The band gap excitons in PbI2

Le Chi Thanh*, C. Depeursinge, F. Levy, E. Mooser

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

51 Scopus citations


Reflection spectra of the layered semiconductor PbI2 have been measured in the band gap region at 1.5 °K. Unlike previous results, they can be interpreted in terms of a normal ( 1 n2) Wannier exciton series. The corresponding ground state ionization energy is found to be about 30 meV. The multitude of exciton lines observed in most crystals can be ascribed to polytypism.

Original languageEnglish (US)
Pages (from-to)699-702
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Issue number7-8
StatePublished - 1975
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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