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  Accurate Band Gap Predictions of Semiconductors in the Framework of the Similarity Transformed Equation of Motion Coupled Cluster Theory

Dittmer, A., Izsák, R., Neese, F., & Manganas, D. (2019). Accurate Band Gap Predictions of Semiconductors in the Framework of the Similarity Transformed Equation of Motion Coupled Cluster Theory. Inorganic Chemistry, 58(14), 9303-9315. doi:10.1021/acs.inorgchem.9b00994.

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 Creators:
Dittmer, Anneke1, Author              
Izsák, Róbert2, Author              
Neese, Frank3, Author              
Manganas, Dimitrios1, Author              
Affiliations:
1Research Group Manganas, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_2541709              
2Research Group Izsák, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_2541707              
3Research Department Neese, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_2541710              

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 Abstract: In this work, we present a detailed comparison between wavefunction-based and particle/hole techniques for the prediction of band gap energies of semiconductors. We focus on the comparison of the back-transformed Pair Natural Orbital Similarity Transformed Equation of Motion Coupled-Cluster (bt-PNOSTEOM-CCSD) method with Time Dependent Density Functional Theory (TDDFT) and Delta Self Consistent Field/DFT (Δ-SCF/DFT) that are employed to calculate the band gap energies in a test set of organic and inorganic semiconductors. Throughout, we have used cluster models for the calculations that were calibrated by comparing the results of the cluster calculations to periodic DFT calculations with the same functional. These calibrations were run with cluster models of increasing size until the results agreed closely with the periodic calculation. It is demonstrated that bt-PNO-STEOM-CC yields accurate results that are in better than 0.2 eV agreement with the experiment. This holds for both organic and inorganic semiconductors. The efficiency of the employed computational protocols is thoroughly discussed. Overall, we believe that this study is an important contribution that can aid future developments and applications of excited state coupled cluster methods in the field of solid-state chemistry and heterogeneous catalysis.

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Language(s): eng - English
 Dates: 2019-04-092019-06-262019-07-15
 Publication Status: Published in print
 Pages: 13
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.inorgchem.9b00994
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Title: Inorganic Chemistry
  Abbreviation : Inorg. Chem.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 58 (14) Sequence Number: - Start / End Page: 9303 - 9315 Identifier: ISSN: 0020-1669
CoNE: https://pure.mpg.de/cone/journals/resource/0020-1669