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A perovskite solar cell using p3ht/graphene as a hole transport layer and its preparation method

A technology of hole transport layer and solar cell, which is applied in the field of solar cells, can solve problems affecting battery stability, etc., and achieve the effects of enhancing hole transport capacity, improving stability, and enhancing crystallization performance

Active Publication Date: 2020-05-22
咸阳瞪羚谷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a perovskite solar cell and its preparation method using P3HT / graphene as a hole transport layer, to solve the problem of adding Li salt and pyridine when P3HT is used in perovskite solar cells in the prior art. Derivatives modify it, but greatly affect the technical problem of battery stability

Method used

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  • A perovskite solar cell using p3ht/graphene as a hole transport layer and its preparation method
  • A perovskite solar cell using p3ht/graphene as a hole transport layer and its preparation method
  • A perovskite solar cell using p3ht/graphene as a hole transport layer and its preparation method

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Embodiment 1

[0027] A preparation method of a perovskite solar cell using P3HT / graphene as a hole transport layer, comprising the following steps:

[0028] (1) Prepare TiO on the transparent conductive substrate 1 in sequence 2 Electron transport layer 2 and CH 3 NH 3 PB 3 Perovskite structure light absorbing layer 3.

[0029] (2) Mix P3HT and graphene at a ratio of 15 mg: 2 mg, add 2 ml of chlorobenzene, heat and stir at 60 ° C for 10 h, centrifuge for 1 h, collect the supernatant as the precursor of the P3HT / graphene hole transport layer, and then use it Spin coating at a rate of 2500rad / s to obtain a P3HT / graphene hole transport layer with a thickness of 50nm.

[0030] (3) After drying, a carbon electrode is coated on the P3HT / graphene hole transport layer as the positive electrode 5 .

Embodiment 2

[0032] A preparation method of a perovskite solar cell using P3HT / graphene as a hole transport layer, comprising the following steps:

[0033] (1) Prepare SnO sequentially on a transparent conductive substrate 2 Electron transport layer and MA 0.7 FA 0.3 PB 3 Perovskite structure light absorbing layer.

[0034] (2) Mix P3HT and graphene at a ratio of 15 mg: 10 mg, add 2 ml of chlorobenzene, heat and stir at 40 ° C for 24 h, centrifuge for 0.2 h, collect the supernatant as the P3HT / graphene hole transport layer precursor, and then Spin-coat at a rate of 2000rad / s to obtain a P3HT / graphene hole transport layer with a thickness of 100nm.

[0035] (3) After drying, a carbon electrode is coated on the P3HT / graphene hole transport layer as the positive electrode 5 .

Embodiment 3

[0037] A preparation method of a perovskite solar cell using P3HT / graphene as a hole transport layer, comprising the following steps:

[0038] (1) Prepare TiO on a transparent conductive substrate in sequence 2 Electron transport layer and CH 3 NH 3 PB 3 Perovskite structure light absorbing layer.

[0039] (2) Mix P3HT and graphene at a ratio of 15 mg: 2 mg, add 2 ml of chlorobenzene, heat and stir at 80 ° C for 10 h, centrifuge for 0.5 h, collect the supernatant as the P3HT / graphene hole transport layer precursor, and then Spin-coat at a rate of 2500rad / s to obtain a P3HT / graphene hole transport layer with a thickness of 150nm.

[0040] (3) After drying, a Pt electrode is coated on the P3HT / graphene hole transport layer as the positive electrode 5 .

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Abstract

The invention discloses a perovskite solar cell with P3HT / graphene as a hole transport layer and a preparation method thereof. The perovskite solar cell also includes a conductive substrate, an electron transport layer, a perovskite structure light absorption layer, and a space A hole transport layer and a positive electrode; a conductive substrate, an electron transport layer, a light-absorbing layer with a perovskite structure, a hole transport layer and a positive electrode are arranged in sequence from bottom to top; the hole transport layer is a P3HT / graphene composite material with a thickness of 10nm to 300nm . The present invention uses P3HT / graphene as the hole transport layer. Compared with simply using P3HT as the hole transport layer, graphene can enhance the hole transport ability of P3HT, and at the same time, the graphene sheet can also block the diffusion of perovskite ions , thereby greatly improving the photoelectric performance and stability of the battery.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a perovskite solar cell and a preparation method thereof. Background technique [0002] Today, environmental pollution and energy depletion have become two major problems plaguing the world, greatly restricting the development of society. Therefore, finding sustainable clean energy has become an urgent issue, and solar energy is a good choice—it is green, safe, and almost inexhaustible. Solar photovoltaic technology is an effective way of utilizing solar energy and an important measure to solve energy problems and environmental pollution and achieve sustainable development. After years of development, solar cells have made great breakthroughs. Traditional silicon-based solar cells have been partially commercialized, but their production technology is harsh and costly, and they have not been used on a large scale for a long time. [0003] Since the birth of perovskite sola...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/00H10K30/10H10K30/80H10K2102/00Y02E10/549
Inventor 杨冠军刘研楚倩倩丁斌李长久李成新
Owner 咸阳瞪羚谷新材料科技有限公司