Fifth International Conference on Dynamical Processes in the Excited States of Solids / Dynamique des Etats Excités dans les Solides
J. Phys. Colloques 46 (1985) C7-129-C7-133
DOI: 10.1051/jphyscol:1985725
ENERGY BARRIER BETWEEN SELFTRAPPED AND DELOCALIZED EXCITON STATES IN QUASI ONE-DIMENSIONAL TETRACYANOPLATINATES ( I I)
G. Gliemann, W. Holzapfel et H. YersinUniversität Regensburg, Institüt für Physikalische und Theoretische Chemie, 8400 Regensburg, F.R.G.
Abstract
Single crystals of M[Pt(CN)4] · nH2O ( with M = Na2, Ba, KLi, ...) are highly anisotropic. In these compounds two different types of excitations are observed : localized selftrapped and delocalized exciton states . From the temperature dependence of the polarized emission of KLi[Pt(CN)4] · 2H2O the height of an energy barrier between the free and the selftrapped exciton states can be estimated. This barrier isresponsible for an activated relaxation into the selftrapped states .