ELECTRO-MODULATION SPECTROSCOPY ON EXCITONS IN BETA-CAROTENE AND RELATED POLYENES

Authors
KODA T ISHIGURO A KANETA N KISHIDA H TOKURA Y ISHIKAWA K
Citation
T. Koda et al., ELECTRO-MODULATION SPECTROSCOPY ON EXCITONS IN BETA-CAROTENE AND RELATED POLYENES, Synthetic metals, 71(1-3), 1995, pp. 1723-1724
Citations number
6
Categorie Soggetti
Physics, Condensed Matter","Metallurgy & Metallurigical Engineering
Journal title
Synthetic metals → ACNP
ISSN journal
03796779
Volume
71
Issue
1-3
Year of publication
1995
Pages
1723 - 1724
Database
ISI
SICI code
0379-6779(1995)71:1-3<1723:ESOEIB>2.0.ZU;2-3
Abstract
The exciton spectra have been investigated on thin films of beta-carot ene and related polyenes, having all-trans conformation. By using elec tro-modulation technique, it has been found that there is a one-photon forbidden n(1)A(g) exciton in beta-carotene film at about 4.0 eV abov e the lowest allowed 1(1)B(u) exciton at 2.25 eV at 77K.