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Secondary Aggregation Induced by Volatile Additive for Improved Exciton Diffusion and Charge Separation in High Efficiency Organic Photovoltaic Devices.
- Source :
-
Chinese Journal of Chemistry . Nov2024, Vol. 42 Issue 22, p2825-2832. 8p. - Publication Year :
- 2024
-
Abstract
- Comprehensive Summary: The morphology of the active layer plays a crucial role in the performance of organic photovoltaics. Although volatile additives are commonly used to manipulate the morphology, their mechanism of action remains poorly understood. In this study, we conducted a systematic exploration of the mechanism of the traditional volatile additive 1‐CN in film formation kinetics of typical PM6:Y6 system. We found that 1‐CN induces a secondary aggregation effect, improving film morphology and promoting face‐on crystalline orientation. Through elucidating its impact on exciton dynamics, we established a link between morphology optimization and increased exciton diffusion length and accelerated charge separation. Our findings unveil the unique mechanism of action of volatile additive, providing a new perspective for improving the morphology and enhancing the performance of organic photovoltaic devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1001604X
- Volume :
- 42
- Issue :
- 22
- Database :
- Academic Search Index
- Journal :
- Chinese Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 180294154
- Full Text :
- https://doi.org/10.1002/cjoc.202400397