All-inorganic perovskite solar cell and preparation method thereof

A technology of solar cells and inorganic calcium, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of low photoelectric conversion performance, poor carrier transport efficiency of solar cells, etc., to overcome poor thermal stability and be beneficial to industrial Production and practical application, the effect of improving the collection capacity

Pending Publication Date: 2019-03-15
CHANGZHOU UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of this, this application provides an all-inorganic perovskite solar cell and its preparation method. For the first time, the mesoporous double-layer hole transport structure is applied to the all-inorganic perovskite solar cell, which not only effectively solves the problem of perovskite The problem of long-term stability related to medium-volatile cations, at the same time solves the problems of poor carrier transport efficiency and relatively low photoelectric conversion performance of planar heterojunction perovskite solar cells, and effectively solves the problem of traditional positive interposer solar cells. High-temperature Preparation of Electron Transport Materials with Superstructure

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  • All-inorganic perovskite solar cell and preparation method thereof
  • All-inorganic perovskite solar cell and preparation method thereof

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Embodiment 1

[0042] Such as figure 1 As shown, an all-inorganic perovskite solar cell, the solar cell includes a conductive glass layer, a dense hole transport layer, a mesoporous hole transport layer, an inorganic perovskite light-absorbing layer, and an electron transport layer from bottom to top. hole blocking layer and counter electrode layer.

[0043] Such as figure 2 Shown, the preparation method of above-mentioned perovskite solar cell comprises the following steps:

[0044] (1) Preparation of dense hole transport layer: on the FTO conductive glass layer, a NiO dense hole transport layer with a thickness of about 8 nm was prepared by electron beam evaporation;

[0045] (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 5000rpm for 30 seconds, and a dielectric layer ...

Embodiment 2

[0052] An all-inorganic perovskite solar cell, the solar cell comprises a conductive glass layer, a dense hole transport layer, a mesoporous hole transport layer, an inorganic perovskite light-absorbing layer, an electron transport layer, and a hole blocking layer from bottom to top. layer and the counter electrode layer.

[0053] The preparation method of above-mentioned perovskite solar cell comprises the following steps:

[0054] (1) Preparation of a dense hole transport layer: a CuO dense hole transport layer with a thickness of 10 nm was prepared on the FTO conductive glass layer by electron beam evaporation;

[0055] (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 5000rpm for 30 seconds, and obtain a mesoporous hole with a thickness of 150nm after annealing at 300°C. Cave transport layer;...

Embodiment 3

[0062] A perovskite solar cell of an all-inorganic hole transport material, the solar cell sequentially includes a conductive glass layer, a dense hole transport layer, a mesoporous hole transport layer, an inorganic perovskite light-absorbing layer, and an electron transport layer from bottom to top. layer, hole blocking layer and counter electrode layer.

[0063] The preparation method of above-mentioned perovskite solar cell comprises the following steps:

[0064] (1) Preparation of a dense hole transport layer: a CuI dense hole transport layer with a thickness of 10 nm was prepared by electron beam evaporation on the FTO conductive glass layer;

[0065] (2) Preparation of mesoporous hole transport layer: the mesoporous hole conductor material CuAlO 2 Dissolve in isopropanol and add ethyl cellulose and terpineol to prepare a slurry, spin-coat it on the dense hole transport layer at 5000rpm for 30 seconds, and obtain a mesoporous hole with a thickness of 150nm after anneali...

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Abstract

The invention belongs to the field of photovoltaics, and discloses an all-inorganic perovskite solar cell and a preparation method thereof, namely, a trans mesostructured all-inorganic perovskite solar cell. The solar cell comprises a conductive glass layer, a dense cavity transport layer, mesoporous hole transport layer, an inorganic perovskite light absorbing layer, an electron transport layer,a hole blocking layer and a counter electrode layer in sequence from bottom to top. The positions of an electron transport layer and a hole transport layer in a conventional mesostructured perovskitecell are interchanged, and a layer of an all-inorganic perovskite light absorbing material is prepared between a double-layer inorganic hole material and an electron transport material so as to obtainan inverted mesostructured device with a double-layer hole transport layer. According to the all-inorganic perovskite solar cell and the preparation method thereof, a mesoporous double-layer hole structure is applied in the all-inorganic perovskite solar cell for the first time, thereby not only effectively solving the stability problem related to volatile cations in perovskite, but also solvingthe problems of bad carrier transport efficiency and relatively low photoelectric conversion performance of planar heterojunction perovskite solar cells.

Description

technical field [0001] The invention belongs to the field of photovoltaics, and in particular relates to an all-inorganic perovskite solar cell and a preparation method thereof. Background technique [0002] At present, perovskite (perovskite) types are divided into: (a) organic-inorganic hybrid perovskite, (b) organic perovskite and (c) all-inorganic perovskite. [0003] Organic-inorganic hybrid perovskite materials have gradually entered the field of vision of researchers due to their outstanding photoelectric properties, and have become one of the hotspots in the field of new material research. However, its commercial development is limited due to the decreased environmental stability associated with its volatile cations. [0004] Organic perovskite is a molecular-based material with a perovskite structure assembled by molecular groups—metal-free perovskites, also known as organic perovskites. Metal-free perovskites can effectively avoid the problems of metal toxicity a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K30/15H10K30/00Y02E10/549Y02P70/50
Inventor 袁宁一陈雨王书博丁建宁
Owner CHANGZHOU UNIV
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