Increasing Volume in Conjugated Polymers to Facilitate Electrical Doping with Phosphomolybdic Acid

Felipe A. Larrain; Canek Fuentes-Hernandez; Yi Chien Chang; Victor A. Rodriguez-Toro; Silja Abraham; Bernard Kippelen

doi:10.1021/acsami.1c05133

Increasing Volume in Conjugated Polymers to Facilitate Electrical Doping with Phosphomolybdic Acid

Felipe A. Larrain, Canek Fuentes-Hernandez, Yi Chien Chang, Victor A. Rodriguez-Toro, Silja Abraham, Bernard Kippelen

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Molecular p-type electrical dopants have been proven useful to fine-tune the optoelectronic properties of bulk organic semiconductors and their interfaces. Here, the volume in polymer films and its role in solution-based electrical p-type doping using phosphomolybdic acid (PMA) are studied. The polymer film volume was controlled using two approaches. One is based on heating both the PMA solution and the film prior to immersion. The second is based on coating the polymer film with a liquid blend that contains the PMA solution and a swelling solvent. 31P NMR and FTIR experiments indicate that the Keggin structure appears to be preserved throughout the doping process. Results show that increasing the polymer volume facilitates the infiltration of the PMA Keggin structure, which results in an increased electrical p-type doping level.

Original language	English
Pages (from-to)	23260-23267
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	13
Issue number	19
DOIs	https://doi.org/10.1021/acsami.1c05133
State	Published - 19 May 2021
Externally published	Yes

Keywords

electrical doping
organic electronics
organic photovoltaics

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10.1021/acsami.1c05133

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title = "Increasing Volume in Conjugated Polymers to Facilitate Electrical Doping with Phosphomolybdic Acid",

abstract = "Molecular p-type electrical dopants have been proven useful to fine-tune the optoelectronic properties of bulk organic semiconductors and their interfaces. Here, the volume in polymer films and its role in solution-based electrical p-type doping using phosphomolybdic acid (PMA) are studied. The polymer film volume was controlled using two approaches. One is based on heating both the PMA solution and the film prior to immersion. The second is based on coating the polymer film with a liquid blend that contains the PMA solution and a swelling solvent. 31P NMR and FTIR experiments indicate that the Keggin structure appears to be preserved throughout the doping process. Results show that increasing the polymer volume facilitates the infiltration of the PMA Keggin structure, which results in an increased electrical p-type doping level.",

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author = "Larrain, {Felipe A.} and Canek Fuentes-Hernandez and Chang, {Yi Chien} and Rodriguez-Toro, {Victor A.} and Silja Abraham and Bernard Kippelen",

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AU - Larrain, Felipe A.

AU - Fuentes-Hernandez, Canek

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AU - Rodriguez-Toro, Victor A.

AU - Abraham, Silja

AU - Kippelen, Bernard

PY - 2021/5/19

Y1 - 2021/5/19

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AB - Molecular p-type electrical dopants have been proven useful to fine-tune the optoelectronic properties of bulk organic semiconductors and their interfaces. Here, the volume in polymer films and its role in solution-based electrical p-type doping using phosphomolybdic acid (PMA) are studied. The polymer film volume was controlled using two approaches. One is based on heating both the PMA solution and the film prior to immersion. The second is based on coating the polymer film with a liquid blend that contains the PMA solution and a swelling solvent. 31P NMR and FTIR experiments indicate that the Keggin structure appears to be preserved throughout the doping process. Results show that increasing the polymer volume facilitates the infiltration of the PMA Keggin structure, which results in an increased electrical p-type doping level.

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Increasing Volume in Conjugated Polymers to Facilitate Electrical Doping with Phosphomolybdic Acid

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Keywords

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