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Planar junction perovskite solar cell and fabrication method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as high energy consumption and complex process, and achieve the effects of simple cost, optimized device structure, and efficient absorption and conversion

Inactive Publication Date: 2017-06-20
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current planar junction perovskite solar cells can achieve high conversion efficiency, most of them use high temperature (>450°C) sintering process to prepare titanium dioxide mesoporous layer, which has the disadvantages of high energy consumption and complicated process.

Method used

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  • Planar junction perovskite solar cell and fabrication method thereof
  • Planar junction perovskite solar cell and fabrication method thereof
  • Planar junction perovskite solar cell and fabrication method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] (1) Clean the substrate

[0040] (2) Prepare the solution: Mix 50ml of titanium isopropoxide and 30ml of isopropanol to form a precursor solution for later use, then take 100ml of distilled water and place it in a round-bottomed flask and add 1ml of hydrochloric acid, and keep stirring at 600r.p.m. / min Stir, slowly add the titanium isopropoxide precursor solution drop by drop to the continuously stirring distilled water, heat at 60°C for 4 hours and hydrolyze to obtain a titanium dioxide glue;

[0041] (3) Spin-coat anatase-type titanium dioxide nanocrystals: use a spin coater to spin-coat 1 to 5 layers of dense titanium dioxide layered structures on the above substrate. 4000r.p.m. / min, spin coating time is 50s;

[0042] (4) spin coating perovskite absorbing layer: utilize two-step method to prepare perovskite absorbing layer, first spin-coat one deck PbI on the dense titanium dioxide layered structure described in step (3) 2 thin film, and then spin-coat formamidine ...

Embodiment 2

[0048] (1) Clean the substrate

[0049](2) Preparation of solution: Mix 20-80ml of titanium tert-butoxide and 10-60ml of isopropanol to form a precursor solution for later use, then take 50-150ml of distilled water and place it in a round-bottomed flask and add 0.5-3ml of hydrochloric acid. Stir continuously at 200-600r.p.m. / min, slowly add titanium isopropoxide precursor solution drop by drop to the continuously stirred distilled water, heat at 50-95°C for 1h-6h to obtain titanium dioxide glue;

[0050] (3) Spin-coat anatase titanium dioxide nanocrystals: use a spin coater to spin-coat 1 to 5 layers of dense titanium dioxide layered structures on the above substrate, the specific parameters are: each layer uses 30μL-60μL titanium dioxide glue, The coating speed is 3000~4000r.p.m. / min, and the spin coating time is 50s~60s;

[0051] (4) spin coating perovskite absorbing layer: utilize two-step method to prepare perovskite absorbing layer, first spin-coat one deck PbI on the de...

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Abstract

The invention discloses a planar junction perovskite solar cell and a fabrication method thereof. The planar junction perovskite solar cell comprises a substrate, a titanium dioxide layer, a perovskite light absorption layer, a hole transmission layer and a silver electrode layer which are sequentially laminated, wherein the titanium dioxide layer is a of a compact layered structure. An ultrathin anatase type titanium dioxide nanocrystal is used as an electron transmission compact layer of the perovskite solar cell, so that the application of a mesoporous titanium dioxide layer is reduced, the device structure of the perovskite solar cell is optimized, a low-temperature annealing process (less than or equal to 120 DEG C) of the cell is achieved, and the purposes of more greenness, simplicity and cost reduction of the battery fabrication process are achieved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a planar junction perovskite solar cell and a manufacturing method thereof. Background technique [0002] With the development of the economy, the form of energy we are facing is becoming more and more severe. Traditional fossil fuels not only have limited reserves, but also cause environmental pollution. Solar energy is a clean and renewable energy source. Solar cells can directly convert solar energy into electrical energy, and have broad application prospects. As the first generation of solar cells, crystalline silicon solar cells have become the mainstream products of photovoltaic cells, but the high energy consumption and high pollution in the production process limit their development. Although second-generation solar cells such as compound semiconductors and polycrystalline silicon have high conversion efficiency and save raw materials, their high energy c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/10H10K30/151H10K30/10H10K30/00Y02E10/549Y02P70/50
Inventor 云大钦杨成武张彬彬周雅清
Owner XIAMEN UNIV
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