Towards a general concentration quenching model of Bi3+ luminescence

Roy H.P. Awater, Pieter Dorenbos

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)


The vacuum referred binding energy of the electron in the Bi2+ ground state has been determined in 15 different compounds. This shows that the electron binding energy in the ground state of Bi2+ is at lower (more negative) energy compared to the electron binding energy in the excited state of Bi3+. This means that electron transfer from the excited state of one Bi3+ to a neighboring Bi3+, forming a Bi2+−Bi4+ pair, acts as a quenching route for the Bi3+ emission. Electron back transfer in the Bi2+−Bi4+ pair is then suggested to be the origin for the frequently observed pair emission. This paper shows that vacuum referred electron binding energy diagrams can provide a unique physical insight in the properties of inorganic compounds.

Original languageEnglish
Pages (from-to)487-489
JournalJournal of Luminescence
Publication statusPublished - 2017


  • Bi-pairs
  • Charge transfer
  • Quenching
  • Bi2+
  • Bi3+

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