Hot Paper - Robust performance of PTQ10:DTY6 in halogen-free photovoltaics across deposition techniques and configurations for industrial scale-up

Robust performance of PTQ10:DTY6 in halogen-free photovoltaics across deposition techniques and configurations for industrial scale-up

PTQ10:DTY6在无卤素光伏领域中的稳健性能，涵盖多种沉积技术和配置，适合工业规模化生产
PTQ10:DTY6のハロゲンフリー光起電力において、産業規模アップスケーリングに向けた各種堆積技術および構成における堅牢な性能
PTQ10:DTY6의 견고한 성능, 염소 없는 태양전지에서 증착 기술 및 구성에 따른 산업 규모 확장 가능성
Robusto rendimiento de PTQ10:DTY6 en fotovoltaica libre de halógenos a través de técnicas y configuraciones de deposición para escalado industrial
Robust performance of PTQ10:DTY6 in halogen-free photovoltaics across deposition techniques and configurations for industrial scale-up
Устойчивая производительность PTQ10:DTY6 в безгалогенных фотоэлементах при различных методах осаждения и конфигурациях для промышленного масштабирования

Atiq Ur Rahman ¹ ², Tanner M. Melody ², Sydney Pfleiger ², Acacia Patterson ², Andrea Reale ¹, Brian A. Collins ²

¹ CHOSE & Dept. of Electronic Eng., University of Rome Tor Vergata, Rome 00133, Italy
² Dept. of Physics and Astronomy, Washington State University, Pullman WA99146, US

https://doi.org/10.29026/oea.2025.250148

https://www.oejournal.org/oea/article/doi/10.29026/oea.2025.250148

Opto-Electronic Advances, 25 December 2025

Abstract

With performance improvements, organic photovoltaics (OPVs) are an increasingly competitive technology for renewable energy. However, most high-performance OPVs are small-area devices processed from toxic halogenated solvents via spin-coating, posing a challenge for mass production. We study a low-cost polymer donor (PTQ10) and a non-fullerene acceptor (DTY6) in a halogen-free solvent using industrially relevant blade coating.

The non-inverted architecture performed best, achieving 12% efficiency, with the blade-coating deposition surpassing spin-coating. Active layers processed from the two coating techniques exhibited similar exciton quenching, likely due to the same measured nanodomain size and purity. However, blade-coated devices exhibited a higher charge carrier lifetime correlated with increased acceptor pi-stacking despite decreased donor pi-stacking.

This suggests that optimizing crystallinity in blade-coated devices could result in even higher performance. Additionally, high performance in upscaled blade-coated devices (1 cm²) processed in air with a green solvent demonstrated the industrial potential of this system.

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