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Solar light condensation plate based on quantum cutting effect

A solar concentrating and effect technology, applied in the field of solar concentrating panels, can solve the problems of low efficiency of solar concentrating panels

Active Publication Date: 2020-05-19
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-efficiency solar concentrating panel based on the quantum tailoring effect to solve the technical problem of low efficiency of the solar concentrating panel

Method used

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  • Solar light condensation plate based on quantum cutting effect
  • Solar light condensation plate based on quantum cutting effect
  • Solar light condensation plate based on quantum cutting effect

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Experimental program
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Effect test

Embodiment

[0019] The preparation method of a high-efficiency solar concentrating panel based on the quantum tailoring effect described in this embodiment comprises the following steps:

[0020] 0.1 μmol Yb-CsPbCl 3 (the molar doping amount of ytterbium element is 5%) the chloroform solution (7.5mL) of quantum dots (particle size is 8-15 nanometers) and the polymethyl methacrylate (350000 average molecular weight) of 0.83g are mixed and stirred for 10 hours , centrifuge the mixture at a low speed (2000 rpm) to take the supernatant, apply it evenly on the glass substrate by scraper casting method, and let it stand until the solvent is completely volatilized to form a solar concentrator, such as figure 1 shown.

[0021] Whether the solar concentrating panels prepared by us can achieve high optical efficiency needs to be verified by combining optical detection means and theoretical calculations. The verification detection is mainly carried out from the following three aspects:

[0022] (1...

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Abstract

The invention relates to a solar light condensation plate based on a quantum cutting effect. According to the solar light condensation plate, quantum dots with a quantum cutting effect are mainly usedas a light absorption and emission material, and a polymer is used as an optical waveguide medium; the quantum dots have a high extinction coefficient so as to absorb light efficiently, achieve largespectral Stokes shift through the quantum cutting effect so as to effectively reduce self-absorption loss, and achieve multiplied fluorescence quantum efficiency, and finally the light is waveguidedto a solar cell on the side face through the polymer to achieve photoelectric conversion; and as a preferred scheme, polymethyl methacrylate (PMMA) is selected as the polymer, rare earth metal ytterbium (Yb) doped cesium lead chloride perovskite quantum dots (Yb-CsPbCl3) are selected as the quantum dots, and finally the internal quantum efficiency up to 118% is obtained.

Description

technical field [0001] The invention relates to a solar concentrating panel based on the quantum tailoring effect. Background technique [0002] Solar concentrating panels (LSCs) are fluorescent devices that absorb sunlight and use the total reflection effect to waveguide fluorescent light to the edge of the panel, and then couple to photovoltaic cells to generate electricity. Compared with conventional solar modules, LSCs have lower photovoltaic costs and the potential to realize (semi-)transparent smart windows. where the ratio of emitted photons to absorbed solar photons at the edge of the plate defines the internal quantum efficiency of the LSC (η int ); the ratio of photons emitted by the edge of the plate to the incident solar photons defines the external quantum efficiency of the LSC (η ext ); where, η ext = η int ×η abs , η abs Represents the absorption efficiency of LSC to solar photons. Traditional fluorescent materials (such as organic dyes, colloidal quant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/00C09K11/77H01L31/048H01L31/054
CPCC03C17/009C09K11/7705H01L31/0481H01L31/0543C03C2218/114Y02E10/52
Inventor 吴凯丰罗消丁韬刘雪
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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