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

A technology for solar cells and polymers, applied in the field of solar cells, can solve the problems of increased additional resistance and reduced photoelectric conversion efficiency of solar cells, and achieves the effects of reducing cell efficiency, ensuring photoelectric conversion efficiency, and increasing area

Active Publication Date: 2017-04-05
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, as the area of ​​the active layer increases, the probability of film defects increases, and at the same time, due to the increase of the additional resistance, the photoelectric conversion efficiency of the prepared solar cell decreases significantly with the increase of the area of ​​the active layer.

Method used

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

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preparation example Construction

[0032] Combine figure 1 Explain the preparation method of the active layer of large area polymer solar cell, including the following steps:

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

[0034] Dissolve the electron donor material and the electron acceptor material in an organic solvent, heat and stir to obtain a uniform mixed solution, and then add additives to the mixed solution and mix uniformly to obtain a spray ink for the active layer;

[0035] In step (1), the electron donor material is a conjugated polymer, such as P3HT, PBDTTT-CT, PBDT-TFQ, PBDTPD 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 spray ink is 0.1-60mg / ml, pref...

Embodiment 1

[0070] Preparation of active layer of large area polymer solar cell:

[0071] Combine PBDT-TFQ with PC 71 BM is dissolved in chlorobenzene at a mass ratio of 1:1, heated and stirred to obtain a uniform mixed solution, add 1,8-diiodooctane, and mix uniformly to obtain a spray ink. The spray ink is PBDT-TFQ and PC 71 The total concentration of BM is 4mg / ml, and the volume of 1,8-diiodooctane accounts for 2% of the sprayed ink volume. In an atmospheric environment, spray 5mL of chlorobenzene into the spraying chamber to build an in-situ atmosphere; it is 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 ultrasonic atomizer power 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 passes is 2; then it is transferred to the glove box for thermal annealing treatment under the cond...

Embodiment 2

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

[0075] Connect P3HT with PC 61 BM is dissolved in toluene according to the mass ratio of 1:4, heated and stirred to obtain a uniform mixed solution, added mercaptan, and mixed uniformly to obtain 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 sprayed ink volume. In an atmospheric environment, spray 8mL of carbon disulfide into the spraying chamber to build an in-situ atmosphere; use spraying process to prepare 1cm 2 The active layer, the spraying parameters of the active layer are: the liquid supply speed is 0.5ml / min, the ultrasonic atomizer power is 3.5W, the air flow is 1Mpa, the distance between the nozzle and the substrate is 8cm, the nozzle moving speed is 20mm / s, spraying The number of passes is 5; then it is transferred to the glove box for thermal annealing treatment, and the treatment condition is annealing at 120...

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Abstract

The invention discloses a large-area polymer solar cell and a preparation method for an active layer thereof, belonging to the technical field of solar cells. The method solves the technical problem that the active layer prepared by the spin coating process in the prior art has a small area, cannot meet the preparation requirements of large-area battery modules and serial modules, and is not suitable for industrial production. The preparation method of the active layer of the present invention is to dissolve the electron donor material and the electron acceptor material in an organic solvent, heat and stir to obtain a uniform mixed solution, and then add additives to the mixed solution to obtain the spray ink of the active layer , and then the spraying ink is added into the ultrasonic spraying apparatus, and the active layer of the polymer solar cell is obtained by in-situ atmosphere treatment during the spraying process. The invention can prepare the active layer of the large-area solar cell in the atmospheric environment, and ensure that the active layer of the large-area solar cell has high photoelectric conversion efficiency.

Description

Technical field [0001] The invention relates to a large-area polymer solar cell and a preparation method of its active layer, 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 mankind due to their high efficiency, light weight, and easy 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 production, wide material sources, and low cost, which are of great significance for large-scale use of solar energy and low-cost electricity. [0003] In the prior art, due to the excellent film-forming properties of the spin coating p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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