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
  • Application Information

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 absorpti

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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Example Embodiment

[0071] Preparation Example 1

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

[0073] (b) Add zinc stearate, sulfur powder and TOP solution to a 25mL three-necked flask. Degas the solution under vacuum for 20 minutes, then switch to ni...

Example Embodiment

[0078] Preparation Example 2

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

[0080] (b) Add zinc stearate, sulfur powder and TOP solution to a 25mL three-necked flask. Degas the solution under vacuum for 20 minutes, then switch to nitrogen gas ...

Example Embodiment

[0086] Preparation Example 3

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