Targeted Adjusting Molecular Arrangement in Organic Solar Cells via a Universal Solid Additive

Zhang D, Li Y, Li M, Zhong W, Heumüller T, Li N, Ying L, Brabec C, Huang F (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Advanced Functional Materials Wiley-VCH Verlag

DOI: 10.1002/adfm.202205338

Abstract

The incorporation of solid additive has been considered as an effective strategy for developing organic photovoltaics with multi-components, which is independent of dynamics, playing unique roles in morphology adjustment. However, their complex working mechanisms involving specific chemical structures are selective to material systems, hence limiting their university and flexibility in application. Herein, an inert small-molecular compound naphtho[1,2-c:5,6-c′]bis[1,2,5]thiadiazole (NT) is introduced into the bulk-heterojunction blend as the solid additive, which can function with various material systems and solvents, depending on its simple π-conjugated structure and S⋯N interaction for adjusting molecular alignment. It is interesting to note that the introduced NT can not only improve device performance, but also simplify complicated pre- or post-processing methods, reduce impact from batch-to-batch differences, construct sufficient energy transfer channel as well as improve device stability. The resulting devices based on PTzBI-dF:Y6-BO system show an impressive power conversion efficiency of 17.4% with obviously enhanced T80 lifetime of >1200 h. These findings provide useful guidelines for exploring potential universal solid additives benefitting toward commercial application.

Authors with CRIS profile

Thomas Heumüller Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET)

Involved external institutions

South China University of Technology (SCUT) / 华南理工大学 CN China (CN) Shanghai Jiao Tong University / 上海交通大学 CN China (CN)

How to cite

APA:

Zhang, D., Li, Y., Li, M., Zhong, W., Heumüller, T., Li, N.,... Huang, F. (2022). Targeted Adjusting Molecular Arrangement in Organic Solar Cells via a Universal Solid Additive. Advanced Functional Materials. https://doi.org/10.1002/adfm.202205338

MLA:

Zhang, Difei, et al. "Targeted Adjusting Molecular Arrangement in Organic Solar Cells via a Universal Solid Additive." Advanced Functional Materials (2022).

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