High-efficiency blade-coated organic solar cells enabled via an in situ nitrogen-blowing and heating strategy

Abstract

Blade-coating is a promising technology to develop high-performance large-area organic solar cells (OSCs), with significant potential in cost-effective industrial-scale production. However, the application of blade-coating is limited by challenges related to the formation of a non-uniform film and unfavorable morphology during large-area coating processes, particularly under ambient environments. In this study, we developed an in situ nitrogen-blowing and heating assisted blade-coating process, which facilitates the production of uniform large-area films. After the film uniformity and morphology optimizations under combined aerodynamic and thermal modulation, a power conversion efficiency (PCE) of 18.1% was achieved in PM6:BTP-eC9 OSCs, which was comparable to that of spin-coated devices. Furthermore, large-area OSC modules (effective area: 12 cm2) fabricated via the nitrogen-blowing and heating assisted strategy demonstrated a PCE of 15.7%. This work paves the way for the rapid production of high-performance organic solar modules.

Graphical abstract: High-efficiency blade-coated organic solar cells enabled via an in situ nitrogen-blowing and heating strategy

Supplementary files

Article information

Article type
Paper
Submitted
22 Mar 2025
Accepted
03 Jun 2025
First published
08 Jun 2025

J. Mater. Chem. C, 2025, Advance Article

High-efficiency blade-coated organic solar cells enabled via an in situ nitrogen-blowing and heating strategy

Y. Jin, R. Hu, D. Xie, X. Ren, X. Huang, Y. Ji, X. Liu, L. Liang, X. Yang and W. Huang, J. Mater. Chem. C, 2025, Advance Article , DOI: 10.1039/D5TC01245G

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