This title appears in the Scientific Report :
2019
Please use the identifier:
http://hdl.handle.net/2128/23755 in citations.
Please use the identifier: http://dx.doi.org/10.1038/s41467-019-13563-x in citations.
Controlling energy levels and Fermi level en route to fully tailored energetics in organic semiconductors
Controlling energy levels and Fermi level en route to fully tailored energetics in organic semiconductors
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 o...
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Personal Name(s): | Warren, Ross (Corresponding author) |
---|---|
Privitera, Alberto / Kaienburg, Pascal / Lauritzen, Andreas E. / Thimm, Oliver / Nelson, Jenny / Riede, Moritz K. | |
Contributing Institute: |
Photovoltaik; IEK-5 |
Published in: | Nature Communications, 10 (2019) 1, S. 5538 |
Imprint: |
[London]
Nature Publishing Group UK
2019
|
PubMed ID: |
31804495 |
DOI: |
10.1038/s41467-019-13563-x |
Document Type: |
Journal Article |
Research Program: |
Solar cells of the next generation |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1038/s41467-019-13563-x in citations.
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. |