A powder electroluminescent (EL) device is a flat light-emitting device producible only via printing process. The properties of the EL device can be improved by introducing a receptive layer into the paper substrate surface, although the underlying mechanisms of this enhancement remain unknown. Herein, this mechanism was investigated in terms of dielectric loss. The tan δ of the device prepared with the receptive layer was high compared to that obtained without the receptive layer. The slopes of the current and luminance steeply increased accompanying a decrease of tan δ. Therefore, this frequency property determines the frequency properties of the EL device.
Naoki Takeda, Shota Tsuneyasu, Toshifumi Satoh, "Effect of Introducing Receptive Layer to Paper Substrate in Powder Electroluminescent Device" in Proc. IS&T Printing for Fabrication: Int'l Conf. on Digital Printing Technologies (NIP35), 2019, pp 144 - 147, https://doi.org/10.2352/ISSN.2169-4451.2019.35.144