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Photo-conversion quantum dot, solar light collector and solar light collection device

A solar concentrator and solar concentrator technology, applied in the field of solar power generation, can solve the problems of low efficiency, low light transmittance, high fluorescence quantum yield, etc., and achieve high optical absorption coefficient, high light conversion efficiency, and light absorption coefficient high effect

Active Publication Date: 2017-02-22
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] However, the heavy metal ions of quantum dots and the impact of coloring on humans and buildings restrict their practical application. Obviously, cadmium-free and lead-free quantum dots are more in line with the application development trend of LSC. CuInS 2 (CIS), CuInSe 2 (CISE) and their alloys (CuInSe x S 2-x or CISeS) near-infrared (NIR) quantum dot material has a wide absorption range, adjustable wavelength of emitted light, and high fluorescence quantum yield. Point solar concentrators are a key technology for the application of transparent photovoltaic smart windows, but the light transmittance of CIS quantum dot LSC devices is low, and the emission wavelength of CIS quantum dots is not at the optimal response wavelength of solar cells, so the efficiency is low

Method used

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  • Photo-conversion quantum dot, solar light collector and solar light collection device
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  • Photo-conversion quantum dot, solar light collector and solar light collection device

Examples

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Effect test

preparation example 1

[0072] (a) Weigh 0.17g AgNO 3 and 0.3g In(Ac) 3 , into a 50mL three-necked flask, measure 5mLDDT and 1mL OLA, add them in turn to the three-necked flask, stir and mix evenly, after vacuum degassing for 1 hour, switch to the protection state of continuous passage of inert gas, and increase the temperature until all solid precursors substance fully dissolved. Prepare a 2 mmol / mL Se-OLA / DDT solution with selenium powder, OLA and DDT solutions in an argon atmosphere at room temperature. The flask filled with argon was heated to 210°C, 2ml of Se-OLA / DDT solution was dropped into it, and kept for 10 minutes to nucleate the quantum dots, then raised to 230°C and kept for 10 minutes, then cooled to 190°C to obtain AgInSe 2-x S x Nuclear quantum dots (AISeS QDs), to be used;

[0073] (b) Add zinc stearate, sulfur powder and TOP solution to a 25mL three-neck flask, degas the solution in vacuum for 20 minutes, then switch to a state filled with nitrogen and heat to 100°C until the zi...

preparation example 2

[0079] (a) Weigh 0.17g AgNO 3 and 0.3g In(Ac) 3 , into a 50mL three-necked flask, measure 5mL DDT and 1ml OLA, add them in turn to the three-necked flask, stir and mix evenly, after vacuum degassing for 1 hour, switch to the protection state of continuous passage of inert gas, raise the temperature until all solid Precursors are fully dissolved. Prepare a 2 mmol / mL Se-OLA / DDT solution with selenium powder, OLA and DDT solutions in an argon atmosphere at room temperature. The flask filled with argon was heated up to 210°C, 2mL of Se-OLA / DDT solution was dropped into it, and kept for 10 minutes to nucleate the quantum dots, then raised to 230°C and kept for 10 minutes, then cooled to 190°C to obtain AgInSe2-xSx nuclei Quantum dots (AISeS QDs), to be used;

[0080] (b) Add zinc stearate, sulfur powder and TOP solution to a 25mL three-neck flask, degas the solution in vacuum for 20 minutes, then switch to a state filled with nitrogen and heat to 100°C until the zinc stearate an...

preparation example 3

[0087] The difference from Preparation Example 1 is only that the equal volume of OLA in step (a) is replaced by liquid paraffin.

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Abstract

The invention relates to a photo-conversion quantum dot which is of a core-shell structure. A core of the quantum dot is a silver indium selenium sulfur quantum dot, and a shell layer is a zinc sulfide layer. The photo-conversion quantum dot can convert high-energy photons without or having little photovoltaic effect into low-energy photons having efficient photovoltaic effect, photoelectric conversion efficiency of existing solar power generation systems is improved, and light can be collected; the photo-conversion quantum dot has potential to be applied in neutral-color transparent intelligent windows, and photovoltaic building integration is realized.

Description

technical field [0001] The invention belongs to the field of solar power generation, and relates to a light conversion quantum dot, a solar concentrator and a solar concentrator, in particular to a silver indium selenium sulfur quantum dot solar concentrator and a preparation method thereof, especially to silver indium selenium selenium A preparation method of a sulfur near-infrared quantum dot fluorescent material and a near-infrared quantum dot solar concentrator. Background technique [0002] Luminescent solar concentrators (LSCs) are a new cost-effective photovoltaic energy conversion system for applications in buildings. The World Energy Council reports that buildings are the largest energy consumers in most countries, accounting for about 40% of total energy consumption. If the integration of solar photovoltaics (BIPVs) replaces traditional building materials, it can achieve the goal of nearly zero-energy buildings. However, the opacity and shape limitation of tradit...

Claims

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Application Information

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IPC IPC(8): C09K11/88F24J2/06F24S23/00
CPCF24S23/11C09K11/883Y02E10/40H01L31/055
Inventor 王恺刘皓宸王丹陈威李尚孙小卫
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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