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

• Published in: Semiconductor Physics Quantum Electronics & Optoelectronics
• Date: 2011
• Main Author: Kovalchuk, O.V.
• Format: Article
• Language: English
• Published: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2011
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/117748
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Method and estimation of parameters of dense part of double electrical layer at the interface electrode-solution of the dye in liquid crystal / O.V. Kovalchuk // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2011. — Т. 14, № 3. — С. 321-324. — Бібліогр.: 11 назв. — англ.

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