Author/Authors :
Ahn، نويسنده , , David Y.H. and Kim، نويسنده , , D.S. and Park، نويسنده , , J.Y. and Park، نويسنده , , Y.W. and Lee، نويسنده , , C.H and Hwang، نويسنده , , D.H. and Zyung، نويسنده , , T.، نويسنده ,
Abstract :
We have studied the temporal and spectral evolution of the photoluminescence (PL) in a highly luminescent poly(2,5bis (dimethyloctylsilyl)-1,4-phenylenevinylene) in the temperature range between 12 and 300 K using the ps time-resolved PL system. The PL spectra are narrower compared with an absorption spectrum and show a red-shift as time progresses after photoexcitation, implying that excitons are generated in a distribution of conjugation lengths and migrate towards longer conjugated segments.
