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Quantum dots based luminescent solar concentrator based on spectral up-conversion technique, flat concentrating photovoltaic device and preparation method thereof

A technology of quantum dots and concentrators, applied in the field of concentrated photovoltaic power generation, can solve the problems of reducing the light collection efficiency of fluorescent solar concentrators, large photon transport loss, low photon energy, etc. The effect of reducing the probability of occurrence and reducing the escape rate

Active Publication Date: 2019-09-17
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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  • Quantum dots based luminescent solar concentrator based on spectral up-conversion technique, flat concentrating photovoltaic device and preparation method thereof
  • Quantum dots based luminescent solar concentrator based on spectral up-conversion technique, flat concentrating photovoltaic device and preparation method thereof
  • Quantum dots based luminescent solar concentrator based on spectral up-conversion technique, flat concentrating photovoltaic device and preparation method thereof

Examples

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specific Embodiment 1

[0028] A quantum dot fluorescent solar collector based on spectral upconversion technology, such as figure 1 As shown, it includes a 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, and 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 respectively provided with a light-trapping layer glass sheet 3 for confining most of the photons inside it, and the upper surface of the upper layer of light-trapping layer glass sheet 3 is provided with a top anti-reflection layer 4 for reducing sunlight reflection, and the lower layer is sunken The lower surface of the optical glass sheet 5 is provided with a bottom metal reflective layer 5 .

[0029] Wherein the preparation method of the solar spectrum up-conversion layer 2 is as follows: uniformly mix ...

specific Embodiment 2

[0033] A flat-panel concentrating photovoltaic device 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, a solar panel 6 is arranged around the quantum dot fluorescent solar concentrator, and the outer surface of the solar panel 6 is fixedly arranged There is a conductive metal plated PCB board 7 for supporting the solar panel 6 .

[0034] In this specific embodiment, the solar cell panel 6 is pasted around the quantum dot fluorescent solar concentrator, 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 surface of the reflective layer 5 is in close contact.

specific Embodiment 3

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

[0037] (1) Preparation of quantum dot fluorescent solar light-collecting layer 1: quantum dots with fluorescent properties are used as the luminescent center, polymer materials with good light transmission properties and high refractive index are used as the matrix, and UV-cured or heat-cured Method, after curing and demoulding, the 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: uniformly mix e...

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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 based on spectral up-conversion technology, a flat-plate concentrating photovoltaic device and a preparation method thereof. Background technique [0002] Concentrating photovoltaic refers to a technology that replaces expensive solar panels with relatively cheap concentrating materials, and uses the principle of geometric concentrating to gather sunlight to the surface of solar panels, thereby improving the efficiency of photovoltaic power generation. Traditional concentrating photovoltaic devices consist of a series of mirrors and convex lens arrays. 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 sunlight...

Claims

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Application Information

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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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