Rational Third Component Choices Drive Enhanced Morphology and Efficiency in Ternary Blend Organic Solar Cells

Yadav, S and Pranav, M and Gangadharappa, C and Huss-Hansen, M and Schwartzkopf, M and Kjelstrup-Hansen, J and Knaapila, M and Patil, S (2024) Rational Third Component Choices Drive Enhanced Morphology and Efficiency in Ternary Blend Organic Solar Cells. In: ACS Energy Letters, 9 (10). pp. 5259-5267.

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Abstract

The impetus to add a third component in ternary blend organic solar cells (TBSCs) maximizes the light-harvesting capability of the active layer. Beyond this, the third component can perform other useful functions, such as enhancing the morphology and charge transport, and assisting in resonance energy transfer. Currently, there are no established guidelines for selecting the third component in TBSCs to optimize the organic solar cell (OSC) performance. By varying the chromophore chain length of perylene diimide (PDI) molecules, we revealed its influence on the morphology of the thin film and the efficiency of PM6:Y6 OSCs. Detailed optical and electrical characterization and morphological studies revealed that molecular size and PDIs� chromophore chain length are pivotal to improving the performance of OSCs. The PDI monomer acts as an additive to improve the morphology and light-harvesting capability of TBSCs. This study presents several significant findings, including the dual role of the third component, the influence of the chromophore chain length on morphology, and the dynamics of excited states. © 2024 American Chemical Society.

Item Type:	Journal Article
Publication:	ACS Energy Letters
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to Publishers.
Keywords:	Organic solar cells; Rational functions, Active Layer; Chains length; Light-harvesting; Organics; Perylene diimides; Perylenediimides; Resonance energy transfer; Solar cell performance; Ternary blends; Third component, Chain length
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	09 Nov 2024 17:40
Last Modified:	09 Nov 2024 17:40
URI:	http://eprints.iisc.ac.in/id/eprint/86665

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