A Cost-Effective, Aqueous-Solution-Processed Cathode Interlayer Based on Organosilica Nanodots for Highly Efficient and Stable Organic Solar Cells

Cui M, Li D, Du X, Li N, Rong Q, Li N, Shui L, Zhou G, Wang X, Brabec C, Nian L (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Advanced Materials Wiley

DOI: 10.1002/adma.202002973

Abstract

The performance and industrial viability of organic photovoltaics are strongly influenced by the functionality and stability of interface layers. Many of the interface materials most commonly used in the lab are limited in their operational stability or their materials cost and are frequently not transferred toward large-scale production and industrial applications. In this work, an advanced aqueous-solution-processed cathode interface layer is demonstrated based on cost-effective organosilica nanodots (OSiNDs) synthesized via a simple one-step hydrothermal reaction. Compared to the interface layers optimized for inverted organic solar cells (i-OSCs), the OSiNDs cathode interlayer shows improved charge carrier extraction and excellent operational stability for various model photoactive systems, achieving a remarkably high power conversion efficiency up to 17.15%. More importantly, the OSiNDs’ interlayer is extremely stable under thermal stress or photoillumination (UV and AM 1.5G) and undergoes no photochemical reaction with the photoactive materials used. As a result, the operational stability of inverted OSCs under continuous 1 sun illumination (AM 1.5G, 100 mW cm−2) is significantly improved by replacing the commonly used ZnO interlayer with OSiND-based interfaces.

Authors with CRIS profile

Xiaoyan Du Institute Materials for Electronics and Energy Technology (i-MEET) Ning Li Institute Materials for Electronics and Energy Technology (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

South China Normal University / 华南师范大学 CN China (CN) Jilin University (JLU) / 吉林大学 CN China (CN)

How to cite

APA:

Cui, M., Li, D., Du, X., Li, N., Rong, Q., Li, N.,... Nian, L. (2020). A Cost-Effective, Aqueous-Solution-Processed Cathode Interlayer Based on Organosilica Nanodots for Highly Efficient and Stable Organic Solar Cells. Advanced Materials. https://dx.doi.org/10.1002/adma.202002973

MLA:

Cui, Mengqi, et al. "A Cost-Effective, Aqueous-Solution-Processed Cathode Interlayer Based on Organosilica Nanodots for Highly Efficient and Stable Organic Solar Cells." Advanced Materials (2020).

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