Issue 4, 2023

Realizing 18.03% efficiency and good junction characteristics in organic solar cells via hydrogen-bonding interaction between glucose and ZnO electron transport layers

Abstract

Electron transport layers (ETLs) with excellent electron extraction capability are essential for realizing high efficiency in organic solar cells (OSCs). A sol–gel-processed ZnO ETL is widely used in OSCs due to its high mobility and suitable work function. However, the existence of defects usually results in low photovoltaic performance during the operation of OSCs. In this work, glucose (Gl) was used to passivate free OH traps via hydrogen-bonding interaction and formed ZnO/Gl ETLs with ZnO, which exhibited improved electron extraction capability and reduced trap defect density. Thus, a champion efficiency of 18.03% was obtained in a PM6:Y6 light absorber-based cell, which is >11% higher than that of the reference cell (16.15%) with a pristine ZnO ETL. Impressive enhancements by >11% were also observed in different fullerene and non-fullerene light absorber-based cells relative to that of the reference cell. This study demonstrates a new strategy to design ETLs for realizing high efficiency in OSCs.

Graphical abstract: Realizing 18.03% efficiency and good junction characteristics in organic solar cells via hydrogen-bonding interaction between glucose and ZnO electron transport layers

Supplementary files

Article information

Article type
Paper
Submitted
08 Oct 2022
Accepted
19 Dec 2022
First published
19 Dec 2022
This article is Open Access
Creative Commons BY license

J. Mater. Chem. A, 2023,11, 1810-1816

Realizing 18.03% efficiency and good junction characteristics in organic solar cells via hydrogen-bonding interaction between glucose and ZnO electron transport layers

Z. Wang, Y. Ren, J. Meng, X. Zou, S. Wang, M. Zhao, H. Wang, Y. Hao, B. Xu, E. Wang and S. Yin, J. Mater. Chem. A, 2023, 11, 1810 DOI: 10.1039/D2TA07856B

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