Method and estimation of parameters of dense part of double electrical layer at the interface electrode-solution of the dye in liquid crystal

摘要

First estimated were the parameters of dense part of double electrical layerud(DEL) at the interface electrode – solution of the dye in liquid crystal, based on analysisudof capacitance-voltage characteristics obtained at low frequencies, taking the seriesudresistance into account. DELs with various parameters near each electrode were obtainedudowing to their different chemical compositions. It was shown that the obtained differenceudin the DEL parameters is caused not only by different chemical composition of theudelectrodes, but also different orientations of molecules near each of them (planarudorientation near one electrode and homeotropic one near another). It was estimated theudbarrier height, thickness of near-electrode layer, and concentration of ionized states in theuddense parts of DEL near each electrode. It was shown that these parameters differ by 2 toud3 times, and an assumption was made about the reasons that can cause this difference.