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Proceedings Paper

Excitonic emission of electrons from aromatic hydrocarbon crystals
Author(s): Masaki Ono; Ryuzi Katoh; Masahiro Kotani
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Paper Abstract

Electron emission has been observed with crystals of pyrene, (alpha) -perylene and anthracene excited with photons whose energies are less than the threshold for conventional monophotonic emission. It has been established that exciton fusion is responsible for this emission. In the case of pyrene, the lifetime of excitons observed through the excitonic photoemission is the same with that obtained from the fluorescence decay, whereas in (alpha) -perylene and anthracene the lifetime obtained from photoemission experiments is shorter compared to the fluorescence lifetime. It is considered that fluorescence measures the lifetime of excitons in the bulk of a crystal, whereas electron emission of this type probes excitons at the surface.

Paper Details

Date Published: 9 February 1995
PDF: 6 pages
Proc. SPIE 2362, International Conference on Excitonic Processes in Condensed Matter, (9 February 1995); doi: 10.1117/12.200952
Show Author Affiliations
Masaki Ono, Gakushuin Univ. (Japan)
Ryuzi Katoh, Gakushuin Univ. (Japan)
Masahiro Kotani, Gakushuin Univ. (Japan)

Published in SPIE Proceedings Vol. 2362:
International Conference on Excitonic Processes in Condensed Matter
Jai Singh, Editor(s)

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