Photoluminescence Probes Ion Insertion into Amorphous and Crystalline Regions of Organic Mixed Conductors
Abstract: Organic mixed ionic‐electronic conductors (OMIECs) have emerged as promising materials for a wide range of next‐generation technologies, including bioelectronics and neuromorphic computing. The performance of these materials depends on the transport of ions through the polycrystalline polymer matrix as well as how the distribution of ions and polarons in crystalline and amorphous regions impacts electronic transport. However, it is often challenging to distinguish whether ions enter crystalline or amorphous regions. In this work, steady‐state and time‐resolved photoluminescence (PL) spectroelectrochemistry is used to probe initial ion insertion in crystalline and amorphous regions of the OMIEC material poly (3‐[2‐[2‐(2‐methoxyethoxy) ethoxy]ethyl]thiophene ‐2,5‐diyl) (P3MEEET) as a function of applied voltage. It is found that PL spectroelectrochemistry reports on the initial stages of electrochemical doping through the quenching of PL emission. By distinguishing between amorphous and crystalline contributions to the PL spectrum, ion insertion in crystalline and amorphous regions as a function of voltage is tracked. It is found that PL spectroelectrochemistry is much more sensitive to the initial injection of ions than complementary methods, highlighting its potential as a sensitive tool for interrogating ion injection in OMIECs.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Photoluminescence Probes Ion Insertion into Amorphous and Crystalline Regions of Organic Mixed Conductors ; day:23 ; month:05 ; year:2024 ; extent:10
Advanced functional materials ; (23.05.2024) (gesamt 10)
- Creator
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Collins, Garrett W.
Lone, Mohd Sajid
Jackson, Seth R.
Keller, Jolene N.
Kingsford, Rand L.
Noriega, Rodrigo
Bischak, Connor G.
- DOI
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10.1002/adfm.202403710
- URN
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urn:nbn:de:101:1-2405241417558.203085198272
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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14.08.2025, 10:53 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Collins, Garrett W.
- Lone, Mohd Sajid
- Jackson, Seth R.
- Keller, Jolene N.
- Kingsford, Rand L.
- Noriega, Rodrigo
- Bischak, Connor G.
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