Inkjet printing of transparent InZnSnO conducting electrodes from nano-particle ink for printable organic photovoltaics

Title
Inkjet printing of transparent InZnSnO conducting electrodes from nano-particle ink for printable organic photovoltaics
Authors
김지훈나석인김한기
Keywords
Organic solarcells; Inkjet-printed IZTO; Nanoparticle; Electrode; Nanoink
Issue Date
2012-03
Publisher
Solar energy materials and solar cells
Citation
VOL 98, 424-432
Abstract
We have demonstrated inkjet-printed indium–zinc–tin-oxide (IZTO) electrodes using IZTO nanoparticle ink for printable organic solar cells (OSCs). By inkjetting of nanosize IZTO particles and rapid thermal annealing (RTA) of the inkjet-printed IZTO films, we were able to obtain directly patterned IZTO transparentconductingelectrodes with a sheet resistance of 20.6 Ω/square and an average transmittance of 81.29% without using a conventional photolithography process. Because the inkjet-printed IZTO electrodes were prepared by overlapping the ink-droplets ejected from the nozzle, the mechanism of IZTO nanoink deposition on the surface was investigated. This mechanism defines an optimal ink-droplet pitch to achieve a uniform printing of IZTO lines from the ink-droplets. Despite the low sheet resistance and high transmittance, the OSC fabricated on the inkjet-printed IZTO electrode shows open circuit voltage of 0.45 V, short circuit current of 5.74 mA/cm2, fill factor of 31.22%, and power conversion efficiency of 0.81% due to porous microstructure of the sintered IZTO nanoparticles. This indicates that the direct patterning of IZTO film by inkjetprinting is a promising printable transparentelectrode for printable OSCs.
URI
http://pubs.kist.re.kr/handle/201004/42028
ISSN
09270248
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KIST Publication > Article
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