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Method for preparing secondary perovskite solar cell

A technology of solar cells and secondary calcium, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of recycling and reuse of batteries polluted by Pb elements, and achieve the effect of low cost and simple process

Active Publication Date: 2017-02-15
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the scientific research is focused on improving the photoelectric conversion efficiency of the battery and improving the stability of the battery, but there are few reports and studies on the Pb element pollution of perovskite solar cells and the recycling and reuse of the battery.

Method used

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  • Method for preparing secondary perovskite solar cell

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Effect test

Embodiment 1

[0028] To recycle porous perovskite battery structure: glass / transparent conductive film / dense TiO 2 / Porous TiO 2 / perovskite CH 3 NH 3 PB 3 / Hole transport layer [2,2,7,7-tetrakis(N,N-di-p-methoxyphenlamine)-9,9′-spiro-bifluorene](spiro-MeOTAD) / Ag as an example,

[0029] Concrete preparation steps are as follows:

[0030] (1) Use adhesive tape to remove metallic silver;

[0031] (II) Submerge the battery substrate with the metal electrodes removed in the chlorobenzene solution, dissolve and remove the hole transport layer spiro-MeOTAD; the chlorobenzene solution adopts pure chlorobenzene;

[0032] (III) Perovskite material CH 3 NH 3 PB 3 Decompose into solid PbI by heating at 250 degrees for 10 minutes 2 and the volatile gas methylammonium iodide CH 3 NH 3 I;

[0033] (IV) by spin-coating methylammonium iodide CH 3 NH 3 I, solution secondary growth of the corresponding perovskite film CH 3 NH 3 PB 3 ;

[0034] (V) preparation of hole transport layer spiro-...

Embodiment 2

[0040] To recycle porous perovskite battery structure: glass / transparent conductive film / dense TiO 2 / Porous TiO 2 / perovskite CH 3 NH 3 PbBr 3 / hole transport layer P 3 HT / Ag as an example,

[0041] Specific steps are as follows:

[0042] (1) Use adhesive tape to remove metallic silver;

[0043] (II) Immerse the battery with the metal electrode removed in the chlorobenzene solution, dissolve and remove the hole transport layer P 3 HT; Chlorobenzene solution adopts pure chlorobenzene;

[0044] (III) Perovskite material CH 3 NH 3 PbBr 3 PbBr decomposed into solid state by heating at 250 degrees for 30 minutes 2 and the volatile gas methylammonium iodide CH 3 NH 3 Br;

[0045] (IV) by spin-coating methylammonium iodide CH 3 NH 3 Br solution, the secondary growth of the corresponding perovskite film CH 3 NH 3 PbBr 3 ;

[0046] (V) preparation of hole transport layer spiro-MeOTAD;

[0047] (VI) Evaporate Ag electrodes.

[0048] The first step of recovering ...

Embodiment 3

[0052] To recycle planar perovskite cell structure: glass / transparent conductive film / dense TiO 2 / CH 3 NH 3 PB 3 / hole transport layer P 3HT / Ag as an example,

[0053] Specific steps are as follows:

[0054] (1) Use adhesive tape to remove metallic silver;

[0055] (II) Immerse the battery with the metal electrode removed in the chlorobenzene solution, dissolve and remove the hole transport layer P 3 HT; Chlorobenzene solution adopts pure chlorobenzene;

[0056] (III) Perovskite material CH 3 NH 3 PB 3 Decompose into solid PbI by heating at 250 degrees for 30 minutes 2 and the volatile gas methylammonium iodide CH 3 NH 3 I;

[0057] (IV) by soaking methyl ammonium iodide CH 3 NH 3 I, secondary growth of the corresponding perovskite film CH 3 NH 3 PB 3 ;

[0058] (V) preparation of hole transport layer spiro-MeOTAD;

[0059] (VI) Evaporate Ag electrodes.

[0060] The first step of recovering the Ag electrode and the second step of the hole transport layer...

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Abstract

The invention relates to a method for preparing a secondary perovskite solar cell. The method comprises the steps of: removing metal electrodes of a perovskite thin-film cell; immersing the perovskite thin-film cell into a chlorobenzene solution for dissolution to remove a hole transport layer; heating a perovskite material to decompose into solid PbA2 and volatile gas methylammonium iodide; growing a perovskite thin film for the second time through immersing or spin-coating a CH3NH3A isopropanol solution; preparing the hole transport layer; and evaporating metal electrodes. The method provided by the invention has the advantages that: 1) the recycling and reuse of various materials in the perovskite cell are realized; 2) the perovskite is decomposed through heating, and a Pb element is recycled in situ in the solid form of the PbA2; 3) the PbA2 recycled in situ can achieve beneficial growth of the perovskite thin film; 4) and the solar cell prepared based on the in-situ grown perovskite thin film CH3NH3PbA3 is simpler in process and lower in cost.

Description

technical field [0001] The invention relates to the technical field of solar cell recycling, in particular to a method for in-situ recycling of lead halide compounds in perovskite solar energy to prepare secondary perovskite solar cells. Background technique [0002] With the depletion of global fossil energy and the increasing greenhouse effect and environmental pollution, clean energy and low-carbon economy have become important research topics around the world. New thin-film solar cells have attracted more and more attention because of their low cost and large-area preparation technology. Organic-inorganic hybrid perovskite materials, as materials with high light absorption coefficient and good electrical properties, have attracted the attention of researchers. In the past two years, solar cell technology based on perovskite materials has developed rapidly. At present, the efficiency of the highest perovskite cell in the laboratory has exceeded 21%. [0003] Although t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48
CPCH10K71/15Y02E10/549
Inventor 胡子阳诸跃进徐洁
Owner NINGBO UNIV
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