Preparation of MDMO-PPV encapsulated PbS quantum dot, nano bar material and battery

A technology of MDMO-PPV and nanorods, which is applied in nanostructure manufacturing, chemical instruments and methods, nanotechnology, etc., can solve the problems of small contribution of light absorption of cells, high efficiency and limited wide application, and achieve wide application , low cost and easy operation

Inactive Publication Date: 2009-08-05
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

At present, nano-tetrahedral CdSe / MDMO-PPV, CdSe nanorods / MDMO-PPV bulk heterojunction solar cells have been studied more, and the efficiency is relatively high, but CdSe is highly toxic, which limits its wide application.
And ZnO quantum dots / MDMO-PPV, TiO 2 Quantum dots / P3HT bulk heterojunction solar cells have also been studied more, and their efficiency is not as high as that of CdSe cells. The limiting factor is that the distribution of quantum dots in the polymer is discontinuous, which limits the transmission of electrons. In addition, ZnO, TiO 2 It does not contribute much to the light absorption of the cell itself, which limits the further use of sunlight

Method used

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  • Preparation of MDMO-PPV encapsulated PbS quantum dot, nano bar material and battery
  • Preparation of MDMO-PPV encapsulated PbS quantum dot, nano bar material and battery
  • Preparation of MDMO-PPV encapsulated PbS quantum dot, nano bar material and battery

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Embodiment Construction

[0061] The invention provides a preparation method of MDMO-PPV wrapped PbS quantum dots, which is used in the preparation of bulk heterojunction solar cells. Its preparation method is as follows:

[0062] (1) Dissolve 10mg of MDMO-PPV in 30mL of toluene to make an orange-yellow translucent solution;

[0063] (2) Under stirring conditions (magnetic stirring, 200 rpm), 3 mL of dimethyl sulfoxide was dropped into the solution, and the orange-yellow translucent solution immediately turned into an orange-yellow transparent solution;

[0064] (3) Add 100mg of lead acetate powder into the orange-yellow transparent solution, and dissolve it under ultrasonic conditions (kq2200b ultrasonic cleaner, 600w, 25°C);

[0065] (4) Dissolve 12 mg of thioacetamide in 3 mL of dimethyl sulfoxide solution, and dissolve it under stirring (magnetic stirring, 200 rpm);

[0066] (5) Under vigorous stirring conditions (magnetic stirring, 600 rpm), the solution containing thioacetamide was slowly added...

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Abstract

The invention provides an MDMO-PPV wrapping PbS nanometer material and a preparation method of a solar battery. Aiming at the defects of the prior preparation method of a PbS quantum dot and a nanometer rod, and the shortcomings of other inorganic or organic heterozygote solar batteries. The MDMO-PPV wrapping PbS nanometer material uses polymer semiconductor MDMO-PPV as a wrapping body, prepares the PbS quantum dot and the nanometer rod with opto-electrical application prospect, and has the characteristics of simple operation, low cost and wide range of application. The invention also successfully applies the nanometer rod material to the preparation of the inorganic or organic heterozygote solar batteries.

Description

technical field [0001] The invention relates to the field of preparation methods of nanomaterials, and relates to a material for making MDMO-PPV (poly(p-phenylene vinylene)) wrapped PbS (lead sulfide) quantum dots and nanorods, and its composite structure with MDMO-PPV to form a heterojunction solar energy battery method. Background technique [0002] PbS is an important narrow-bandgap semiconductor material with a bandgap width of 0.41eV and a Bohr radius of 18nm at room temperature. Nano-PbS has obvious quantum confinement effect. By controlling its particle size, the band gap of PbS nanocrystals can be extended from 0.4eV to 2.2eV. Therefore, PbS is widely used in solar cells, infrared detection, photoelectric switches and other fields. [0003] Quantum dot material refers to a material system in which carriers are constrained in three dimensions. In recent years, it has been one of the most active fields in nanoscience research. The main reason lies in the unique phy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02H01L51/48B82B3/00
CPCY02E10/50Y02E10/549
Inventor 王智杰曲胜春刘俊朋王占国
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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