A perovskite solar cell based on mesoporous inorganic hole transport material and a preparation method thereof

A technology of hole transport materials and solar cells, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as poor carrier transport efficiency, low photoelectric conversion performance, and poor thermal stability, and achieve energy level matching performance, overcome poor thermal stability, and improve battery performance

Inactive Publication Date: 2018-12-28
SICHUAN NEW MATERIAL RES CENT +1
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Problems solved by technology

[0007] In view of this, this application provides a perovskite solar cell based on mesoporous inorganic hole transport materials and its preparation method, which can not only solve the problem of poor carrier transport efficiency and photoelectric conversion of planar heterojunction perovskite solar cells. The performance is generally relatively low, and at the same time, it solves the problem of high-temperature preparation of electron transport materials with traditional upright mesoscopic structures
Moreover, inorganic hole materials have excellent thermal stability, which overcomes the problem of poor thermal stability of traditional organic hole transport materials.

Method used

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  • A perovskite solar cell based on mesoporous inorganic hole transport material and a preparation method thereof
  • A perovskite solar cell based on mesoporous inorganic hole transport material and a preparation method thereof
  • A perovskite solar cell based on mesoporous inorganic hole transport material and a preparation method thereof

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preparation example Construction

[0035] The present invention also provides a kind of preparation method of perovskite solar cell, comprising the following steps:

[0036] (1) providing a conductive glass layer, on which a dense hole transport layer is prepared by electron beam evaporation;

[0037] (2) Spin coating a mesoporous hole transport material on the dense hole transport layer to obtain a mesoporous hole transport layer;

[0038] (3) On the mesoporous hole transport layer, a perovskite precursor is prepared by an anti-solvent one-step extraction method, and annealed and crystallized to obtain a perovskite light-absorbing layer;

[0039] (4) Depositing an electron transport material on the perovskite light-absorbing layer to obtain an electron transport layer;

[0040] (5) spin coating a hole blocking material on the surface of the electron transport layer to obtain a hole blocking layer;

[0041] (6) Evaporating a counter electrode material on the hole blocking layer to obtain a counter electrode l...

Embodiment 1

[0053] Such as figure 1 As shown, a perovskite solar cell based on a mesoporous inorganic hole transport material, the solar cell includes a conductive glass layer, a dense hole transport layer, a mesoporous hole transport layer, and a perovskite light-absorbing layer from bottom to top. layer, electron transport layer, hole blocking layer and counter electrode layer.

[0054] Such as figure 2 Shown, the preparation method of above-mentioned perovskite solar cell comprises the following steps:

[0055] (1) Preparation of dense hole transport layer: NiO dense hole transport layer was prepared on the FTO conductive glass layer by electron beam evaporation method;

[0056] (2) Preparation of mesoporous hole transport layer: the mesoporous hole conductor material CuGaO 2 (mp-CuGaO 2 ) was dissolved in isopropanol and ethyl cellulose and terpineol were added to prepare a slurry, which was spin-coated on the dense hole transport layer at 5000 rpm for 30 seconds, and the mesopor...

Embodiment 2

[0063] A perovskite solar cell based on a mesoporous inorganic hole transport material, the solar cell sequentially includes a conductive glass layer, a dense hole transport layer, a mesoporous hole transport layer, a perovskite light-absorbing layer, and an electronic Transport layer, hole blocking layer and counter electrode layer.

[0064] The preparation method of above-mentioned perovskite solar cell comprises the following steps:

[0065] (1) Preparation of dense hole transport layer: CuO dense hole transport layer was prepared on the FTO conductive glass layer by electron beam evaporation method;

[0066] (2) Preparation of mesoporous hole transport layer: the mesoporous hole conductor material CuCrO 2 Dissolve in isopropanol and add ethyl cellulose and terpineol to prepare a slurry, spin coat it on the dense hole transport layer at 5000 rpm for 30 seconds, and anneal at 200°C to obtain a mesoporous hole transport layer;

[0067] (3) Preparation of perovskite light-ab...

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Abstract

The invention discloses a perovskite solar cell based on a mesoporous inorganic hole transport material and a preparation method thereof. The solar cell comprises a conductive glass layer, a dense hole transport layer, a mesoporous hole transport layer, a perovskite light absorbing layer, an electron transport layer, a hole blocking layer and a counter electrode layer in order from bottom to top.The invention interchanges the positions of the electron transport layer and the hole transport layer in the traditional mesoscopic perovskite battery, a mesoporous material is prepared between the ultrathin and dense hole material and the perovskite material, an inverted mesoscopic device with a double-layer hole transport layer is obtained, which can not only solve the problems of poor carrier transport efficiency and relatively low photoelectric conversion performance of planar heterojunction perovskite solar cells, but also solve the problem of high-temperature preparation of electron transport materials with traditional positive mesoscopic structure. Moreover, the use of inorganic hole transport materials solves the problem of poor thermal stability of traditional organic hole transport materials.

Description

technical field [0001] The invention belongs to the field of photovoltaics, and in particular relates to a perovskite solar cell based on a mesoporous inorganic hole transport material and a preparation method thereof. Background technique [0002] At present, perovskite (perovskite) solar cell structures mainly include the following three types: (a) upright planar structure, (b) inverted planar structure, and (c) mesoscopic structure. [0003] Planar structure perovskite solar cells are simple in structure and easy to prepare, but there are big problems in stability. At the same time, the photoelectric conversion performance of planar heterojunction perovskite solar cells is generally relatively low, and the carrier transport efficiency is poor. [0004] Mesoscopic structure batteries are currently the mainstream structure for obtaining high-efficiency batteries. The general structure of traditional mesoscopic structure perovskite solar cells is as follows from bottom to to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/10H10K30/00Y02E10/549
Inventor 张文华吴义辉陈雨张志群
Owner SICHUAN NEW MATERIAL RES CENT
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