Issue 7, 2022

A perylene diimide dimer-based electron transporting material with an A–D–A structure for efficient inverted perovskite solar cells

Abstract

Through the introduction of two perylene diimide (PDI) moieties to the triphenylamine (TPA) core, a PDI dimer-based electron transport material has been synthesized with an A (electron acceptor)–D (electron donor)–A structure. It demonstrated a high electron mobility of 8.23 × 10−4 cm2 V−1 s−1 as a thin film and achieved a PCE of 20.07% in perovskite solar cells, higher than that of PC61BM (18.38%) as the standard reference under the same conditions. This is the highest conversion efficiency among various PDI derivatives as ETMs, providing the optimized molecular configuration by combination of twisted core (TPA) and planar peripheral moieties (PDI), as well as matched electronic properties with multiple charge transfer processes.

Graphical abstract: A perylene diimide dimer-based electron transporting material with an A–D–A structure for efficient inverted perovskite solar cells

Supplementary files

Article information

Article type
Communication
Submitted
03 9 2021
Accepted
21 10 2021
First published
22 10 2021

J. Mater. Chem. C, 2022,10, 2544-2550

A perylene diimide dimer-based electron transporting material with an A–D–A structure for efficient inverted perovskite solar cells

Y. Fan, F. Wu, F. Liu, M. Han, K. Chang, L. Zhu, Q. Li and Z. Li, J. Mater. Chem. C, 2022, 10, 2544 DOI: 10.1039/D1TC04176B

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