Influences of oligomer length on carrier-transport properties of oligofluorenes | Zendy

ChihI Wu | Zendy; TsungLi Liu | Zendy; YuTing Lin | Zendy; WenYi Hung | Zendy; TungHuei Ke | Zendy; KenTsung Wong | Zendy; TengChih Chao | Zendy

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Influences of oligomer length on carrier-transport properties of oligofluorenes

Author(s) -

ChihI Wu,

TsungLi Liu,

YuTing Lin,

WenYi Hung,

TungHuei Ke,

KenTsung Wong,

TengChih Chao

Publication year - 2004

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1784031

Subject(s) - oligomer , ambipolar diffusion , materials science , amorphous solid , polymer , chemical physics , conjugated system , electron mobility , optoelectronics , crystallography , chemistry , polymer chemistry , physics , electron , quantum mechanics , composite material

In this letter, carrier-transport properties of a homologous series of oligofluorenes with C9 diaryl substitution have been examined. These substituted oligofluorenes possess stable amorphous states, ambipolar carrier-transport properties, and processability to thin films for a range of oligomer lengths, rendering feasible investigating dependence of carrier transport on oligomer length in disordered systems. It is found that carrier mobilities of these oligofluorenes show a clear decreasing trend with the oligomer length. Such findings are in contrast with previous observations for crystalline oligomers and impose certain implications in carrier transport of conjugated polymers and oligomers.

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