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http://dx.doi.org/10.7736/KSPE.2013.30.6.567

Development of Spray Thin Film Coating Method using an Air Pressure and Electrostatic Force  

Kim, Jung Su (Printed Electronics Research Team, PEMS Co. Ltd.)
Kim, Dong Soo (School of Global Convergence Studies, Hanbat National Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.30, no.6, 2013 , pp. 567-572 More about this Journal
Abstract
In many electro-devices, the vacuum process is used as the manufacturing process. However, the vacuum process has a problem, it is difficult to apply to a continuous process such as a R2R(roll to roll) printing process. In this paper, we propose an ESD (electro static deposition) printing process has been used to apply an organic solar cell of thin film forming. ESD is a method of liquid atomization by electrical forces, an electrostatic atomizer sprays micro-drops from the solution injected into the capillary with electrostatic force generated by electric potential of about several tens kV. The organic solar cell based on a P3HT/PCBM active layer and a PEDOT:PSS electron blocking layer prepared from ESD method shows solar-to-electrical conversion efficiency of 1.42% at AM 1.5G 1sun light illumination, while 1.86% efficiency is observed when the ESD deposition of P3HT/PCBM is performed on a spin-coated PEDOT:PSS layer.
Keywords
Spray Coating; Electrostatic Spray Deposition; Air Pressure; Organic Photovoltaic; PEDOT:PSS;
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