Journal
ORGANIC ELECTRONICS
Volume 23, Issue -, Pages 151-157Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2015.04.023
Keywords
Lamination; Polymer; Doping; Molybdenum complex; Diffusion
Funding
- Princeton MRSEC of the National Science Foundation [DMR-0819860]
- National Science Foundation [DMR-1005892]
- Center for Interface Science: Solar-Electric Materials (CIS:SEM)
- Energy Frontier Research Center through the U.S. Department of Energy, Office of Basic Energy Sciences [DE-SC0001084]
- Office of Naval Research [N00014-11-1-0313]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1005892] Funding Source: National Science Foundation
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The spatial stability of the soluble p-dopant molybdenum tris[1-(methoxycarbonyl)-2-(trifluoromethyl)-ethane-1,2-dithiolene] in polymer and polymer blend films is investigated via secondary ion mass spectrometry and current-voltage measurements. Bi-layer and tri-layer model structures, P3HT/doped P3HT and P3HT: ICBA/doped P3HT/P3HT: ICBA respectively, are fabricated using soft-contact transfer lamination to study the diffusion of the dopant. While the dopant is very mobile in pure P3HT, it is far more stable at the interface with the P3HT: ICBA bulk heterojunction. Our findings suggest a promising route to achieve spatially-confined doping with long-term stability, leading to hole-collection/injection contacts for all-solution processed polymer devices. (C) 2015 Elsevier B.V. All rights reserved.
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