Characteristics of dielectric barrier discharge with different dielectric layer structures

Abstract

A dielectric barrier discharge device with two glass dielectric layers, one of which is covered with an indium tin oxide (ITO) conductive layer, was designed. Its discharge characteristics was studied and compared with that in dielectric barrier discharge devices with two glass dielectric layers and single glass layer. The charge transport in two dimensions, zero dimension, and three dimensions were realized by the above three devices respectively. Single steady filament is obtained in the two devices with two glass layers. Different from the single filament obtained in the device with two glass dielectric layers without ITO conductive layer, the single filament obtained by using the device of two glass dielectric layers with ITO conductive layer in one side was "T" shapes, its halo was twice as much as that of the former, its current was greater, and the phenomenon of discharge interval changing alternatively between long and short was more evident. Moreover, the discharge intensity also varied alternatively between strong and weak. The analysis indicated that the differences of the wall charge transport and secondary electron emission between different dielectric structures lead to different discharge characteristics.