Theory of defect-induced localized exciton states in polyfluorenes
Küçük Resim Yok
Tarih
2009
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
We outline a general theory for defect-induced localized exciton states in polyfluorenes. Working within the framework of the one-dimensional Frenkel exciton model. we characterize the defect as monomer that has a different optical transition frequency and modified nearest-neighbor interaction parameters. We obtain an exact expression for the energy of the localized exciton state in terms of the optical transition frequency and interaction parameters relative to those of the defect-free system. We also investigate the spatial extent of the localized states and their relative optical activity. The theory IS used to analyze the fluorescence associated with ketonic defect sites in poly(di-n-octylfluorene) (PF8) (C) 2009 Elsevier B V All rights reserved
Açıklama
International Conference on Luminescence and Optical Spectroscopy of Condensed Matter (ICL'08) -- JUL 07-11, 2008 -- Univ Lumiere Lyon 2, Lyon, FRANCE
Anahtar Kelimeler
Frenkel excitons, Defect states, Polyfluorenes, PF8, Photoluminescence
Kaynak
Journal of Luminescence
WoS Q Değeri
Q1
Scopus Q Değeri
Q2
Cilt
129
Sayı
12
