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The Influence of Side-Chain Position on the Optoelectronic Properties of a Red-Emitting Conjugated Polymer

DSpace at IIT Bombay

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Title The Influence of Side-Chain Position on the Optoelectronic Properties of a Red-Emitting Conjugated Polymer
 
Creator LU, LP
FINLAYSON, CE
KABRA, D
ALBERT-SEIFRIED, S
SONG, MH
HAVENITH, RWA
TU, GL
HUCK, WTS
FRIEND, RH
 
Subject conjugated polymers
light-emitting diodes (LEDs)
organic electronics
FLUORENE-BASED COPOLYMERS
SOLAR-CELLS
DIODES
 
Description A study of the organic semiconductor F8TBT is presented, directly comparing a conventional form (F8TBT-out) with a form with varied alkyl side-chain position (F8TBT-in), in terms of optical properties and device performance in light-emitting-diodes (LEDs). Computational simulations of the side-chain position with respect to the TBT unit reveal geometrical differences between F8TBT-out and F8TBT-in. conjugation on the backbone of F8TBT-in is interrupted by a distortion of the benzothiadiazole ring, leading to a blue-shift of the absorption spectrum and increased photoluminescence quantum efficiency. Both conventional and hybrid LEDs demonstrate that devices with F8TBT-in show improved performance, as compared to F8TBT-out, illustrating how tuning the optoelectronic properties of conjugated polymers by varying the placement of side chains has an important role in device optimization.
 
Publisher WILEY-V C H VERLAG GMBH
 
Date 2014-10-15T17:13:46Z
2014-10-15T17:13:46Z
2013
 
Type Article
 
Identifier MACROMOLECULAR CHEMISTRY AND PHYSICS, 214(9)967-974
http://dx.doi.org/10.1002/macp.201200681
http://dspace.library.iitb.ac.in/jspui/handle/100/15300
 
Language en