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从有机太阳能电池的体异质结层中选择性提取非富勒烯受体以详细分析微观结构

Selective Extraction of Nonfullerene Acceptors from Bulk-Heterojunction Layer in Organic Solar Cells for Detailed Analysis of Microstructure.

作者信息

Nakano Masahiro, Takahara Akira, Genda Kenji, Shahiduzzaman Md, Karakawa Makoto, Taima Tetsuya, Takahashi Kohshin

机构信息

Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa 920-1192, Japan.

Nanomaterials Research Institute (NanoMaRi), Kanazawa University, Ishikawa 920-1192, Japan.

出版信息

Materials (Basel). 2021 Apr 21;14(9):2107. doi: 10.3390/ma14092107.

DOI:10.3390/ma14092107
PMID:33919451
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8122272/
Abstract

Detailed analyses of the microstructures of bulk-heterojunction (BHJ) layers are important for the development of high-performance photovoltaic organic solar cells (OSCs). However, analytical methods for BHJ layer microstructures are limited because BHJ films are composed of a complex mixture of donor and acceptor materials. In our previous study on the microstructure of a BHJ film composed of donor polymers and fullerene-based acceptors, we analyzed donor polymer-only films after selectively extracting fullerene-based acceptors from the film by atomic force microscopy (AFM). Not only was AFM suitable for a clear analysis of the morphology of the donor polymers in the BHJ film, but it also allowed us to approximate the acceptor morphology by analyzing the pores in the extracted films. Herein we report a method for the selective extraction of nonfullerene acceptors (NFAs) from a BHJ layer in OSCs and provide a detailed analysis of the remaining BHJ films based upon AFM. We found that butyl glycidyl ether is an effective solvent to extract NFAs from BHJ films without damaging the donor polymer films. By using the selective extraction method, the morphologies of NFA-free BHJ films fabricated under various conditions were studied in detail. The results may be useful for the optimization of BHJ film structures composed of NFAs and donor polymers.

摘要

对体相异质结（BHJ）层的微观结构进行详细分析对于高性能有机太阳能电池（OSC）的发展至关重要。然而，由于BHJ薄膜由供体和受体材料的复杂混合物组成，用于分析BHJ层微观结构的方法有限。在我们之前关于由供体聚合物和富勒烯基受体组成的BHJ薄膜微观结构的研究中，我们通过原子力显微镜（AFM）从薄膜中选择性提取富勒烯基受体后，分析了仅含供体聚合物的薄膜。AFM不仅适用于清晰分析BHJ薄膜中供体聚合物的形态，还能通过分析提取薄膜中的孔隙来近似受体形态。在此，我们报告一种从OSC的BHJ层中选择性提取非富勒烯受体（NFA）的方法，并基于AFM对剩余的BHJ薄膜进行详细分析。我们发现丁基缩水甘油醚是一种从BHJ薄膜中提取NFA而不损坏供体聚合物薄膜的有效溶剂。通过使用选择性提取方法，详细研究了在各种条件下制备的无NFA的BHJ薄膜的形态。这些结果可能有助于优化由NFA和供体聚合物组成的BHJ薄膜结构。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/c88e2358f7be/materials-14-02107-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/0ddd7338ac6e/materials-14-02107-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/2de4a13552bd/materials-14-02107-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/a826fca5acf4/materials-14-02107-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/bf3a0e562b16/materials-14-02107-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/0f79a92d8c07/materials-14-02107-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/7b9d5b95973c/materials-14-02107-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/c88e2358f7be/materials-14-02107-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/0ddd7338ac6e/materials-14-02107-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/2de4a13552bd/materials-14-02107-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/a826fca5acf4/materials-14-02107-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/bf3a0e562b16/materials-14-02107-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/0f79a92d8c07/materials-14-02107-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/7b9d5b95973c/materials-14-02107-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9aec/8122272/c88e2358f7be/materials-14-02107-g007.jpg

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