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

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

doi:10.1021/acsami.1c05133

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

Journal Article · Thu May 06 00:00:00 EDT 2021 · ACS Applied Materials and Interfaces

DOI:https://doi.org/10.1021/acsami.1c05133· OSTI ID:1810736

Larrain, Felipe A. ^[1];

^[2]; Chang, Yi-Chien ^[2]; Rodriguez-Toro, Victor A. ^[2]; Abraham, Silja ^[2];

^[2]

Georgia Inst. of Technology, Atlanta, GA (United States). Center for Organic Photonics and Electronics (COPE); Univ. Adolfo Ibáñez, Santiago (Chile)
Georgia Inst. of Technology, Atlanta, GA (United States). Center for Organic Photonics and Electronics (COPE)

Molecular p-type electrical dopants have been proven useful to fine-tune the optoelectronic properties of bulk organic semiconductors and their interfaces. In this work, 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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Research Organization:: Georgia Institute of Technology, Atlanta, GA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); US Department of the Navy, Office of Naval Research (ONR); US Air Force Office of Scientific Research (AFOSR); Chilean National Commission for Scientific and Technological Research (CONICYT); National Science Foundation (NSF)

Grant/Contract Number:: NA0003921; NA0002576; N00014-14-1-0580; N00014-16-1-2520; FA9550-16-1-0168; 72150387; ECCS-1542174

OSTI ID:: 1810736

Journal Information:: ACS Applied Materials and Interfaces, Vol. 13, Issue 19; ISSN 1944-8244

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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