Introduction
Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
location: home > paper >
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MoO3/GO Hybrid Hole Extraction Layer Enables High Efficiency in Organic Solar Cells
DOI:
10.16355/j.cnki.issn1007-9432tyut.2022.01.002
Received:
Accepted:
| Corresponding author | Institute | |
| DONG Peng | Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education，Taiyuan University of Technology, |
abstract:
The photovoltaic performance of organic solar cells (OSCs) are strongly influenced by the functionality of hole extraction layers. In this work, a bilayer structure hole extraction layer (HEL) of S-MoO3/GO was formed by solution processed MoO3 (S-MoO3) and graphene oxide (GO). The application of hybrid HEL helped polish the interfacial contact between HEL and active layers, resulting in an increased exciton dissociation, diminished charge recombination losses, and more efficient charge extraction probability, and thereby achieving improved photovoltaic performance. The excellent charge extraction capability was proved in nonfullerene PM6:Y6 and fullerene PTB7-Th:PC71BM blend system based cells. A champion efficiency of 13.56% was observed in PM6:Y6 based cell with S-MoO3/GO HEL, which was >34% higher than the efficiency of 10.08% in the control cell with pristine S-MoO3 HEL.
Keywords:
hybrid hole extraction layer; graphene oxide; interfacial engineering; high efficiency; organic solar cells