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The β‐Phase of Poly(9,9‐dioctylfluorene) as a Potential System for Electrically Pumped Organic Lasing
Author(s) -
Rothe C.,
Galbrecht F.,
Scherf U.,
Monkman A.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200600901
Subject(s) - materials science , lasing threshold , optoelectronics , phase (matter) , dopant , exciton , polyfluorene , amorphous solid , amplified spontaneous emission , doping , optics , laser , nanotechnology , electroluminescence , condensed matter physics , crystallography , wavelength , chemistry , physics , organic chemistry , layer (electronics)
The β‐phase of poly(9,9‐dioctylfluorene) (PFO) shows a very low amplified spontaneous emission threshold because of its well‐resolved emission spectrum. Within the amorphous PFO, the β‐phase sites act similar to a dopant as they trap excitons and charges. The figure shows the blue‐light‐emitting β‐phase in a PFO solution.