Volume 6, Issue 1 2100916
Research Article
Free to Read

3D Nanoscale Morphology Characterization of Ternary Organic Solar Cells

Ting Yu

Ting Yu

Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, Québec, J3X 1S2 Canada

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Wanting He

Wanting He

Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, Québec, J3X 1S2 Canada

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Maziar Jafari

Maziar Jafari

Département de Chimie, Université du Québec à Montréal, Montréal, Québec, H2L 2C4 Canada

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Tugrul Guner

Tugrul Guner

Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, Québec, J3X 1S2 Canada

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Pandeng Li

Pandeng Li

Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, Québec, J3X 1S2 Canada

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Mohamed Siaj

Mohamed Siaj

Département de Chimie, Université du Québec à Montréal, Montréal, Québec, H2L 2C4 Canada

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Ricardo Izquierdo

Ricardo Izquierdo

Département de Génie Électrique, École de Technologie Supérieure, Montréal, Québec, H3C 1K3 Canada

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Baoquan Sun

Baoquan Sun

Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Institute of Functional Nano and Soft Materials (FUNSOM), Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123 P. R. China

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Gregory C. Welch

Gregory C. Welch

Department of Chemistry, University of Calgary, Calgary, Alberta, T2N 1N4 Canada

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Aycan Yurtsever

Aycan Yurtsever

Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, Québec, J3X 1S2 Canada

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Dongling Ma

Corresponding Author

Dongling Ma

Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique (INRS), Varennes, Québec, J3X 1S2 Canada

E-mail: [email protected]

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First published: 07 December 2021
Citations: 10

Abstract

It is highly desired to develop advanced characterization techniques to explore the 3D nanoscale morphology of the complicated blend film of ternary organic solar cells (OSCs). Here, ternary OSCs are constructed by incorporating the nonfullerene acceptor perylenediimide (PDI)-diketopyrrolopyrrole (DPP)-PDI and their morphology is characterized in depth to understand the performance variation. In particular, photoinduced force microscopy (PiFM) coupled with infrared laser spectroscopy is conducted to qualitatively study the distribution of donor and acceptors in the blend film by chemical identification and to quantitatively probe the segmentation of domains and the domain size distribution after PDI-DPP-PDI acceptor incorporation by PiFM imaging and data processing. In addition, the energy-filtered transmission electron microscopy with energy loss spectra is utilized to visualize the nanoscale morphology of ultrathin cross-sections in the configuration of the real ternary device for the first time in the field of photovoltaics. These measurements allow to “view” the surface and cross-sectional morphology and provide strong evidence that the PDI-DPP-PDI acceptor can suppress the aggregation of the fullerene molecules and generate the homogenous morphology with a higher-level of the molecularly mixed phase, which can prevent the charge recombination and stabilize the morphology of photoactive layer.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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