyl orthosilicate, absolute ethanol and ...

specific Embodiment 2

[0033] A flat-panel concentrator based on spectral up-conversion technology, such as figure 1 As shown, including the quantum dot fluorescent solar concentrator based on the spectral up-conversion technology described in the above-mentioned embodiment 1, the quantum dot fluorescent solar concentrator is provided with a solar cell panel 6 around it, and the outer side of the solar cell panel 6 is fixedly arranged There is a PCB board 7 plated with conductive metal for supporting the solar panel 6 .

[0034] In this specific embodiment, the solar cell panel 6 is pasted around the quantum dot fluorescent solar collector, the top of the solar cell panel 6 is in close contact with the lower surface of the top anti-reflection layer 4, and the bottom of the solar cell panel 6 is in close contact with the bottom metal The upper surfaces of the reflective layer 5 are in close contact.

specific Embodiment 3

[0036] The preparation method of the flat-panel concentrating photovoltaic device based on the spectral up-conversion technology described in the above-mentioned specific embodiment 2 is characterized by comprising the following steps:

[0037] (1) Preparation of quantum dot fluorescent solar light-collecting layer 1: using quantum dots with fluorescent properties as the light-emitting center, using polymer materials with good light transmission properties and high refractive index as the matrix, using ultraviolet curing or heating curing The method is: after curing and demoulding, a quantum dot fluorescent solar light collecting layer 1 is prepared through cutting and polishing processes; wherein the quantum dots are any one of carbon quantum dots, all-inorganic perovskite quantum dots and cadmium sulfide quantum dots; polymerization The material is polymethyl methacrylate (PMMA) or polydimethylsiloxane (PDMS);

[0038] (2) Preparation of solar spectrum up-conversion layer 2:...

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Abstract

The invention discloses a quantum dots based luminescent solar concentrator (QDs-LSC) based on a spectral up-conversion technique, a flat concentrating photovoltaic device and a preparation method thereof. The QDs-LSC comprises a quantum dots based luminescent solar concentrating layer, and is characterized in that the lower surface of the quantum dots based luminescent solar concentrating layer is provided with a solar spectrum up-conversion layer; the upper surface of the quantum dots based luminescent solar concentrating layer and the lower surface of the solar spectrum up-conversion layer are provided with light-trapping layer glass pieces; the upper surface of the upper light-trapping layer glass piece is provided with a top antireflection layer for reducing the reflection of sunlight; and the lower surface of the lower light-trapping layer glass piece is provided with a bottom metal reflective layer. The flat concentrating photovoltaic device comprises solar panels arranged around the QDs-LSC. PCBs plated with conductive metal are fixedly disposed on the outer sides of the solar panels. The QDs-LSC can reduce the incident photon reflection loss and low-energy photon transmittance, thereby significantly improving the photon collection efficiency in the infrared band.

Description

technical field [0001] The invention belongs to the technical field of concentrating photovoltaic power generation, and in particular relates to a quantum dot fluorescent solar concentrator, a flat plate concentrating photovoltaic device and a preparation method thereof based on spectrum up-conversion technology. Background technique [0002] Concentrated photovoltaics refers to replacing expensive solar panels with relatively cheap concentrating materials, and using the principle of geometric concentrating to concentrate sunlight on the surface of solar panels, thereby improving the efficiency of photovoltaic power generation. Conventional CPV devices consist of a series of mirrors and an array of convex lenses. On the one hand, due to the obvious thermal effect of traditional photovoltaic concentrators, the service life of traditional photovoltaic concentrators is generally short. In order to reduce the thermal effect caused by long-term illumination and thereby improve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/054H01L31/055H01L31/18C09K11/77
CPCC09K11/7769H01L31/0547H01L31/055H01L31/18Y02E10/52Y02P70/50
Inventor 车锦铭张晓伟束俊鹏甘志星陈王华张涵杜文丽陈凯旗
Owner NINGBO UNIV
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