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Title: On combining the conductor-like screening model and optimally tuned range-separated hybrid density functionals

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.5064730· OSTI ID:1532495
 [1]; ORCiD logo [2]; ORCiD logo [3]
  1. Friedrich-Schiller-Univ., Jena (Germany); Leibniz Institute of Photonic Technology (IPHT), Jena (Germany)
  2. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Friedrich-Schiller-Univ., Jena (Germany); Leibniz Institute of Photonic Technology (IPHT), Jena (Germany); Center for Energy and Environmental Chemistry Jena (Germany); SciClus GmbH & Co. KG, Jena (Germany)

Range-separated hybrid functionals whose range-separation parameter γ has been nonempirically tuned to a particular molecule have been shown to yield frontier orbital energies and other properties in very good agreement with experiments. Yet, many cases, such as organic optoelectronic devices, require the description of molecules embedded in an environment. This can be done by combining the γ-tuning procedure with polarizable continuum models in general and the very versatile conductor-like screening model in particular. There are at least two different ways of performing this combination. The partially vertical γ-tuning employs equilibrium solvation throughout. The strictly vertical γ-tuning, on the other hand, employs nonequilibrium solvation to obtain ionization energies. Here, we compare ground-state and excited-state properties of several different molecules relevant to organic optoelectronics that were obtained using both of the two different tuning procedures. While there are significant differences in the ground-state properties, we see virtually no difference in the excited-state properties. Given these conclusions, we find that both tuning procedures have to be used in conjunction for the correct description of both ground-state and excited-state properties.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; German Bundesministerium für Bildung und Forschung
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1532495
Journal Information:
Journal of Chemical Physics, Vol. 150, Issue 17; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

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