MULTIPHONON RAMAN-SCATTERING ENHANCED BY RESONANCE WITH BAND GAP-A(G)LUMINESCENCE STATE IN TRANSPOLYACETYLENE

Authors
WATANABE T KUBO T ISHIKAWA K TAKEZOE H FUKUDA A
Citation
T. Watanabe et al., MULTIPHONON RAMAN-SCATTERING ENHANCED BY RESONANCE WITH BAND GAP-A(G)LUMINESCENCE STATE IN TRANSPOLYACETYLENE, JPN J A P 2, 33(1A), 1994, pp. 120000048-120000051
Citations number
20
Categorie Soggetti
Physics, Applied
Journal title
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS → ACNP
Volume
33
Issue
1A
Year of publication
1994
Pages
120000048 - 120000051
Database
ISI
SICI code
Abstract
Emission spectra excited in the exciton forming absorption region (1.4 2-1.71 eV) of trans-polyacetylene have been obtained at room temperatu re, 77 K and 4.2 K. The overtones and combinations of fundamentals are remarkably enhanced only when they overlap with the near-infrared lum inescence peaking at 1.24 eV. These facts suggest the similarity betwe en trans- and cis-(CH)x in optical and photoelectric responses at leas t near their respective intrinsic absorption characterized by the trip let vibronic structure.