A process for using iodine lead formamidine as a light absorbing layer of a solar cell and an application thereof

A technology of solar cells and lead formamidine, which is applied in the field of solar cells, can solve the problems that iodine lead formamidine is not effective and reduces activation energy, and achieves the effects of low cost, improved stability/life, and improved stability and life

Inactive Publication Date: 2018-12-28
HUAZHONG UNIV OF SCI & TECH
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the above defects or improvement needs of the prior art, the object of the present invention is to provide a process and its application using iodolead formamidine as a light-absorbing layer of a solar cell, wherein the structure containing iodolead formamidine inside the mesoporous The overall process design of the method, especially the control of the ambient atmosphere of the key annealing process, compared with the prior art, can effectively solve the problem that lead iodide formamidine cannot be effectively stabilized in the mesoporous structure with the black perovskite phase ( Especia

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A process for using iodine lead formamidine as a light absorbing layer of a solar cell and an application thereof
  • A process for using iodine lead formamidine as a light absorbing layer of a solar cell and an application thereof
  • A process for using iodine lead formamidine as a light absorbing layer of a solar cell and an application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0046] Example 1

[0047] (1) Prepare transparent conductive layer and TiO on FTO substrate in sequence 2 (E.g. NR18, NR30, P25) charge transport layer, insulating layer (ZrO 2 ) And a carbon electrode layer to prepare a blank device with a three-layer mesoporous membrane structure;

[0048] (2) Preparation of perovskite precursor liquid: PbI 2 Dissolve CsI, FAI in a certain amount of DMF and stir evenly to obtain a clear and transparent precursor fluid FAPbI with a perovskite content of 1M 3 ;

[0049] (3) Fill 3 μL of the precursor solution in the blank screen-printed device, let it stand, and anneal at 150° C. for 30 min in an atmosphere containing DMF and not containing DMSO to complete the preparation.

Example Embodiment

[0050] Example 2

[0051] (1) Prepare transparent conductive layer and TiO on FTO substrate in sequence 2 (NR18, NR30, P25) charge transport layer, insulating layer (ZrO 2 ) And a carbon electrode layer to prepare a blank device with a three-layer mesoporous membrane structure;

[0052] (2) Preparation of perovskite precursor liquid: PbI 2 Dissolve it with FAI in a certain amount of DMF / DMSO (volume ratio 6 / 1~4 / 1), stir evenly to obtain a clear and transparent precursor solution FAPbI with a perovskite content of 1M 3 ;

[0053] (3) Fill 3 μL of the precursor solution in the blank screen-printed device, let it stand, and anneal at 150°C for 30 min in a solvent atmosphere containing DMSO (ie, a vapor atmosphere containing DMSO) to complete the preparation.

Example Embodiment

[0054] Example 3

[0055] (1) Prepare transparent conductive layer and TiO on FTO substrate in sequence 2 (NR18, NR30, P25) charge transport layer, insulating layer (ZrO 2 ) And a carbon electrode layer to prepare a blank device with a three-layer mesoporous membrane structure;

[0056] (2) Preparation of perovskite precursor liquid: PbI 2 Dissolve CsI, FAI in a certain amount of DMF and stir evenly to obtain a clear and transparent precursor Cs with a perovskite content of 1M x FA 1-x PbI 3 (x=0-0.15);

[0057] (3) Fill 3 μL of the precursor solution in the blank screen-printed device, let it stand, and complete the preparation after annealing at 100° C. for 30 min.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a process for using iodine lead formamidine as a light absorbing layer of a solar cell and an application thereof, wherein the light-absorbing layer of the solar cell is specifically perovskite containing iodine-lead formamidine component, and the preparation method comprises the following steps: (1) preparing a mesoporous structure; (2) preparing a precursor solution containing FAPbI3 iodolead formamidine perovskite: preparing raw materials including PbI2, FAI, CsI, etc. according to chemical dosage ratio, dissolving the raw materials in a solvent and then uniformly stirring to obtain a clear and transparent precursor solution; (3) putting the precursor into the mesoporous structure, standing, and then annealing in the solvent atmosphere to obtain the structure containing iodine lead formamidine. As a result of the anneal treatment assisted by the solvent vapor, the vapor assist of the solvent can slow down the crystallization while inhibiting the volatilization of iodoformamidine (FAI) and the like, so that the FAPbI3 can be stabilized in the black phase in the mesoporous film structure.

Description

technical field [0001] The invention belongs to the field of solar cells, more specifically, relates to a kind of iodine lead formamidine (FAPbI 3 ) as a process and application of solar cell light-absorbing layer. Background technique [0002] As a renewable clean energy, solar energy has been developed and utilized. Organic-inorganic hybrid perovskite materials are direct bandgap semiconductors, which have the characteristics of strong light absorption, high carrier mobility, adjustable bandgap, bipolar carrier conduction, and solution processing. ideal material. In just a few years, the performance of perovskite solar cells has developed rapidly, which has set off a research boom of researchers from all over the world. The laboratory notarized efficiency has exceeded 22.7%, surpassing the highest photoelectric conversion of polycrystalline silicon solar cells, which has been leading in the field of photovoltaics for many years. efficiency. [0003] MAPbI 3 (Eg=1.5eV,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01L51/48H01L51/46
CPCH10K71/12H10K71/40H10K85/30Y02E10/549
Inventor 韩宏伟侯晓萌梅安意胡玥荣耀光
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap