Researchers develop Ir/IrOx electron transport layer for stable organicsolarcells NatureComms
O precursor was dissolved in 150 ml ethylene glycol under stirring and the value of pH was adjusted to 10 by adding 0.25 mol/L NaOH/glycol solution.After heating for 3 hours, the brown Ir/IrOFirstly, ITO-coated glass substrates were cleaned with distilled water, acetone, and isopropanol in an ultrasonic bath followed by ultraviolet-ozone treatment for 15 minutes. A solution of ZnO precursor was spin-coated onto the ITO surface at 3000 rpm and thermally annealed at 200°C for 30 minutes.
In the fabrication process of electron-only devices, the ZnO and Ir/IrOThe transmission electron microscope was applied to obtain the cross-sectional view patterns of the Ir/IrOfilm on ITO substrate. The samples for the cross-sectional TEM were prepared by the focused ion beam . The special aberration-corrected transmission electron microscope was performed on the 300 kV Thermo Fisher Spectra 300.
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