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Preparation and characterization of ITO, NPB and Alq3 thin films on transparent clay substrate for flexible OLED applications

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5 Author(s)
Venkatachalam, S. ; Res. Center for Compact Chem. Process, Adv. Inst. of Ind. Sci. & Technol. (AIST), Sendai, Japan ; Hayashi, H. ; Ebina, T. ; Nakamura, T.
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Transparent flexible freestanding polymer doped clay (TPP-LiSA) films were prepared. The DTA curve of polymer doped clay showed an exothermic peak at the range of 260-315°C. Nanocrystalline ITO thin films were prepared on flexible clay substrate by ion beam sputtering method. The average optical transparency of ITO/clay is estimated as 70 %. NPB and Alq3 thin films were prepared on ITO/clay by vacuum evaporation method. The PL spectra of NPB and Alq3 thin films showed emission peaks at 435 and 540 nm, respectively. The J-V characteristics of Ag/NPB/ITO/Clay and Ag/Alq3/ITO/Clay showed the Ohmic behaviour. The J-V characteristic of Ag/Alq3/NPB/ITO/Clay showed nonlinear Schottky behaviour.

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Active-Matrix Flatpanel Displays and Devices (AM-FPD), 2012 19th International Workshop on

Date of Conference:

4-6 July 2012