High-Mobility Hole-Transporting Polymers for Electroluminescence Applications

概要

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A series of electroluminescent and conductive phenyl ring-substituted poly(N-phenyl-N-styryl-1-naphthylamine) (P-XNPA, where $\text{X}=\text{-H}$ (P01), -OCH3 (P02) and -F (P03)) polymers were prepared. The polymers exhibit a high hole mobility, an excellent solubility and a good thermal stability. Their emission color, ionization potential (IP), quantum efficiency, glass transition temperature ($T_{\text{g}}$), efficiency and stability were all found to be related to the properties of the phenyl substituted side group. As an example, the hole mobility of poly(4-MeONPA) (P02) is $10^{-5}$ cm2V-1s-1 at room temperature, compared tothat of poly(N-vinylcarbazole) (PVK) being $10^{-7}$ cm2V-1s-1. P02 emits blue light at 450 nm and has a high thermal stability at an onset decomposition temperature above 420°C and $T_{\text{g}}$ of 132°C. A simple organic light-emitting diode (OLED) device fabricated from the same polymer has a maximum luminance of 588 cd/m2 at 175 mA/cm2.
Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
2005-01-15