Title:
COMPOUND AND USE THEREOF IN SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2023/109035
Kind Code:
A1
Abstract:
Disclosed is an application of a compound in a solar cell. The structural formula of the compound is (C)n-L-(M)m, wherein n≥1 and m≥1; a C structure is selected from at least one of conjugated structural units of aromatic hydrocarbons and derivatives thereof or heterocyclic compounds and derivatives thereof; L is a chain segment having a carboxylate radical, a sulfonate radical and a phosphate radical at an end group, and the chain segment is at least one of an alkyl chain having 0-20 carbon atoms, an alkoxy chain, an ether oxygen chain, a phenyl group, a silyl group, or a nitrogen-containing fragment; and M is selected from at least one of hydrogen, an alkali metal, an alkaline earth metal or a transition metal. The present application further provides a solar cell and a preparation method therefor. The compound of the present application, when used in a solar cell, can not only adjust the energy level matching at the lower interface of a perovskite absorption layer and passivate interface defects, thereby improving interface contact of a device and reducing carrier recombination at the lower interface, but also solve the problems that the efficiency of the solar cell is difficult to further improve and the stability decreases.
Inventors:
DONG XIN (CN)
HE BO (CN)
YANG ZEJUN (CN)
ZHANG HUA (CN)
HE BO (CN)
YANG ZEJUN (CN)
ZHANG HUA (CN)
Application Number:
PCT/CN2022/097587
Publication Date:
June 22, 2023
Filing Date:
June 08, 2022
Export Citation:
Assignee:
LONGI SOLAR TECH XIAN CO LTD (CN)
International Classes:
C07D403/06; C07D417/14; H01L31/043
Foreign References:
| US5663030A | 1997-09-02 | |||
| FR3065214A1 | 2018-10-19 | |||
| CN103232087A | 2013-08-07 |
Other References:
"Master's Thesis", 3 May 2017, DALIAN UNIVERSITY OF TECHNOLOGY, CN, article XUE, YUAN: "Study of the Stability and Photovoltaic Performance of Spiro-core Hole Transport Materials in Photovoltaic Devices", pages: 1 - 63, XP009546488
LU, KUNYUAN: "New Small Molecules as Hole-transporting Layer in Efficient Polymer Solar Cells", SCIENCE-ENGINEERING II, CHINA MASTER’S THESES FULL-TEXT DATABASE, no. 09, 15 September 2014 (2014-09-15), ISSN: 1674-0246
LU, KUNYUAN: "New Small Molecules as Hole-transporting Layer in Efficient Polymer Solar Cells", SCIENCE-ENGINEERING II, CHINA MASTER’S THESES FULL-TEXT DATABASE, no. 09, 15 September 2014 (2014-09-15), ISSN: 1674-0246
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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