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Electrochemical Stability and Ambipolar Charge Transport in Diketopyrrolopyrrole-Based Organic Materials

Ray, S and Panidi, J and Mukhopadhyay, T and Salzner, U and Anthopoulos, TD and Patil, S (2019) Electrochemical Stability and Ambipolar Charge Transport in Diketopyrrolopyrrole-Based Organic Materials. In: ACS Applied Electronic Materials, 1 (10). pp. 2037-2046.

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Official URL: https://doi.org/10.1021/acsaelm.9b00394


An important strategy for realizing flexible complementary circuits with organic semiconductors is to achieve balanced ambipolar charge transport properties with reduced anisotropy. Here, we present a series of star-shaped diketopyrrolopyrrole (DPP)-based organic materials synthesized for improved intermolecular charge transport while retaining the ambipolar charge transport properties of their linear counterparts. Steady-state UV-visible spectroscopic studies confirm that the oligomers are highly aggregated in the thin film as evidenced from appearance of prominent vibronic features and red-shifted absorption bands. Ambipolar transport properties of these materials were verified in organic field-effect transistors (OFETs). The results show that the star-shaped DPP systems have the potential to outperform their linear counterparts in devices. Copyright © 2019 American Chemical Society.

Item Type: Journal Article
Publication: ACS Applied Electronic Materials
Publisher: American Chemical Society
Additional Information: The copyright for this article belongs to Authors
Keywords: Absorption spectroscopy; Flexible electronics; Organic field effect transistors; Red Shift; Spectroscopic analysis; Stars; Transport properties, Ambipolar charge transports; Complementary circuits; Diketopyrrolopyrroles; Electrochemical stabilities; Organic materials; Spectroscopic studies; Steady state; Vibronic features, Carrier transport
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 04 Aug 2021 11:40
Last Modified: 04 Aug 2021 11:40
URI: http://eprints.iisc.ac.in/id/eprint/69080

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