How to determine parameters of soft mode from dielectric spectroscopy performed using cells with ITO electrodes?

• Autorzy: Perkowski P.
• Języki publikacji: EN

Abstrakty

EN

Indium tin oxide (ITO) electrodes are widely used for liquid crystal applications as well as for measuring cells. Unfortunately, ITO layer possesses its own non zero resistivity R, which produces (with the cell capacity C₀) the cut-off frequency f₀ of RC₀ circuit. From this reason, dielectric spectroscopy for high frequencies cannot be performed directly. The limits of classical method of extracting high frequency losses are shortly discussed. The new method of extracting high frequency losses is used for the first time for the experimental data. The new method can also evaluate the shrinkage of measuring cell gap after filling with liquid crystal.

Słowa kluczowe

EN

ITO; electric permittivity; soft mode; liquid crystal; dielectric spectroscopy

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2011
• Tom: Vol. 19, No. 1
• Strony: 76--82
• Opis fizyczny: Bibliogr. 11 poz., wykr.

Twórcy

autor

Perkowski P.

• Institute of Applied Physics, Military University of Technology, 2 Kaliskiego Str., 00-908 Warsaw, Poland,

Bibliografia

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