ELECTRICAL AND OPTICAL-PROPERTIES OF LI-DOPED LIBO2 AND LINBO3 FILMS

Li-doped LiBO2 and LiNbO3 thin films have been studied and their optic al and electrical properties determined. With doping the ionic conduct ivity of the films was found to increase substantially. The highest co nductivity obtained with the doped films was about 4.5 x 10(-6) S cm-1 . All the films exhibited a high degree of transmission in the spectra l region from 350 to 2500 nm. The remarkable increase in the ionic con ductivity coupled to the preservation of a high optical transmission m akes this doping technique highly attractive for devising ion conducto rs that can be used in transmissive solid-state electrochromic systems or the so-called ''smart windows.''