Flexible perovskite solar cell production technology

A technology for solar cells and preparation processes, applied in the field of solar cells, can solve problems such as inapplicability of flexible perovskite cells, unfavorable large-area preparation of batteries, and difficult problems of battery industrialization, and achieve the advantages of large-area industrial preparation, light weight, The effect of taking up little space

Inactive Publication Date: 2015-07-22
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The high vacuum required for 500°C annealing and electron beam thermal evaporation, coupled with the consumption of precious metals, makes the cost of battery preparation high, which is not conducive to the large-area preparation of batteries, and brings difficulties to th

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0031] 1) Etching: use PET-ITO as the flexible conductive substrate (including ITO conductive layer 1 and PET substrate layer 2), etch a separation groove on the ITO conductive layer 1, and then clean the flexible conductive substrate; using etching solution The etching solution for the ITO conductive layer 1 is prepared from zinc powder and 2mol / L dilute hydrochloric acid, and the mass ratio of the two is 1:20. The flexible conductive substrate used is a PET film with a thickness of 0.15 mm, and ITO is sputtered by magnetron sputtering technology. ℃.

[0032] 2) Preparation of the photoanode: deposit a layer of ZnO dense layer 3 on the cleaned conductive substrate by cathodic electrochemical deposition, then use magnetron sputtering to coat a layer of ZnO seed layer on the ZnO dense layer 3, and then The ZnO nanowire 4 with a length of 0.5 μm is grown on the ZnO dense layer 3 by the hydrothermal method to obtain the photoanode of the solar cell; the reaction solution used by...

Embodiment 2

[0036] 1) Etching: use PET-ITO as the flexible conductive substrate (including ITO conductive layer 1 and PET substrate layer 2), etch a separation groove on the ITO conductive layer 1, and then clean the flexible conductive substrate; using etching solution The etching solution for the ITO conductive layer 1 is prepared from zinc powder and 1.5 mol / L dilute hydrochloric acid, and the mass ratio of the two is 1:15. The flexible conductive substrate used is a PET film with a thickness of 0.18 mm, and ITO is sputtered by magnetron sputtering technology. The substrate square resistance of the flexible conductive substrate is 6Ω / □, the light transmittance is greater than 80%, and the withstand temperature is 160 ℃.

[0037] 2) Preparation of the photoanode: deposit a layer of ZnO dense layer 3 on the cleaned conductive substrate by cathodic electrochemical deposition, then use magnetron sputtering to coat a layer of ZnO seed layer on the ZnO dense layer 3, and then The ZnO nanowi...

Embodiment 3

[0041] 1) Etching: use PET-ITO as the flexible conductive substrate (including ITO conductive layer 1 and PET substrate layer 2), etch a separation groove on the ITO conductive layer 1, and then clean the flexible conductive substrate; using etching solution The etching solution for the ITO conductive layer 1 is prepared from zinc powder and 3mol / L dilute hydrochloric acid, and the mass ratio of the two is 1:10. The flexible conductive substrate used is a PET film with a thickness of 0.20 mm, and ITO is sputtered by magnetron sputtering technology. ℃.

[0042] 2) Preparation of the photoanode: deposit a layer of ZnO dense layer 3 on the cleaned conductive substrate by cathodic electrochemical deposition, then use magnetron sputtering to coat a layer of ZnO seed layer on the ZnO dense layer 3, and then ZnO nanowires 4 with a length of 2 μm are grown on the ZnO dense layer 3 by the hydrothermal method to obtain the photoanode of the solar cell; the reaction solution used by the...

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Abstract

The invention discloses a flexible perovskite solar cell production technology. The flexible perovskite solar cell production technology includes the steps of 1), etching; 2), producing a photo-anode; 3), performing film formation by printing to obtain a carbon counter electrode, namely, performing film formation on a flexible conductive substrate by using conductive carbon paste with the drying temperature below 150 DEG C according to a silk-screen printing method so as to obtain the carbon counter electrode of a solar cell, wherein one end of the carbon counter electrode contacts with an ITO (indium tin oxide) conductive layer, a gap is formed between the other end of the carbon counter electrode and the ITO conductive layer, and a grown ZnO nanowire is arranged in the gap; 4), adding perovskite. The flexible perovskite solar cell production technology has the advantages that the photo-anode of the cell is produced on the flexible conductive substrate through a low-temperature production technology; then, the carbon counter electrode of the cell is produced from the low-temperature conductive carbon paste with the organic solvent drying temperature below 150 DEG C, and a film is produced by means of silk-screen printing, so that production cost of the counter electrode of the cell is reduced greatly; the flexible perovskite solar cell production technology is rapid in drying and good in conductivity, and heating temperature does not exceed borne temperature limit of the flexible conductive substrate.

Description

technical field [0001] The invention belongs to the field of solar cells, and more specifically relates to a preparation process of a flexible perovskite solar cell. Background technique [0002] At present, perovskite has been applied to solar cells for the first time because of its excellent light absorption ability and electron transmission ability. After years of development, the photoelectric conversion efficiency of solar cells has increased from the initial 3.8% to 19%, which is a A photoelectric conversion material with great development potential. With the deepening of research, the efficiency of the battery is very likely to exceed the current relatively mature monocrystalline silicon solar cells. [0003] In the preparation process of perovskite cells, the photoanode is usually anatase TiO which has been annealed and crystallized at 500 °C. 2 porous structure. At the same time, the preparation of the counter electrode usually adopts the process of electron beam...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K71/60H10K71/611H10K30/152H10K30/81H10K30/00Y02E10/549Y02P70/50
Inventor 廖广兰刘智勇史铁林谭先华孙博吴悠妮
Owner HUAZHONG UNIV OF SCI & TECH
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