Uncovering solvent-engineering mechanisms in Y6:PM6 solar cells

Article Chemistry, Physical

1-Chloronaphthalene-Induced Donor/Acceptor Vertical Distribution and Carrier Dynamics Changes in Nonfullerene Organic Solar Cells and the Governed Mechanism

Xinjun He et al.

Summary: Tuning the vertical distribution of electron donors and acceptors through additives plays a crucial role in improving the performance and efficiency of organic solar cells (OSCs). This study provides solid evidence that the commonly used 1-chloronaphthalene (CN) additive can effectively tune the vertical distribution and significantly enhance the performance of OSCs. The findings offer insights into the understanding and construction of high-performance OSCs.

SMALL METHODS (2022)

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Article Chemistry, Physical

Preaggregation in Solution Producing Multiple Crystal Forms of Y6 Corresponding to a Variation of Miscibility in PM6-Based Ternary Solar Cells

Ge Yao et al.

Summary: This article investigates the impact of preaggregation on the photovoltaic performance and morphological evolution of PM6:Y6 system, and finds that selecting suitable solvent and additives can enhance the power conversion efficiency of solar cells. Additionally, the solvent and additives have significant effects on the preaggregation matching and miscibility of components.

ACS APPLIED ENERGY MATERIALS (2022)

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Article Chemistry, Multidisciplinary

18.01% Efficiency organic solar cell and 2.53% light utilization efficiency semitransparent organic solar cell enabled by optimizing PM6:Y6 active layer morphology

Kuibao Yu et al.

Summary: Optimizing the morphology of the photoactive layer is a simple yet promising approach to improve the power conversion efficiencies of organic solar cells. Different post-processing treatments, including thermal annealing and solvent annealing, were compared to investigate their effects on device performances. The results showed that solvent annealing effectively improved the distribution and aggregation of polymer donors and small molecule acceptors, leading to an optimized active layer film morphology and higher conversion efficiency. In addition, a relatively high light utilization efficiency was achieved by utilizing a transparent electrode, resulting in a remarkable power conversion efficiency and visible-light transmittance.

SCIENCE CHINA-CHEMISTRY (2022)

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Article Chemistry, Multidisciplinary

Identifying the Signatures of Intermolecular Interactions in Blends of PM6 with Y6 and N4 Using Absorption Spectroscopy

Daniel Kroh et al.

Summary: The interaction behavior of blend films formed by the donor polymer PM6 and two nonfullerene acceptors Y6 and N4 was investigated, revealing the influence of acceptor aggregation on the efficiency of organic solar cells.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Physical

Resolving the Spin Coating Process via In Situ Transmission Measurements

Timo Raab et al.

Summary: This study investigates the spin coating process of a P3HT/PC71BM blend and reveals that it can be divided into three phases. The crystallization phase has the most significant influence on the final morphology of the film.

JOURNAL OF PHYSICAL CHEMISTRY C (2022)

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Article Multidisciplinary Sciences

A general approach to high-efficiency perovskite solar cells by any antisolvent

Alexander D. Taylor et al.

Summary: The authors report a general method for fabricating highly efficient perovskite solar cells using any antisolvent by manipulating the application rate. A detailed study of 14 different antisolvents revealed two key factors affecting film quality, leading to power conversion efficiencies exceeding 21% in devices made from a wide range of precursor chemistries.

NATURE COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences