Large-area polymer solar cell and method for preparing active layer of large-area polymer solar cell

A technology of solar cells and polymers, applied in the field of solar cells, can solve the problems that cannot meet the preparation requirements of large-area battery modules and series modules, the preparation area of ​​polymer solar cells is small, and it is not suitable for industrial production, so as to ensure the photoelectric conversion Effects of efficiency, area increase, and decrease in cell efficiency

Active Publication Date: 2014-05-14
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the polymer solar cell prepared by the spin coating process in the prior art has a small preparation area, cannot meet the pre

Method used

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  • Large-area polymer solar cell and method for preparing active layer of large-area polymer solar cell

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preparation example Construction

[0032] to combine figure 1 Describe the preparation method of the active layer of a large-area polymer solar cell, comprising the following steps:

[0033] (1) Preparation of spray ink comprising donor material and acceptor material

[0034] Dissolving the electron donor material and the electron acceptor material in an organic solvent, heating and stirring to obtain a uniform mixed solution, then adding additives to the mixed solution, and mixing evenly to obtain the spray ink of the active layer;

[0035] In step (1), the electron donor material is a conjugated polymer, such as P3HT, PBDTTT-C-T, PBDT-TFQ, PBDTTTPD or PSBTBT, preferably PBDT-TFQ; the electron acceptor material is a fullerene derivative, such as PC 61 BM, PC 71 BM or IC 60 BA, preferably PC 71 BM; the mass ratio of the electron donor material and the electron acceptor material is 4:1-1:4, preferably 1:1; the total mass concentration of the electron donor material and the electron acceptor material in the ...

Embodiment 1

[0070] Preparation of the active layer of large-area polymer solar cells:

[0071] Comparing PBDT-TFQ with PC 71 Dissolve BM in chlorobenzene at a mass ratio of 1:1, heat and stir to obtain a uniform mixed solution, add 1,8-diiodooctane, and mix well to obtain a spray ink. PBDT-TFQ and PC in the spray ink 71 The total concentration of BM is 4mg / ml, and the volume of 1,8-diiodooctane accounts for 2% of the volume of the spray ink. In the atmospheric environment, 5mL of chlorobenzene is sprayed into the spray chamber to create an in-situ atmosphere; prepared by spraying process 1cm 2 and 10.2cm 2 The active layer, the spraying parameters of the active layer are: the liquid supply speed is 0.35ml / min, the power of the ultrasonic atomizer is 0.35W, the air flow is 0.4Mpa, the distance between the nozzle and the substrate is 6cm, and the nozzle moving speed is 30mm / s. The number of spraying times is 2; then transferred to the glove box for thermal annealing treatment, the condit...

Embodiment 2

[0074] Preparation of active layer of large-area polymer solar cells:

[0075] Use P3HT with PC 61 Dissolve BM in toluene at a mass ratio of 1:4, heat and stir to obtain a uniform mixed solution, add mercaptan, and mix evenly to obtain a spray ink. P3HT and PC in the spray ink 61 The total concentration of BM is 10mg / ml, and the volume of mercaptan accounts for 10% of the volume of the spray ink. In the atmospheric environment, 8mL carbon disulfide is sprayed into the spray chamber to create an in-situ atmosphere; the spray process is used to prepare 1cm 2 The active layer, the spraying parameters of the active layer are: the liquid supply speed is 0.5ml / min, the power of the ultrasonic atomizer is 3.5W, the air flow is 1Mpa, the distance between the nozzle and the substrate is 8cm, and the nozzle moving speed is 20mm / s. The number of passes is 5; and then transferred to a glove box for thermal annealing treatment, the treatment condition is 120 ° C for 15 min annealing.

[...

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Abstract

The invention discloses a large-area polymer solar cell and a method for preparing an active layer of the large-area polymer solar cell to solve the technical problems that in the prior art, an active layer prepared through a spin coating process is small in area, can not meet the preparation requirements for a large-area cell module and a series-connection module, and is not suitable for industrial production, and belongs to the technical field of solar cells. The method includes the steps of firstly, dissolving electron donor materials and electron acceptor materials in organic solvents, conducting heating and stirring, and obtaining an evenly-mixed solution; secondly, adding additives to the mixed solution, and obtaining spraying ink of the active layer; thirdly, adding the spraying ink to an ultrasonic spraying instrument, and obtaining the active layer of the polymer solar cell in the spraying process through in-situ atmosphere processing. By means of the method, the active layer of the large-area polymer solar cell can be prepared in the atmosphere environment, and it is ensured that the active layer of the large-area polymer solar cell has high photovoltaic conversion efficiency.

Description

technical field [0001] The invention relates to a large-area polymer solar cell and a method for preparing an active layer thereof, belonging to the technical field of solar cells. Background technique [0002] Polymer solar cells are about to become one of the basic energy sources for human beings because of their high efficiency, light weight, and ease of mass production. Solar cells mainly include organic solar cells and inorganic solar cells. Inorganic solar cells, such as monocrystalline silicon, polycrystalline silicon, and amorphous silicon solar cells, have high conversion efficiency, but the cost is relatively high and the process is complicated, which is not conducive to popularization. Organic polymer batteries have the advantages of good flexibility, easy fabrication, wide source of materials, and low cost, which are of great significance for large-scale utilization of solar energy and provision of cheap electric energy. [0003] In the prior art, due to the exc...

Claims

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Application Information

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IPC IPC(8): H01L51/48B05D1/38
CPCH10K71/12H10K71/40Y02E10/549
Inventor 杨小牛吴凡赵晓礼叶峰张通徐文涛崔毅杨大磊李自东张宝华吕红英
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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