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A kind of highly stable mixed dimensional perovskite material and its application

A perovskite material, mixed-dimensional technology, applied in lead organic compounds, sustainable manufacturing/processing, final product manufacturing, etc., can solve sensitive problems, achieve high humidity stability, long-term stable and efficient work, high stability and the effect of humidity resistance

Active Publication Date: 2018-10-16
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the efficiency of perovskite solar cells continues to grow, due to the sensitivity of perovskite to moisture and oxygen, photodecomposition after long-term exposure to sunlight, etc., it is still necessary to consider improving the CH 3 NH 3 wxya 3 Perovskite battery packaging technology solves its stability problem, prolongs battery life, and realizes industrial application

Method used

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  • A kind of highly stable mixed dimensional perovskite material and its application
  • A kind of highly stable mixed dimensional perovskite material and its application
  • A kind of highly stable mixed dimensional perovskite material and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Press CHONH 3 I:CH(NH 2 ) 2 I:PbI 2 = 2:2:3 (n=3) ratio to make 1.3M Pb in DMF 2+ Perovskite precursor solution, stirred at 70 °C for 30 min, in a flowing air glove box, first 1000 rpm, 200 rpm s -1 Spin coating for 20s, then 6000rpm, 2000rpm s -1 Spin coating for 30 s, 120 μL of chlorobenzene was added dropwise on the rotating substrate 20 s before the end of spin coating, and then the substrate was heated on a 100 °C flat-plate furnace for 60 min. The description proceeds to obtain the hybrid dimensional perovskite solar cell (CHONH 3 ) 2 (CH(NH 2 ) 2 ) 2 Pb 3 I 7 (n=3), the cell efficiency reaches 5.38%.

Embodiment 2

[0026] Press CHONH 3 I:CH(NH 2 ) 2 I:PbI 2 = 2:8:9 (n=9) ratio to make 1.3M Pb in DMF 2+ Perovskite precursor solution, stirred at 70 °C for 30 min, in a flowing air glove box, first 1000 rpm, 200 rpm s -1 Spin coating for 20s, then 6000rpm, 2000rpm s -1 Spin coating for 30 s, and 120 μL of chlorobenzene was dropped on the rotating substrate 20 s before the end of spin coating. Then the substrate was heated on a flat furnace at 100°C for 60 min, and other steps were carried out according to the description in the section "Construction of hybrid dimensional perovskite solar cells" to obtain hybrid dimensional perovskite solar cells (CHONH 3 ) 2 (CH(NH 2 ) 2 ) 8 Pb 9 I 28 (n=9), the battery efficiency reached 15.17%.

[0027] Table 1 for CH(NH 2 ) 2 PB 3 and (A) prepared in this embodiment 2 (CH(NH 2 ) 2 ) n-1 Pb n I 3n+1 (n=9) Photovoltaic parameter comparison results of based perovskite solar cells. It can be seen from the table that under the same experi...

Embodiment 3

[0036] Press C 6 h 5 CH 2 NH 3 I:CH(NH 2 ) 2 I:PbI 2 = 2:8:9 (n=9) ratio to make 1.3M Pb in DMF 2+ Perovskite precursor solution, stirred at 70 °C for 30 min, in a flowing air glove box, first 1000 rpm, 200 rpm s -1 Spin coating for 20s, then 6000rpm, 2000rpm s -1 Spin coating for 30 s, and 120 μL of chlorobenzene was dropped on the rotating substrate 20 s before the end of spin coating. Then the substrate was heated on a flat furnace at 100°C for 60min, and the other steps were carried out according to the description in the "Construction of Hybrid Dimension Perovskite Solar Cell" section to obtain a hybrid dimension perovskite solar cell (C 6 h 5 CH 2 NH 3) 2 (CH(NH 2 ) 2 ) 8 Pb 9 I 28 (n=9), the cell efficiency reaches 14.40%.

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Abstract

The invention belongs to the technical field of perovskite solar cells, and in particular relates to a highly stable mixed-dimensional perovskite material and its application. The general formula of the mixed dimensional perovskite material is (A)2(CH(NH2)2)n-1PbnI3n+1, wherein A is (CH3)2NH2, C6H5CH2NH3, CHONH3, H3NCH2CH2CH2NH3 or H3NCH2CH2CH2CH2NH3; n=3,5 ,7,9,11. When the perovskite solar cell prepared by using the highly stable mixed-dimensional perovskite material of the present invention is placed for more than 20 days at a humidity greater than 90%, the efficiency drops by less than 0.5%.

Description

technical field [0001] The invention belongs to the technical field of perovskite solar cells, and in particular relates to a highly stable mixed-dimensional perovskite material and its application. Background technique [0002] The advent of perovskite solar cells in 2009 has attracted widespread attention from researchers around the world, leading the research upsurge of new solar cells. Organometal halide-based perovskite solar cells have attracted considerable attention due to their excellent optoelectronic properties, high light absorption coefficient, facile and versatile fabrication process, and low cost, representing an emerging photovoltaic technology. [0003] Although the efficiency of perovskite solar cells continues to grow, due to the sensitivity of perovskite to moisture and oxygen, photodecomposition after long-term exposure to sunlight, etc., it is still necessary to consider improving the CH 3 NH 3 wxya 3 Perovskite battery packaging technology solves it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46
CPCH10K85/10H10K85/141H10K85/50C07F7/24Y02E10/549Y02P70/50
Inventor 戴松元潘旭郑海英叶加久姚建曦张兵陈海彬任英科
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)