Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 94, Issue 10, Pages 1840-1844Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2010.05.052
Keywords
ITO; Ink-jet-printing; Direct pattern; Transparency; Organic solar cell
Funding
- Korea Ministry of Knowledge Economy [10033574]
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We have demonstrated ink-jet printed indium tin oxide (ITO) electrode for cost-efficient organic solar cells (OSCs). By ink-jetting of crystalline ITO nano-particles and performing a rapid thermal anneal at 450 degrees C, we were able to obtain directly patterned-ITO electrodes with an average transmittance of 84.14% and a sheet resistance of 202.7 Omega/square without using a conventional photolithography process. The OSCs fabricated on the directly patterned ITO electrodes by ink-jet printing showed an open circuit voltage of 0.57 V. short circuit current of 8.47 mA/cm(2), fill factor of 44%, and power conversion efficiency of 2.13%. This indicates that the ITO directly patterned by ink-jet printing is a viable alternative to sputter-grown ITO electrodes for cost-efficient printing of OSCs due to the absence of a photolithography process for patterning and more efficient ITO material usage. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
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