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Perovskite solar cell and preparation method therefor

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of lagging research on the stability of perovskite solar cells, limiting the photoelectric conversion efficiency of solar cells, and restricting the application of perovskite solar cells, etc., to achieve good photoelectricity Effects of conversion performance, reduction of preparation cost, and structural stability

Inactive Publication Date: 2016-06-01
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the preparation process of perovskite solar cells, due to the poor stability of the light-absorbing layer materials currently used in the air, the preparation of the cells is usually carried out under the protection of inert gases. In addition, the cells with planar structures The preparation process of the light-absorbing layer film is relatively complicated, and it is difficult to prepare a light-absorbing layer film with a dense surface, which limits the improvement of the photoelectric conversion efficiency of solar cells
In addition, the research on the stability of perovskite solar cells is relatively lagging behind, which seriously restricts the application of perovskite solar cells.

Method used

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  • Perovskite solar cell and preparation method therefor
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  • Perovskite solar cell and preparation method therefor

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Embodiment 1

[0033] A method for preparing a perovskite solar cell, comprising the steps of:

[0034] Step (a) Substrate preparation: Clean the FTO conductive glass (or FTO transparent conductive glass, transparent conductive glass FTO, the same below) with acetone, ethanol, and deionized water in sequence, and then treat it with ultraviolet and ozone for 15 minutes to obtain a clean FTO transparent conductive glass, spare;

[0035] Step (b) Dense TiO 2 The preparation of the thin film: the clean FTO transparent conductive glass of step a) is heated to 450 ℃, then adopts the spray pyrolysis method, sprays the titanium source [here the titanium source is the diisopropoxy diacetylacetonate titanium of 20mmol / L] ethanol solution], and then heat preservation treatment for 30min under the air atmosphere to obtain the surface coated with TiO 2 Thin film FTO conductive glass;

[0036] Step (c) TiO 2 Preparation of nanorod thin film: adopting hydrothermal method, the surface obtained in step b...

Embodiment 2

[0042] A method for preparing a perovskite solar cell, comprising the steps of:

[0043] Step (a) Substrate preparation: ultrasonically clean the FTO conductive glass with acetone, ethanol, and deionized water in sequence, and then treat it with ultraviolet and ozone for 15 minutes to obtain a clean FTO transparent conductive glass for future use;

[0044] Step (b) Dense TiO 2 The preparation of thin film: step a) clean FTO transparent conductive glass is heated to 450 ℃, adopts spray pyrolysis method then, sprays titanium source (the titanium source here is the diisopropoxy diacetylacetonate titanium of 20mmol / L) ethanol solution), and then heat-preserved for 30min under the air atmosphere to obtain the surface coated with TiO 2 Thin film FTO conductive glass;

[0045] Step (c) TiO 2 Preparation of nanorod thin film: adopting hydrothermal method, the surface obtained in step b) is covered with TiO 2 Titanium dioxide nanorods are grown on the FTO conductive glass of the fi...

Embodiment 3

[0052] A method for preparing a perovskite solar cell, comprising the steps of:

[0053] Step (a) Substrate preparation: ultrasonically clean the FTO conductive glass with acetone, ethanol, and deionized water in sequence, and then treat it with ultraviolet and ozone for 15 minutes to obtain a clean FTO transparent conductive glass for future use;

[0054] Step (b) Dense TiO 2 The preparation of thin film: step a) clean FTO transparent conductive glass is heated to 450 ℃, adopts spray pyrolysis method then, sprays titanium source (the titanium source here is the diisopropoxy diacetylacetonate titanium of 20mmol / L) ethanol solution), and then heat-preserved for 30min under the air atmosphere to obtain the surface coated with TiO 2 Thin film FTO conductive glass;

[0055] Step (c) TiO 2 Preparation of nanorod thin film: adopting hydrothermal method, the surface obtained in step b) is covered with TiO 2 Titanium dioxide nanorods are grown on the FTO conductive glass of the fi...

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Abstract

The invention belongs to the technical field of a solar cell, and provides a perovskite solar cell. The perovskite solar cell comprises FTO transparent conductive glass, an electron transfer layer, a light absorption layer, a hole transfer layer and a metal electrode from the bottom up; the perovskite solar cell is characterized in that the electron transfer layer adopts a titanium dioxide nanorod thin film; and the light absorption layer adopts a layered perovskite-like material (C6H5CH2CH2NH3)2(CH3NH3)Pb2I7. According to the perovskite solar cell, the titanium dioxide nanorod is adopted as the electron transfer layer, so that the surface coverage ratio of the layered perovskite-like light absorption layer thin film can be improved; and meanwhile, the layered perovskite-like (C6H5CH2CH2NH3)2(CH3NH3)Pb2I7 is used as the light absorption layer, so that the stability of the perovskite solar cell is improved, the service life of the solar cell is prolonged, and the preparation cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a titanium dioxide nanorod as an electron transport layer and a layered perovskite (C 6 h 5 CH 2 CH 2 NH 3 ) 2 (CH 3 NH 3 )Pb 2 I 7 A perovskite solar cell as a light absorbing layer and a preparation method thereof. Background technique [0002] Due to the continuous reduction of non-renewable energy such as petroleum and coal, and the increasingly serious environmental pollution caused by the extensive use of fossil energy, the development and utilization of clean renewable energy technologies is an inevitable trend of social development. Solar cells are one of the most promising options due to their ability to directly convert the abundant, green and renewable solar energy into electricity. Perovskite solar cells are a new type of thin-film solar cells, which mainly use photovoltaic materials with a perovskite structure to achieve photoelectric conver...

Claims

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Application Information

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IPC IPC(8): H01L31/0256H01L31/04H01L31/18
CPCH01L31/0256H01L31/04H01L31/18Y02E10/50Y02P70/50
Inventor 刘韩星刘克永甘小燕杜湘军郭丽玲郝华曹明贺
Owner WUHAN UNIV OF TECH