Enhanced Luminescence of IEL Device With Carbon-Nanotube–Dielectric Composite Layer

This letter proposes a new method for reducing power consumption and enhancing the luminous efficiency of powder inorganic electroluminescence devices by introducing a composite dielectric layer into their structure. The composite dielectric layer contains a composite BaTiO₃-carbon nanotube (CNT) film, which is formed by adding single-wall CNTs into a BaTiO₃ layer. With an appropriate CNT mixing ratio, the power consumption decreased by more than 30%, and the luminous efficiency increased by approximately 50% at a brightness of 400 nits and an operation frequency of 1 kHz.