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Computational Microscopy of Spatial Dopant Distribution in Conjugated Polymer
Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-6078-3006
2024 (English)In: Advanced Electronic Materials, E-ISSN 2199-160XArticle in journal (Refereed) Epub ahead of print
Abstract [en]

Conjugated organic polymers are becoming increasingly important for numerous applications due to their tunable properties, which are often optimized through doping. This study employs molecular dynamics simulations to investigate the distribution of the molecular dopant Mo(tfd-COCF3)3 in the conjugated polymer p(g42T-T), aiming to compare the theoretical findings with the experimental results of Persson et al., who used electron tomography to explore the dopant's 3D spatial distribution (Nanoscale, 2022, 14, 15404). Simulations reveal a random dopant distribution with no evidence of clustering, contrasting with Persson et al.'s observations of isolated molecules and small clusters. The discrepancy is suggested to be due to a possible difference in dopant density between the simulations and the experimental system, and potential explanations for this difference are proposed. The study highlights the need for further experimental and theoretical efforts to resolve these apparent discrepancies in dopant distributions.

Place, publisher, year, edition, pages
WILEY , 2024.
Keywords [en]
conducting polymers; doping; molecular dynamics simulations
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-210147DOI: 10.1002/aelm.202400662ISI: 001360437800001OAI: oai:DiVA.org:liu-210147DiVA, id: diva2:1917596
Note

Funding Agencies|Swedish Research Council [2022-06725]; Knut and Alice Wallenberg Foundation (Project "Stable Doping of Organic Semiconductors") - Swedish Research Council

Available from: 2024-12-03 Created: 2024-12-03 Last updated: 2024-12-03

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