Observation of discrete molecular structures in glassy PxSe1-x by Raman spectroscopy

R. T. Phillips, D. Wolverson, M. S. Burdis, Y. Fang

Research output: Contribution to journalArticlepeer-review


We report conclusive evidence for the existence of molecular local ordering in four phosphorus-selenium glasses. The compositions were chosen to span the P-rich glass-forming region and were P2Se, P3Se, P4Se, and P0.84Se0.16. Raman spectra show unequivocally the existence in each glass of well-defined P4Se3 cage molecules. All nine Raman-active internal modes of this molecule have been observed, with a clear trend of reduction of their intensity as the P content is increased. We find that these materials behave as a matrix-supported assembly of P4Se3 molecules.

Original languageEnglish
Pages (from-to)2574-2577
Number of pages4
JournalPhysical Review Letters
Issue number23
Publication statusPublished - 1 Jan 1989

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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