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Phenothiazine Semiconducting Polymer for Light‐Emitting Diodes
Author(s) -
Elkassih Sussana A.,
Sista Prakash,
Magurudeniya Harsha D.,
Papadimitratos Alexios,
Zakhidov Anvar A.,
Biewer Michael C.,
Stefan Mihaela C.
Publication year - 2013
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200642
Subject(s) - electroluminescence , materials science , polymer , photoluminescence , indium tin oxide , chromaticity , quantum yield , stille reaction , pedot:pss , polymer chemistry , copolymer , photochemistry , optoelectronics , chemistry , thin film , nanotechnology , optics , fluorescence , composite material , physics , layer (electronics)
Phenothiazine alternating copolymer poly{4,8‐bis(5‐dodecylthiophene‐2‐yl)benzo[1,2‐ b :4,5‐ b′ ]dithiophene‐ alt ‐(10‐decylphenothiazine)} ( P1 ) is synthesized by Stille coupling polymerization. The synthesized polymer has an electrochemical bandgap of 1.61 eV and displays good photoluminescence with a quantum yield of 63.3%. The polymer is tested as a light‐emitting material in polymeric light‐emitting diodes (PLEDs) with a device structure of indium tin oxide (ITO)/poly(3,4‐ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS)/polymer/Cs 2 CO 3 /Al. The devices display an orange‐yellow electroluminescence (Commission Internationale de l'Eclairage (CIE) 1931 color‐space chromaticity diagram: x = 0.5355 and y = 0.4611) with a maximum brightness of 3130 cd m −2 at an applied voltage of 10 V.