Journal article
Controlling energy levels and Fermi level en route to fully tailored energetics in organic semiconductors
- Abstract:
- Simultaneous control over both the energy levels and Fermi level, a key breakthrough for inorganic electronics, has yet to be shown for organic semiconductors. Here, energy level tuning and molecular doping are combined to demonstrate controlled shifts in ionisation potential and Fermi level of an organic thin film. This is achieved by p-doping a blend of two host molecules, zinc phthalocyanine and its eight-times fluorinated derivative, with tunable energy levels based on mixing ratio. The doping efficiency is found to depend on host mixing ratio, which is explained using a statistical model that includes both shifts of the host's ionisation potentials and, importantly, the electron affinity of the dopant. Therefore, the energy level tuning effect has a crucial impact on the molecular doping process. The practice of comparing host and dopant energy levels must consider the long-range electrostatic shifts to consistently explain the doping mechanism in organic semiconductors.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Version of record, pdf, 754.0KB, Terms of use)
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- Publisher copy:
- 10.1038/s41467-019-13563-x
Authors
+ RCUK | Science and Technology Facilities Council (STFC)
More from this funder
- Grant:
- CLASP, ST/L003309/1
- Publisher:
- Nature Research
- Journal:
- Nature Communications More from this journal
- Volume:
- 10
- Issue:
- 1
- Article number:
- 5538
- Publication date:
- 2019-12-05
- Acceptance date:
- 2019-11-12
- DOI:
- ISSN:
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2041-1723
- Pmid:
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31804495
- Language:
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English
- Pubs id:
-
pubs:1077272
- UUID:
-
uuid:47cd6565-3e93-4604-bb53-5b3a6c4fba93
- Local pid:
-
pubs:1077272
- Source identifiers:
-
1077272
- Deposit date:
-
2019-12-18
Terms of use
- Copyright holder:
- Warren et al
- Copyright date:
- 2019
- Notes:
-
© The Author(s) 2019. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the
article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
- Licence:
- CC Attribution (CC BY)
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