Journal
CHEMISTRY OF MATERIALS
Volume 20, Issue 18, Pages 5816-5821Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm800898u
Keywords
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Funding
- National Science Council [NSC 95-2113-M002-021-MY3]
- Thematic Project
- Academia Sinica
- Ministry of Education of Taiwan
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Electrochemically deposited layer (EDL) prepared from electropolymerization of oligo(5-vinyl-2-nitrobenzyl triphenylamine-4-carboxylate) on conductive indium tin oxide glass (ITO) showed photolithographic properties as well as good hole-injection and transport properties. Under the optimized conditions, the polymeric light-emitting device (PLED) of ITO/EDL/polyvinylcarbazole(PVK)-Ir(PPY)(3)[2-bihenylyl-5-(4'-tert-butylphenyi)oxadiazole] (PBD)/Ma-Ag had a turn-on voltage of 13.5 V (100 cd/m(2)) with a maximum brightness of 9100 cd/m(2) and the current efficiency of 10.3 cd/A. When the EDL was exposed to UV liight (365 nm) through a patterned photomask and developed in CH2Cl2, a positive image was obtained. After irradiation for 8 min through a band-pass filter (17 mW/cm(2)) by a Xeon lamp, the EDL became soluble and could be depleted completely in CH,Cl,. Patterned PLED device was also fabricated by this technique.
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