کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1488267 | 1510718 | 2014 | 6 صفحه PDF | دانلود رایگان |
• Spray-coating method and VPP were combined for the synthesis of PEDOT thin film.
• Spray-coating method and a shadow mask were used to make a PEDOT electrode pattern.
• Best conditions of spray coating are 18 cm and 50 s of spray distance and time at room temperature.
In this study, spray-coating has been opted to prepare patterned Poly(3,4-ethylenedioxythiophene) (PEDOT) electrodes for an organic thin film transistor (OTFT). The conducting polymer was grown via the vapor phase polymerization (VPP) method. The film quality of VPP-PEDOT critically relies on the uniformity of oxidant film selectively patterned on a thermally oxidized Si-wafer surface prior to the polymerization. Therefore, to improve the uniformity of the oxidant film, this study tried to discover best conditions of spray-coating. Several different temperatures of Si-wafer substrate, distances from nozzle to wafer, and spray times were tested during the spray coating process. Then, sprayed oxidant films and vapor phase-polymerized PEDOT patterns were characterized by several thin film analyzing tools such as FE-SEM and optical microscope. The characterization found that the best conditions of spray coating are room temperature, 18 cm, and 50 s of substrate temperature, spray distance, and time, respectively.
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Journal: Materials Research Bulletin - Volume 57, September 2014, Pages 197–202