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
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Creator |
LU, LP
FINLAYSON, CE KABRA, D ALBERT-SEIFRIED, S SONG, MH HAVENITH, RWA TU, GL HUCK, WTS FRIEND, RH |
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Subject |
conjugated polymers
light-emitting diodes (LEDs) organic electronics FLUORENE-BASED COPOLYMERS SOLAR-CELLS DIODES |
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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.
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Publisher |
WILEY-V C H VERLAG GMBH
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Date |
2014-10-15T17:13:46Z
2014-10-15T17:13:46Z 2013 |
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Type |
Article
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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 |
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Language |
en
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