Ink-jet printed transparent electrode using nano-size indium tin oxide particles for organic photovoltaics
- Ink-jet printed transparent electrode using nano-size indium tin oxide particles for organic photovoltaics
- 정진아; 이진호; 김홍두; 김한기; 나석인
- ITO; Ink-jet-printing; Direct pattern; Transparency; Organic solarcell
- Issue Date
- Solar energy materials and solar cells
- VOL 94, NO 10, 1840-1844
- 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 °C, we were able to obtain directly patterned-ITO electrodes with an average transmittance of 84.14% and a sheet resistance of 202.7 Ω/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/㎠, 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.
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