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