FRENKEL EXCITON-STATES IN MICROCRYSTALLITES

Authors
TAKESHIMA M MATSUI AH
Citation
M. Takeshima et Ah. Matsui, FRENKEL EXCITON-STATES IN MICROCRYSTALLITES, Chemical physics letters, 266(1-2), 1997, pp. 135-138
Citations number
6
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
266
Issue
1-2
Year of publication
1997
Pages
135 - 138
Database
ISI
SICI code
0009-2614(1997)266:1-2<135:FEIM>2.0.ZU;2-J
Abstract
A theory of Frenkel exciton states in microcrystallites based on a mod el of the nearest neighbor interaction is developed. The theory is app lied to calculate the k = 0 component in the density of states in arom atic microcrystallites, whose characteristic feature is an intense sha rp band followed by a high-energy exponential tail. The theory also ex plains satisfactorily the spectral width of the excitation spectra, wh ich reflects the exciton bandwidth of bulk crystals.