Mesoporous carbon electrode for carbon-based perovskite solar cells and preparation method thereof

A technology for solar cells and perovskite cells, applied in the field of solar cells, can solve problems such as incompatibility of organic hole transport materials

Active Publication Date: 2021-05-11
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a notable feature of this carbon-based perovskite solar cell is that it is incompatible with organic hole-transport materials, so most of the current research focuses on carbon-based perovskite solar cells without hole-transport materials.

Method used

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  • Mesoporous carbon electrode for carbon-based perovskite solar cells and preparation method thereof
  • Mesoporous carbon electrode for carbon-based perovskite solar cells and preparation method thereof
  • Mesoporous carbon electrode for carbon-based perovskite solar cells and preparation method thereof

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preparation example Construction

[0036] The existing research on the introduction of inorganic hole transport materials is similar to the general perovskite battery structure. A separate layer of hole transport material is prepared to increase the hole transport performance of the battery, which may affect the perovskite precursor in the battery. distribution throughout the mesoporous structure. The present invention proposes to introduce inorganic hole transport materials directly into carbon-based perovskite solar cells in the form of nanoparticles, nanosheets or nanowires as additives to carbon electrodes, thereby enhancing the hole density in carbon-based perovskite solar cells. extract. Specifically, the present invention firstly provides a method for preparing a mesoporous carbon electrode for a carbon-based perovskite solar cell, comprising the following steps:

[0037] (1) Preparation of cellulose and optional NiO X or WO y A carbon electrode slurry of nanomaterials, wherein x is 1 to 1.5; y is 2 t...

Embodiment 1

[0064] This embodiment provides a method for preparing a carbon-based perovskite solar cell, the device structure is as follows figure 1 shown, including the following steps:

[0065] Step 1: Preparation of carbon electrode slurry:

[0066] Mix 10g of graphite powder and 2g of carbon black powder with 35mL of terpineol; add 1g of zirconia powder and 15g of 15wt.% ethyl cellulose ethanol dispersion and 4mL of 2.5wt.% WO y The isopropanol dispersion of nanoparticles; the mixed slurry is put into a ball mill reactor, and ball milled overnight at a speed of 2000r / min.

[0067] Step 2: Prepare the perovskite precursor solution:

[0068] 0.198g CH 3 NH 3 I(MAI) and 0.573g PbI 2 Add it to 1ml of butyrolactone solvent, and stir overnight at 60°C.

[0069] Step 3: Spin-coat a n-butanol solution of titanium acetylacetonate on the cleaned and etched FTO conductive glass (including the glass substrate 1 and the FTO transparent conductive film) to prepare a dense titanium dioxide lay...

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Abstract

A mesoporous carbon electrode for carbon-based perovskite solar cells and a preparation method thereof, the preparation method comprising the following steps: (1) preparing an electrode containing cellulose and optional NiO X or WO y The carbon electrode slurry of nanomaterials, wherein, x is 1~1.5; ℃ sintering to obtain mesoporous carbon electrodes. The preparation process of the mesoporous carbon electrode of the present invention is simple, low in cost and good in repeatability, and the assembled carbon-based perovskite solar cell has good photoelectric conversion efficiency.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a carbon electrode for carbon-based perovskite solar cells and a preparation method thereof. Background technique [0002] Perovskite solar cells have been widely studied, and have the advantages of high photoelectric conversion efficiency, low cost, and simple preparation process. Since 2009, its efficiency has been soaring, and the highest certified efficiency has reached 23.3%. Almost all high-efficiency perovskite solar cells prepare counter electrodes by evaporating precious metals such as gold and silver. These noble metal electrodes and the required high-vacuum evaporation equipment greatly increase the cost and energy consumption of the battery. In addition, the reaction of silver with halide ions and the penetration of gold into the active layer will cause the degradation of device performance, which will adversely affect the stability of the battery and the commer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/46H01L51/44H01L51/42B82Y30/00
CPCB82Y30/00H10K71/12H10K71/60H10K30/35H10K30/81H10K2102/00Y02E10/549
Inventor 周琳刘陶然左玉华郑军刘智成步文
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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