Fundamental Optical Absorption and Valence Bands in Alkali Silver Halide Crystals

Keiichi Edamatsu, Mikihiko Ikezawa, Kenji Sato, Shozo Kono, Takasi Sagawa

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Anisotropic fundamental optical absorption bands have been found at 4.4 eV in K2AgI3 and Rb2AgI3, and at 4.9 eV in Rb2AgBr3. The X-ray photoelectron spectrum of Rb2AgI3 indicates that the uppermost valence band is the p-band of halogen. Optical absorption spectra are interpreted in terms of transitions of the charge transfer type from the halogen to the silver ion. The photo-excitation in the fundamental absorption region have been observed to induce luminescence and a radiation damage effect at low temperature.

Original languageEnglish
Pages (from-to)1521-1524
Number of pages4
Journaljournal of the physical society of japan
Issue number5
Publication statusPublished - 1983

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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