publication detail

Renormalization of the valence and conduction bands of (C6H5C2H4NH3)2PbI4 hybrid perovskite

AUTHORS

  • Lee Min-I
  • Khan Saleem Ayaz
  • Mrezguia Hela
  • Barragán Ana
  • Nair Maya N
  • Khelidj Hamza
  • Ksari Younal
  • Giovanelli Luca
  • Themlin Jean-Marc
  • Lédée Ferdinand
  • Trippé-Allard Gaëlle
  • Deleporte Emmanuelle
  • Taleb-Ibrahimi Amina
  • Minár Ján
  • Tejeda Antonio

Document type

Journal articles

Résumé

Quasi two-dimensional hybrid organic-inorganic perovskites (HOIPs) have been rediscovered recently for photovoltaics due to a higher stability than other HOIPs. We focus here on the electronic structure of the 2D perovskite (C6H5C2H4NH3)2PbI4. We perform an experimental k-resolved determination of the valence and conduction bands by angle-resolved photoemission spectroscopy (ARPES) and inverse photoemission spectroscopy (IPES). The experimental and theoretical dispersions are compared. The valence band width is in agreement with that of renormalized theoretical bands, while no significative renormalization is observed for the conduction band. The effect of the spin-orbit coupling in the conduction band is also experimentally observed.

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