Improvement in Dibenzofuran-Based Hole Transport Materials for Flexible Perovskite Solar Cells

The π-conjugated system and the steric configuration of hole transport materials (HTMs) could greatly affect their various properties and the corresponding perovskite solar cells' efficiencies. Here, a molecular engineering strategy of incorporating different amounts of p-methoxyaniline-substit...

Full description

Saved in:
Bibliographic Details
Published inMolecules (Basel, Switzerland) Vol. 29; no. 6; p. 1208
Main Authors Lin, Yuanqiong, Zhang, Xiao, Lu, Jinchuan, Lin, Xiaohan, Lu, Yinghua, Li, Xin, Tu, Song
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 08.03.2024
MDPI
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:The π-conjugated system and the steric configuration of hole transport materials (HTMs) could greatly affect their various properties and the corresponding perovskite solar cells' efficiencies. Here, a molecular engineering strategy of incorporating different amounts of p-methoxyaniline-substituted dibenzofurans as π bridge into HTMs was proposed to develop oligomer HTMs, named , , and . Upon extending the π-conjugation of HTMs, their HOMO energy levels were slightly deepened, significantly increasing the thermal stability and hole mobility. The incorporation of p-methoxyaniline bridges built one or two additional triphenylamine propeller structures, resulting in a denser film. Here, the -based n-i-p flexible perovskite solar cells createdchampion efficiency, giving a power conversion efficiency of 19.46%. And the simple synthesis and purification process of contributed to its low manufacturing cost in the laboratory. This work provided a reference for the development of low-cost and efficient HTMs.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules29061208