Hund excitations and the efficiency of Mott solar cells

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{
  "id": "371", 
  "updated": "2020-04-27T00:00:00+00:00", 
  "metadata": {
    "version": 1, 
    "contributors": [
      {
        "givennames": "Francesco", 
        "affiliations": [
          "Department of Physics, University of Fribourg, 1700 Fribourg, Switzerland"
        ], 
        "email": "francesco.petocchi@unifr.ch", 
        "familyname": "Petocchi"
      }, 
      {
        "givennames": "Sophie", 
        "affiliations": [
          "Materials Theory, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Z\u00fcrich, Switzerland"
        ], 
        "email": "sophie.beck@mat.ethz.ch", 
        "familyname": "Beck"
      }, 
      {
        "givennames": "Claude", 
        "affiliations": [
          "Materials Theory, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Z\u00fcrich, Switzerland"
        ], 
        "email": "claude.ederer@mat.ethz.ch", 
        "familyname": "Ederer"
      }, 
      {
        "givennames": "Philipp", 
        "affiliations": [
          "Department of Physics, University of Fribourg, 1700 Fribourg, Switzerland"
        ], 
        "email": "philipp.werner@unifr.ch", 
        "familyname": "Werner"
      }
    ], 
    "title": "Hund excitations and the efficiency of Mott solar cells", 
    "_oai": {
      "id": "oai:materialscloud.org:371"
    }, 
    "keywords": [
      "out of equilibrium physics", 
      "ERC", 
      "solar cells", 
      "MARVEL/DD5", 
      "DFT"
    ], 
    "publication_date": "Apr 27, 2020, 00:00:00", 
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    "references": [
      {
        "comment": "Paper in which the results are described", 
        "doi": "10.1103/PhysRevB.100.075147", 
        "citation": "F. Petocchi, S. Beck, C. Ederer, P. Werner, Phys. Rev. B 100, 075147 (2019)", 
        "url": "https://doi.org/10.1103/PhysRevB.100.075147", 
        "type": "Journal reference"
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        "comment": "Maximally-localised Wannier functions software", 
        "doi": "", 
        "citation": "A. A. Mostofi, J. R. Yates, Y.-S. Lee, I. Souza, D. Vanderbilt, and N. Marzari, Computer Physics Communications, 178, 685 (2008).", 
        "url": "http://www.wannier.org/", 
        "type": "Software"
      }, 
      {
        "comment": "Exact-Diagonalization DMFT solver and related libraries", 
        "doi": "", 
        "citation": "https://github.com/aamaricci", 
        "url": "https://github.com/aamaricci", 
        "type": "Software"
      }, 
      {
        "comment": "Non-equilibrium software and related libraries", 
        "doi": "", 
        "citation": "M. Sch\u00fcler, D. Gole\u017e, Y. Murakami, N. Bittner, A. Hermann, H. U. R. Strand, P. Werner, M. Eckstein, arXiv:1911.01211", 
        "url": "https://github.com/nessi-cntr/nessi", 
        "type": "Software"
      }
    ], 
    "description": "We study the dynamics of photoinduced charge carriers in semirealistic models of LaVO3 and YTiO3 polar heterostructures. It is shown that two types of impact ionization processes contribute to the carrier multiplication in these strongly correlated multiorbital systems: The first mechanism involves local spin state transitions, while the second mechanism involves the scattering of high-kinetic-energy carriers. Both processes act on the 10-fs timescale and play an important role in the harvesting of high-energy photons in solar cell applications. As a consequence, the optimal gap size for Mott solar cells is substantially smaller than for semiconductor devices.", 
    "status": "published", 
    "license": "Creative Commons Attribution 4.0 International", 
    "conceptrecid": "370", 
    "is_last": true, 
    "mcid": "2020.0041/v1", 
    "edited_by": 98, 
    "id": "371", 
    "owner": 16, 
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    "doi": "10.24435/materialscloud:2020.0041/v1"
  }, 
  "revision": 1, 
  "created": "2020-05-12T13:53:57.274297+00:00"
}