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Cu@Cu-Au nano-particle with core-shell structure and preparation method and application thereof

A nanoparticle, core-shell structure technology, applied in the direction of nanotechnology, final product manufacturing, organic semiconductor devices, etc., can solve the problems of poor stability, easy to be oxidized, loss of optical and electrical properties, etc., to achieve stable properties and wide absorption spectrum , the effect of reducing production costs

Active Publication Date: 2016-03-16
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of nano-copper are also very obvious, such as poor stability, easy to be oxidized in air, and then lose its unique optical and electrical properties.

Method used

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  • Cu@Cu-Au nano-particle with core-shell structure and preparation method and application thereof
  • Cu@Cu-Au nano-particle with core-shell structure and preparation method and application thereof
  • Cu@Cu-Au nano-particle with core-shell structure and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Preparation of CuCu-Au nanoparticles.

[0040] (1) Form a single copper inner core:

[0041] Weigh 8mg (0.1mmol) of CuO and place it in a round bottom flask, add 1.6mL of oleic acid and 1.6mL of 1-octadecene mixture, stir well to obtain a uniform black suspension; replace the atmosphere of the system with In Ar atmosphere, heated to 230°C under stirring condition and kept for 30min to obtain a brown-yellow solution; slowly added 1.4mL (4.3mmol) oleylamine dropwise to the above system, 2+ Reduction to elemental Cu to obtain a suspension of elemental Cu nanoparticles;

[0042] (2) Construction of gold-copper core shell:

[0043] Under an argon atmosphere, add 120 μL HAuCl dropwise to the above system 4 solution in toluene (wherein HAuCl 4 The mass is 0.8mg), at this time the temperature of the system drops slightly, when the temperature of the system drops to 140°C, slowly add 4mLAu (PPh 3 )Cl o-dichlorobenzene solution (wherein Au(PPh 3 )Cl mass is 35mg)...

Embodiment 2

[0050] Example 2: Preparation of CuCu-Au nanoparticles.

[0051] (1) Form a single copper inner core:

[0052] Weigh 8mg (0.1mmol) of CuO and place it in a round bottom flask, add 1.6mL of oleic acid and 1.6mL of 1-octadecene mixture, stir well to obtain a uniform black suspension; replace the atmosphere of the system with In Ar atmosphere, heated to 230°C under stirring condition and kept for 30min to obtain a brown-yellow solution; slowly added 1.4mL (4.3mmol) oleylamine dropwise to the above system, 2+ Reduction to elemental Cu to obtain a suspension of elemental Cu nanoparticles;

[0053] (2) Construction of gold-copper core shell:

[0054] Under an argon atmosphere, add 120 μL HAuCl dropwise to the above system 4 solution in toluene (wherein HAuCl 4 The mass is 0.8mg), at this time the temperature of the system drops slightly, when the temperature of the system drops to 140°C, slowly add 4mLAu (PPh 3 )Cl o-dichlorobenzene solution (wherein Au(PPh 3 )Cl mass is 30mg)...

Embodiment 3

[0058] Example 3: Preparation of CuCu-Au nanoparticles.

[0059] (1) Form a single copper inner core:

[0060] Weigh 8mg (0.1mmol) of CuO and place it in a round bottom flask, add 1.6mL of oleic acid and 1.6mL of 1-octadecene mixture, stir well to obtain a uniform black suspension; replace the atmosphere of the system with In Ar atmosphere, heated to 230°C under stirring condition and kept for 30min to obtain a brown-yellow solution; slowly added 1.4mL (4.3mmol) oleylamine dropwise to the above system, 2+ Reduction to elemental Cu to obtain a suspension of elemental Cu nanoparticles;

[0061] (2) Construction of gold-copper core shell:

[0062] Under an argon atmosphere, add 120 μL HAuCl dropwise to the above system 4 solution in toluene (wherein HAuCl 4 The mass is 0.8mg), at this time the temperature of the system drops slightly, when the temperature of the system drops to 140°C, slowly add 4mLAu (PPh 3 )Cl o-dichlorobenzene solution (wherein Au(PPh 3 )Cl mass is 40mg)...

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Abstract

The invention discloses a Cu@Cu-Au nano-particle with a core-shell structure and a preparation method and application thereof. Particularly, the invention provides a Cu@Cu-Au nano-particle, wherein Au is mainly distributed at the outer layer while Cu is not only distributed in the core but also at the outer layer to some degree. The preparation method of the nano-particle comprises the following three steps: (1) forming an elementary Cu core; (2) establishing a Au-Cu core-shell; and (3) carrying out posttreatment. The Cu@Cu-Au nano-particle has relatively strong absorption in the range of 500nm to 900nm and also has relatively high stability. Compared with a device based on PEDOT:PSS, a device using polymer solar cell taking a mixture of PEDOT:PSS and the Cu@Cu-Au nano-particle as a hole transmission layer has the advantages that the efficiency can be improved by about 0.5% and the increase is about 15.6%.

Description

technical field [0001] The invention belongs to the field of photovoltaic materials, and relates to CuCu-Au nanoparticles with a core-shell structure, a preparation method thereof, and an application in preparing photovoltaic devices. Background technique [0002] Gold nanoparticles with a certain size are a new class of nanomaterials with unique optical and electrical properties and excellent thermal stability, and have been widely used in the field of organic polymer solar cells in recent years. For example, according to AlanJ.Heeger, et.al.,EnhancementofDonor-AcceptorPolymerBulkHeterojunctionSolarCellPowerConversionEfficienciesbyAdditionofAuNanoparticles[J],Angew.Chem.Int.Ed. ,2011,50(24):5519-5523 ​​reported that adding 5% gold nanoparticles into the photoactive layer of organic polymer solar cells can increase the photoelectric conversion efficiency of the device by 10~20%, which is mainly due to The introduction of gold nanoparticles may improve the absorption spectru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42B82Y40/00
CPCB82Y40/00H10K30/451H10K2102/00Y02E10/549Y02P70/50
Inventor 冯莱汤铭留周东营
Owner SUZHOU UNIV
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