Enhancement of inorganic electroluminescence by chlorine-functionalized  CNTs

So-Yeon Jun; SeGi Yu

doi:10.1117/12.2510207

1 March 2019 Enhancement of inorganic electroluminescence by chlorine-functionalized CNTs

So-Yeon Jun, SeGi Yu

Proceedings Volume 10942, Advances in Display Technologies IX; 1094215 (2019) https://doi.org/10.1117/12.2510207
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

We have investigated AC inorganic electroluminescence devices, where chlorine-functionalized carbon nanotubes (Cl- CNTs) were incorporated in the dielectric layer. At the concentration of 0.01 wt% of Cl-CNTs, roughly 50% increment in the luminance was observed, while maintaining a 30% reduction in the current density. It was further supported by the separate measurement of dielectric performance of the dielectric layers only, yielding to high dielectric constant and reasonably low dielectric loss for Cl-CNT incorporated layers. The enhancement in the dielectric constant is attributed to the micro-capacitor effect by space charge polarization at the interface between the phosphor layer and the dielectric layer. High polarization of C-Cl bonds within the dielectric layer is considered to promote the space charge polarization. To control the concentration of Cl-CNTs low is important in order not to cause percolation behavior of crisscrossing CNTs, which easily leaded to leakage current paths within the dielectric layer.

Citation Download Citation

So-Yeon Jun and SeGi Yu "Enhancement of inorganic electroluminescence by chlorine-functionalized CNTs", Proc. SPIE 10942, Advances in Display Technologies IX, 1094215 (1 March 2019); https://doi.org/10.1117/12.2510207

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