Porous layer structure perovskite solar battery and preparation method thereof

A solar cell and perovskite-type technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of long preparation process, cost-effective competition, and high energy consumption in the preparation process, and achieve simple process, high coordination, and reliability good control effect

Active Publication Date: 2016-04-20
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, silicon-based solar cells have been industrialized and have a relatively mature market. However, due to their long preparation process,

Method used

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  • Porous layer structure perovskite solar battery and preparation method thereof
  • Porous layer structure perovskite solar battery and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0047] Example 1

[0048] A method for preparing a porous layer structure perovskite solar cell includes the following steps:

[0049] 1. Choose FTO glass with a sheet resistance of 12Ω and a transmittance of 75% as the FTO glass substrate 1, and then wash it with acetone and alcohol. The thickness of the FTO glass substrate is 100-150nm;

[0050] 2. Preparation of dense layer (same as step 2 of comparative example 1)

[0051] Put the weighed 109mg ethylene glycol amine and 471mg tetrabutyl titanate into a 20ml screw-top bottle, then add 10ml ethanol, then place the screw-top bottle on a magnetic stirrer and continue stirring for 12h, and finally aging for 24h. Obtain solution A. Take an appropriate amount of solution A and drop it on the FTO glass substrate 1, and then spin-coat for 40 seconds at a rate of 2000-5000r. The resulting film is annealed at 500°C for 30 minutes to obtain TiO 2 Dense layer 2; TiO 2 The thickness of the dense layer is 20-80 nm.

[0052] 3. Upconversion lumi...

Example Embodiment

[0063] Example 2

[0064] A method for preparing a porous layer structure perovskite solar cell includes the following steps:

[0065] 1. Choose FTO glass with a sheet resistance of 12Ω and a transmittance of 75% as the FTO glass substrate 1, and then wash it with acetone and alcohol.

[0066] 2. Preparation of dense layer (same as step 2 of comparative example 1)

[0067] 3. Upconversion luminescent material / TiO 2 Preparation of porous layer of mixture

[0068] Will NaYF 4 Conversion material on the substrate (NaYF 4 : Yb with a stoichiometric ratio of 2% 3+ , Er with a stoichiometric ratio of 0.5% 3+ 1) Mix uniformly with titanium dioxide P25 at a weight ratio of 1:4 to obtain mixture A; mix ethyl cellulose, terpineol, and alcohol at a weight ratio of 1:3:20 to obtain sol B; place sol B in 10ml Then pour mixture A into the bottle. The mass ratio of mixture A to sol B is 1:300. The screw-top bottle was sealed and placed on a magnetic stirrer for continuous stirring for more than 12 h...

Example Embodiment

[0077] Example 3

[0078] A method for preparing a porous layer structure perovskite solar cell includes the following steps:

[0079] 1. Choose FTO glass with a sheet resistance of 12Ω and a transmittance of 75% as the FTO glass substrate 1, and then wash it with acetone and alcohol.

[0080] 2. Preparation of dense layer (same as step 2 of comparative example 1)

[0081] 3. Upconversion luminescent material / TiO 2 Preparation of porous layer of mixture

[0082] Will NaYF 4 Conversion material on the substrate (NaYF 4 : Yb with a stoichiometric ratio of 2% 3+ , Ho with a stoichiometric ratio of 0.5% 3+ ) Mix uniformly with titanium dioxide P25 at a weight ratio of 8:4 to obtain mixture A; mix ethyl cellulose, terpineol, and alcohol at a weight ratio of 1:2:20 to obtain sol B; place sol B in 10ml Then pour mixture A into the bottle. The mass ratio of mixture A to sol B is 1:400. The screw-top bottle is sealed and placed on a magnetic stirrer for continuous stirring for more than 12 hou...

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Abstract

The invention discloses a porous layer structure perovskite solar battery and a preparation method thereof. The porous layer structure perovskite solar battery comprises a substrate, a compact layer, a porous layer, a light absorption layer, a hole transport layer and a metal electrode layer which are stacked sequentially. The novel porous layer is used, that is, the porous layer is prepared by utilizing mixture of an upconversion material with NaYF4 as the matrix and TiO2 nano-particles. The upconversion material can absorb near-infrared light and emit visible light. The porous material not only can increase electronic transmission paths and reduce recombination of electron hole pairs, but also can effectively improve the number of photons absorbed by a perovskite film layer. The preparation method has the advantages of being simple in process, good in controllability and high in coordination.

Description

technical field [0001] The invention relates to the technical field of perovskite solar cells, in particular to a perovskite solar cell and a preparation method thereof. Background technique [0002] Due to the increasingly serious phenomenon of global warming, countries all over the world have adopted strict controls on carbon dioxide emissions. Traditional energy sources such as oil and coal will be exhausted in a few years, and people's emphasis on and demand for new energy has become increasingly prominent. The vigorous development of the solar cell industry. At present, silicon-based solar cells have been industrialized and have a relatively mature market. However, due to their long preparation process, high energy consumption in the preparation process, and expensive equipment, their cost performance cannot compete with traditional energy sources. Therefore, it is imperative to research and develop new solar cells with high efficiency and low cost. [0003] Perovskit...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K30/151Y02E10/549Y02P70/50
Inventor 阙文修阙美丹尹行天陈鹏杨亚威杜亚平
Owner XI AN JIAOTONG UNIV
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