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Autoionization of higher excited states generated by two-photon absorption in p-terphenyl crystals

✍ Scribed by Ryuzi Katoh; Masahiro Kotani

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 411 KB
Volume: 188
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(92)85092-o

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✦ Synopsis

It has been found that higher excited states, populated by two-photon absorption, ionize with an effkiency which, in the energy range of 5.3-6.4 eV, is independent of the energy of the excitation. This behavior is similar to that observed in sequential twostep excitation (exciton photoionization) and indicates that the higher excited states rapidly relax to a lower-lying state which autoionizes, irrespective of the mode of excitation. Results of improved measurements of exciton photoionization are also presented.

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