Precursor compositions for the deposition of passive electronic features
a technology of electronic features and compositions, applied in the field of precursor compositions, can solve the problems of limited use of ptf for capacitors, inability to meet the demands of resistor applications, and limitations of traditional hybrid technologies, and achieve enhanced resolution control, good electrical characteristics, and high viscosity pastes
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example 1
Lead Zirconate Titanate (PZT)
[0368] The following precursors are mixed in the following ratios in toluene to form a solution: 23.8 wt. % Ti dimethoxy dineodecanoate; 21.4 wt. % Zr butoxide; and 54.8 wt. % Pb ethylhexanoate. The PZT precursor mixture decomposes at 450° C. as evidenced by TGA. Formation of crystalline PZT does not occur until processing at 500° C. for at least 30 minutes and preferably 90 minutes or more.
example 2
[0369] Precursors are mixed in the following ratios: 49.8 wt. % Ti isopropoxide triethylamine; 18.2 wt. % Zr ethylhexanoate; 5.9 wt. % Zr propoxide; and 26.1 wt. % Sn ethylhexanoate. The mixture was heated and found to decompose by 550° C. as evidenced by TGA. The crystallinity of the ZST is improved by post processing at greater than 500° C. for 60 minutes.
Example 3
[0370] Precursors are mixed in the following ratios: 50.9 wt. % Ti dimethoxy dineodecanoate; 19.3 wt. % Zr propoxide; 27.2 wt. % Sn ethylhexanoate; and 2.6 wt. % Zr ethylhexanoate. The composition was found to decompose by 550° C. as evidenced by TGA. The crystallinity of the ZST is improved by post processing at greater than 500° C. for 60 minutes.
example 3
Pb2Ta2O7
[0371] Precursors are mixed in the following ratios: 45.1 wt. % Ta ethoxide; 54.9 wt. % Pb ethylhexanoate; and dodecane as needed for solubility. The lead tantalate precursor decomposes by 450° C. as evidenced by TGA. Formation of crystalline Pb2Ta2O7 occurs by processing at 550° C. for one hour.
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